CN219911268U - Energy-saving device for adjusting pre-rotation flow at inlet of centrifugal pump - Google Patents
Energy-saving device for adjusting pre-rotation flow at inlet of centrifugal pump Download PDFInfo
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- CN219911268U CN219911268U CN202320913531.4U CN202320913531U CN219911268U CN 219911268 U CN219911268 U CN 219911268U CN 202320913531 U CN202320913531 U CN 202320913531U CN 219911268 U CN219911268 U CN 219911268U
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- guide vane
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- centrifugal pump
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 17
- 238000009987 spinning Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 14
- 229920000459 Nitrile rubber Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model relates to an energy-saving device for adjusting pre-spinning flow at an inlet of a centrifugal pump, which is arranged at an inlet flange of the centrifugal pump and comprises: the adjustable guide vanes are arranged on the flange plate at the inlet flange, and the adjustable guide vanes are rotatably arranged on the flange plate; the adjustable guide vane comprises a guide vane blade and a guide vane handle, wherein the guide vane handle is fixed with the flange, and the guide vane blade is all positioned in the flange and the pump inlet. The utility model can be used as a universal piece to be arranged at the pump inlet, and the pre-selected inflow is regulated by regulating the deflection angle of the guide vane, so that the high-efficiency point of the centrifugal pump is regulated to replace a valve to regulate the operation condition. Meanwhile, the guide vane blade is positioned at one side of the adjusting handle and integrally stretches into the pump inlet so as to avoid interference to an external pipeline and a system.
Description
Technical Field
The utility model relates to an energy-saving device, in particular to an energy-saving device for adjusting the pre-spinning inflow of a centrifugal pump inlet by adjusting the angle of a guide vane at the centrifugal pump inlet so as to adjust the high-efficiency interval and the high-efficiency point of the centrifugal pump under different working conditions.
Background
When the centrifugal pump is actually operated, the centrifugal pump is unlikely to operate under the working condition point of the highest efficiency point, and usually can operate at the high flow or low flow point, so that the problem of operation condition adjustment exists, and therefore, the high efficiency point of the centrifugal pump and the high efficiency interval for operation of the centrifugal pump are required to be adjusted through a plurality of methods in the actual operation, so that the efficiency of the centrifugal pump is reduced slightly compared with the original high efficiency point, even if the centrifugal pump is operated under the off-set working condition, the efficiency is not reduced suddenly, or the high efficiency point of the centrifugal pump is close to the working point under the off-set working condition as much as possible.
At present, the adjustment mode for adjusting the operation condition of the centrifugal pump is basically realized by adjusting the opening degree of a valve. But the disadvantage of valve adjustment is that the hydraulic loss of the pump is greatly increased by adjusting the opening of the valve, the influence on the pump efficiency is large, the energy saving of the centrifugal pump is not facilitated, the valve adjustment precision is low, and the actual required working point cannot be effectively adjusted.
Disclosure of Invention
In view of the above problems, a main object of the present utility model is to provide an energy-saving device for adjusting the inflow of the centrifugal pump inlet by adjusting the angle of the guide vane at the centrifugal pump inlet, so as to adjust the high efficiency interval and the high efficiency point of the centrifugal pump under different working conditions.
The utility model solves the technical problems by the following scheme: an energy saving device for adjusting pre-spun flow at an inlet of a centrifugal pump, the energy saving device for adjusting pre-spun flow at an inlet flange of the centrifugal pump, the energy saving device for adjusting pre-spun flow at an inlet of the centrifugal pump comprising: the adjustable guide vanes are arranged on the flange plate at the inlet flange, and the adjustable guide vanes are rotatably arranged on the flange plate; the adjustable guide vane comprises a guide vane blade and a guide vane handle, wherein the guide vane handle is fixed with the flange, and the guide vane blade is all positioned in the flange and the pump inlet.
In a specific embodiment of the present utility model, the energy saving device for adjusting the pre-rotation flow at the inlet of the centrifugal pump further comprises: the guide vane rotating angle dial plate, the fastening bolt, the guide vane handle sealing ring and the guide vane handle disc; the flange piece is provided with a hole, a guide vane handle of the adjustable guide vane is penetrated out from the inside of the flange piece, the top end of the guide vane handle of the guide vane is provided with threads, the adjustable guide vane is fixed with the flange piece through a fastening nut, a guide vane handle sealing ring for preventing leakage is arranged between the guide vane handle and the flange piece, the connection position of the guide vane blade and the guide vane handle is a guide vane handle disc, the rotation angle of the adjustable guide vane is displayed on a guide vane rotation angle dial plate, and the guide vane rotation angle dial plate is clamped on the guide vane handle.
In the concrete implementation example of the utility model, a groove is processed on the guide vane handle, the groove is used for arranging a guide vane handle sealing ring, the lower end of the guide vane handle is matched with the flange piece through hole, the upper end of the guide vane handle is slightly thinner than the lower end, the top end of the guide vane is a flat shaft structure hole, and the central line of the flat shaft structure hole is parallel to the central line of the guide vane handle.
In the concrete implementation example of the utility model, the upper end surface of the guide vane handle disc is positioned with the spigot of the flange piece through hole, and the connection part of the lower end surface of the guide vane handle disc and the guide vane blade adopts a circular arc connection mode.
In a specific embodiment of the utility model, the vane shank seal ring is a nitrile rubber seal ring.
In the concrete implementation example of the utility model, the whole guide vane rotating dial plate is of an L-shaped structure, and a U-shaped groove is processed on the upper end surface and matched with a flat shaft structure hole of the guide vane handle; the guide vane rotating angle dial plate is provided with a scribing line.
In a specific embodiment of the utility model, the flange plate is connected with the flange of the single-stage single-suction centrifugal pump through connecting bolts.
In a specific embodiment of the utility model, the adjustable vane blades extend in the direction of the pump inlet and into the pump inlet.
In a specific embodiment of the present utility model, the adjustable guide vane is a straight guide vane.
In a specific embodiment of the present utility model, the vane blade and the vane shank are integrally formed.
The utility model has the positive progress effects that: the energy-saving device for adjusting the pre-rotation inflow of the centrifugal pump inlet can be installed at the pump inlet as a general part, and the pre-rotation inflow is adjusted in a mode of adjusting the deflection angle of the guide vane, so that the high-efficiency point of the centrifugal pump is adjusted to replace a valve to adjust the operation working condition. Meanwhile, the guide vane blade is positioned at one side of the adjusting handle and integrally stretches into the pump inlet so as to avoid interference to an external pipeline and a system.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a partial enlarged view of fig. 1.
FIG. 3-1 is a schematic illustration of the structure of an adjustable vane of the present utility model.
Fig. 3-2 is a left side view of fig. 3-1.
Fig. 3-3 is a top view of fig. 3-1.
Fig. 4-1 is a schematic structural view of a vane rotation angle dial plate in the present utility model.
Fig. 4-2 is a left side view of fig. 4-1.
Fig. 4-3 is a top view of fig. 4-1.
The following are names corresponding to the reference numerals in the present utility model:
the guide vane rotary angle gauge comprises a flange piece 1, a guide vane handle sealing ring 2, a guide vane handle disc 3, an adjustable guide vane 4, a fastening nut 5, a guide vane rotary angle gauge plate 6, a single-stage single-suction centrifugal pump 7 and a connecting bolt 8; a guide vane 401, a guide vane handle 402, a groove 403 and a flat shaft structure hole 404.
Detailed Description
The following description of the preferred embodiments of the present utility model is given with reference to the accompanying drawings, so as to explain the technical scheme of the present utility model in detail.
Fig. 1 is a schematic overall structure of the present utility model, and fig. 2 is a partial enlarged view of fig. 1, as shown in fig. 1-2: the utility model provides an energy-saving device for adjusting pre-spinning inflow at an inlet of a centrifugal pump, which is arranged at an inlet flange of the centrifugal pump and comprises: the adjustable guide vanes 4 are arranged on the flange sheet 1 at the inlet flange, and the adjustable guide vanes 4 are rotatably arranged on the flange sheet; the adjustable guide vane 4 comprises a guide vane blade 401 and a guide vane handle 402, the guide vane handle 402 is fixed with the flange sheet 1, the guide vane blade 401 is all positioned in the flange sheet 1 and the pump inlet, and the adjustable guide vane 4 is a straight guide vane and is integrally formed with the guide vane handle.
The energy saving device for adjusting the pre-rotation flow at the inlet of the centrifugal pump further comprises: the guide vane rotating angle dial plate 6, the fastening bolt 5, the guide vane handle sealing ring 2 and the guide vane handle disc 3 are provided with holes on the flange sheet 1, the guide vane handle of the adjustable guide vane 4 is penetrated out from the flange sheet 1, threads are processed at the top end of the guide vane handle of the guide vane, the adjustable guide vane 4 and the flange sheet 1 are fixed through the fastening nut 5, the guide vane handle sealing ring 2 for preventing leakage is arranged between the guide vane handle 402 and the flange sheet 1, the connecting position of the guide vane blade 401 and the guide vane handle 402 is the guide vane handle disc 3, the rotating angle of the adjustable guide vane 4 is displayed on the guide vane rotating angle dial plate 6, and the guide vane rotating angle dial plate 6 is clamped on the guide vane handle 402.
Fig. 3-1 is a schematic structural view of an adjustable vane according to the present utility model, fig. 3-2 is a left side view of fig. 3-1, and fig. 3-3 is a top view of fig. 3-1. The adjustable guide vane 4 comprises a guide vane blade 401 and a guide vane handle 402, a groove 403 is formed on the guide vane handle 402, the groove 403 is used for arranging a guide vane handle sealing ring 2, and the guide vane handle part is wholly positioned in a flange blade hole, and the length is related to the radial dimension of the flange blade. The lower end of the guide vane handle 402 is matched with the through hole of the flange plate 1, and the upper end of the guide vane handle 402 is slightly thinner than the lower end, so that friction between the guide vane handle and the flange plate is reduced. The top end of the guide vane is a flat shaft structure hole 404, and the central line of the flat shaft structure hole 404 is parallel to the central line of the guide vane handle 402, so that the guide vane angle can be conveniently adjusted. Under the condition that the process and the structural strength are possible, the thinner the thickness is, the better the thickness is, the guide vane blade is thickened with equal thickness, the thickness is generally processed into four millimeters, the displacement between the guide vanes can be effectively reduced, and meanwhile, the sufficient diversion capacity and the energy conversion capacity are maintained.
The upper end face of the guide vane handle disc 3 is positioned with the spigot of the flange piece through hole, the joint of the lower end face of the guide vane handle disc 3 and the guide vane blade 401 adopts a circular arc connection mode, the strength of the root of the blade is ensured, and the guide vane handle sealing ring 2 is a nitrile rubber sealing ring.
Fig. 4-1 is a schematic view of a vane rotation angle dial plate according to the present utility model, fig. 4-2 is a left side view of fig. 4-1, and fig. 4-3 is a top view of fig. 4-1, as shown in the above-mentioned figures: the whole guide vane rotating dial plate is of an L-shaped structure, and a U-shaped groove is machined on the upper end surface and matched with a flat shaft structure hole 404 of the guide vane handle; the guide vane rotating angle dial plate is provided with a scribing line, the scribing line coincides with the center line of the guide vane, and the angle is measured by an angle measuring instrument after rotating.
In a specific implementation process, the flange plate 1 is connected with a flange of the single-stage single-suction centrifugal pump 7 through a connecting bolt 8. The blades of the adjustable guide vane 4 extend towards the direction of the pump inlet and extend into the pump inlet.
The guide vane rotating angle dial plate is clamped on the flat shaft of the guide vane handle. Scribing on a guide vane rotating angle dial plate, measuring the angle of the scribing and the axial center line of the inlet through an angle measuring instrument after rotating the angle, and knowing the rotating angle.
Vertical lines are carved on the handle of the guide vane, angle scale marks are carved on the dial plate 6, when the installation direction of the guide vane 4 is parallel to the axial center line of the inlet, the vertical lines of the handle of the guide vane are aligned with the 0-degree scale marks on the dial plate 6, and when the guide vane rotates, the corresponding angle scale marks on the handle scale lines and the dial plate 6 are the guide vane rotating angle.
In the running process of the centrifugal pump, the guide vane 4 is firstly installed to be parallel to the axial direction, then the angle is adjusted according to the actual required working condition, and the high-efficiency interval of the pump is adjusted to the actual running working condition point.
After the device is additionally arranged on the centrifugal pump, no influence is caused on the structure of the centrifugal pump.
According to the utility model, the pre-selected inflow is regulated by additionally arranging the regulating device and regulating the deflection angle of the guide vane, so that the high-efficiency point of the centrifugal pump is regulated to replace a valve to regulate the operation condition.
Meanwhile, the guide vane blade is positioned at one side of the adjusting handle and integrally stretches into the pump inlet so as to avoid interference to an external pipeline and a system.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, which have been described in the foregoing embodiments and description merely illustrates the principles of the utility model, and that various changes and modifications may be effected therein without departing from the spirit and scope of the utility model as defined in the appended claims and their equivalents.
Claims (10)
1. An energy saving device for regulating pre-rotation flow at an inlet of a centrifugal pump, characterized in that: the energy-saving device for adjusting the pre-spinning flow at the inlet of the centrifugal pump is arranged at the inlet flange of the centrifugal pump, and the energy-saving device for adjusting the pre-spinning flow at the inlet of the centrifugal pump comprises: the adjustable guide vanes are arranged on the flange plate at the inlet flange, and the adjustable guide vanes are rotatably arranged on the flange plate; the adjustable guide vane comprises a guide vane blade and a guide vane handle, wherein the guide vane handle is fixed with the flange, and the guide vane blade is all positioned in the flange and the pump inlet.
2. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 1, characterized in that: the energy saving device for adjusting pre-rotation flow at the inlet of a centrifugal pump further comprises: the guide vane rotating angle dial plate, the fastening bolt, the guide vane handle sealing ring and the guide vane handle disc; the flange piece is provided with a hole, a guide vane handle of the adjustable guide vane is penetrated out from the inside of the flange piece, the top end of the guide vane handle of the guide vane is provided with threads, the adjustable guide vane is fixed with the flange piece through a fastening nut, a guide vane handle sealing ring for preventing leakage is arranged between the guide vane handle and the flange piece, the connection position of the guide vane blade and the guide vane handle is a guide vane handle disc, the rotation angle of the adjustable guide vane is displayed on a guide vane rotation angle dial plate, and the guide vane rotation angle dial plate is clamped on the guide vane handle.
3. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 2, characterized in that: the guide vane handle is provided with a groove, the groove is used for arranging a guide vane handle sealing ring, the lower end of the guide vane handle is matched with the flange piece through hole, the upper end of the guide vane handle is slightly thinner than the lower end of the guide vane handle, the top end of the guide vane is provided with a flat shaft structure hole, and the central line of the flat shaft structure hole is parallel to the central line of the guide vane handle.
4. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 2, characterized in that: the upper end surface of the guide vane handle disc is positioned with the spigot of the flange piece through hole, and the joint of the lower end surface of the guide vane handle disc and the guide vane blade adopts an arc connection mode.
5. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 2, characterized in that: the guide vane handle sealing ring is a nitrile rubber sealing ring.
6. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 3, characterized in that: the whole guide vane rotating dial plate is of an L-shaped structure, and a U-shaped groove is machined on the upper end surface and matched with a flat shaft structure hole of the guide vane handle; the guide vane rotating angle dial plate is provided with a scribing line.
7. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 1, characterized in that: the flange plate is connected with a flange of the single-stage single-suction centrifugal pump through a connecting bolt.
8. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 1, characterized in that: the adjustable guide vane blade extends towards the direction of the pump inlet and extends into the pump inlet.
9. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 1, characterized in that: the adjustable guide vane is a straight guide vane.
10. An energy saving device for regulating pre-rotation flow at the inlet of a centrifugal pump according to claim 1, characterized in that: the guide vane blade and the guide vane handle are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320913531.4U CN219911268U (en) | 2023-04-21 | 2023-04-21 | Energy-saving device for adjusting pre-rotation flow at inlet of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320913531.4U CN219911268U (en) | 2023-04-21 | 2023-04-21 | Energy-saving device for adjusting pre-rotation flow at inlet of centrifugal pump |
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| Publication Number | Publication Date |
|---|---|
| CN219911268U true CN219911268U (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320913531.4U Active CN219911268U (en) | 2023-04-21 | 2023-04-21 | Energy-saving device for adjusting pre-rotation flow at inlet of centrifugal pump |
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| CN (1) | CN219911268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883097A (en) * | 2021-06-23 | 2022-01-04 | 上海凯泉泵业（集团）有限公司 | Centrifugal pump adjustable preposed guide vane device capable of widening high-efficiency area |
-
2023
- 2023-04-21 CN CN202320913531.4U patent/CN219911268U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113883097A (en) * | 2021-06-23 | 2022-01-04 | 上海凯泉泵业（集团）有限公司 | Centrifugal pump adjustable preposed guide vane device capable of widening high-efficiency area |
| CN113883097B (en) * | 2021-06-23 | 2024-05-17 | 上海凯泉泵业（集团）有限公司 | Adjustable front guide vane device of centrifugal pump capable of widening high-efficiency area |
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