CN106704255B - Centrifugal pump, the impeller for being convenient for measuring centrifugal blade pressure fluctuation - Google Patents
Centrifugal pump, the impeller for being convenient for measuring centrifugal blade pressure fluctuation Download PDFInfo
- Publication number
- CN106704255B CN106704255B CN201710069632.7A CN201710069632A CN106704255B CN 106704255 B CN106704255 B CN 106704255B CN 201710069632 A CN201710069632 A CN 201710069632A CN 106704255 B CN106704255 B CN 106704255B
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- Prior art keywords
- impeller
- blade
- partition
- centrifugal
- pump
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/185—Rotors consisting of a plurality of wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to centrifugal blade field of pressure measurement, disclose a kind of impeller and centrifugal pump for being convenient for measuring centrifugal blade pressure fluctuation.Impeller includes partition, end cap and multiple blades；Multiple blades are folded between partition and end cap, and multiple blades are structure as a whole with partition, and end cap is detachably connected with blade；Adjacent blade forms runner, is formed on the opposite face of two blades of runner and is equipped with the groove for placing sensor and the wire casing for placing lead；Partition is equipped with the threading hole being connected to wire casing.The centrifugal pump of impeller provided by the invention and the application impeller, while realizing measurement blade surface pressure fluctuation, the wiring problem of sensor and lead is also solved, the influence of sensor and lead stream field is reduced to minimum, ensure that the measurement accuracy of fluctuation pressure.
Description
Technical field
The present invention relates to centrifugal blade field of pressure measurement, are convenient for measuring centrifugal pump more particularly to centrifugal pump and one kind
The impeller of blade pressure pulsation.
Background technique
Centrifugal pump is often generated along with pressure fluctuation in the process of running, and the pressure fluctuation near blade exit
One of an important factor for frequency content is complex, and amplitude of pulsing is big, is influence impeller stable operation.Therefore, in the survey of pump
The examination stage carries out stability analysis to impeller pressure fluctuation and is very important.
In the prior art, blade can only be just able to achieve on the bigbore single-suction centrifugal pump of higher specific speed and large-scale water turbine
On pressure fluctuation measurement.For double suction centrifugal pump, since its blade passage is relatively narrow, blade construction bending, complexity, no
Measuring point and signal transmission route can be arranged on impeller well, so that non-to the pressure fluctuation measurement on double-suction centrifugal pump pump blade
It is often difficult.
Summary of the invention
(1) technical problems to be solved
The object of the present invention is to provide a kind of impellers for being convenient for measuring centrifugal blade pressure fluctuation, and apply the impeller
Centrifugal pump, to overcome the prior art that cannot easily measure the defect of the pressure fluctuation on centrifugal blade.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of impeller for being convenient for measuring centrifugal blade pressure fluctuation,
Including partition, end cap and multiple blades；Multiple blades are folded between the partition and the end cap, and multiple leaves
Piece is structure as a whole with the partition, and the end cap is detachably connected with the blade；The adjacent blade forms runner, shape
Groove for placing sensor is equipped on opposite face at two blades of the runner and for placing lead
Wire casing；The partition is equipped with the threading hole being connected to the wire casing.
Wherein, locating part is additionally provided in the groove and the wire casing.
Wherein, the end cap and the blade pass through rivet interlacement.
Wherein, the groove on the single runner is 8.
The present invention also provides a kind of centrifugal pump, including the first impeller and the second impeller, first impeller is above-mentioned convenience
Measure the impeller of centrifugal blade pressure fluctuation；
Second impeller includes second partition, second end cover and is connected between the second partition and second end cover
Multiple blades, second impeller are structure as a whole.
It wherein, further include the first pump shaft, first impeller and second impeller are set on first pump shaft,
The partition of first impeller is opposite with the second partition；The pump shaft is equipped with axis hole, and the side wall of the pump shaft is equipped with
The radial hole being connected to the axis hole.
The present invention also provides another centrifugal pumps, including the above-mentioned impeller for being convenient for measuring centrifugal blade pressure fluctuation.
It wherein, further include the second pump shaft, the impeller is set on second pump shaft, and second pump shaft is equipped with axis
Hole, the side wall of second pump shaft are equipped with the radial hole being connected to the axis hole.
(3) beneficial effect
The centrifugal pump of the impeller provided by the invention for being convenient for measuring centrifugal blade pressure fluctuation and the application impeller, leads to
It crosses and double shrouded wheel is produced as split type structure, and open up the groove for placing sensor and the wire casing for placing lead on blade,
Embedding sensor simultaneously ensure that the molded line of blade does not change simultaneously.Realizing the same of measurement blade surface pressure fluctuation
When, the wiring problem of sensor and lead is also solved, the influence of sensor and lead stream field is reduced to minimum.Partition
It is upper that the threading hole that is connected to wire casing is set, sensor lead can be led to pump shaft from impeller blade position, lead is from pump spindle center
It passes through, sensor and lead has not only been prevented to be detached from impeller in impeller rotary course, but also regular route, reduce to fluid
Interference.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of centrifugal pump impeller in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram in the embodiment of the present invention after centrifugal pump assembly；
Fig. 3 is the structural schematic diagram of impeller blade in the embodiment of the present invention；
Fig. 4 is the structural schematic diagram of pump shaft in the embodiment of the present invention；
Fig. 5 is the cross-sectional view in the embodiment of the present invention after centrifugal pump assembly；
In figure, 1, first end cover；2, vane plate；3, the second impeller；4, key；5, rivet；6, pump shaft；201, first partition；
202, there is slot blade；203, groove；204, wire casing；205, threading hole；301, second partition；302, slotless blade；303, second
End cap；601, radial blind holes；602, axis hole；603, radial through-hole.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Following instance
For illustrating the present invention, but it is not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in inventive embodiments.
Fig. 1 is the structural schematic diagram of centrifugal pump impeller in the embodiment of the present invention；Fig. 2 is centrifugal pump dress in the embodiment of the present invention
Structural schematic diagram after matching；Fig. 2 is the structural schematic diagram of impeller blade in the embodiment of the present invention；Fig. 4 is in the embodiment of the present invention
The structural schematic diagram of pump shaft；Fig. 5 is the cross-sectional view in the embodiment of the present invention after centrifugal pump assembly.
As shown in Figure 1 to Figure 3, the impeller for being convenient for measuring centrifugal blade pressure fluctuation provided in the embodiment of the present invention is only
Refer to the right side position in Fig. 1 and Fig. 2, overall structure can be described in the embodiment below, structure and Fig. 1 in the present embodiment
It is identical with the part-structure in Fig. 2, so being described using the same figure.Impeller provided in this embodiment includes first partition
201, first end cover 1 and multiple blades.Blade is in streamlined design, as shown in figure 1 the structure of vane plate 2, and multiple blades are around partition
Center rotates fixed and arranged on partition, and blade is structure as a whole with partition, is processed by modes such as block casts.Partition center
Position, which is recessed downwards, forms the hole with arcwall face, impeller can be set on wheel shaft by this hole, impeller and axis are logical
It is fixed to cross key 4, the blade wheel structure after installation is as shown in Figure 2.Blade is clipped between partition and end cap 1, and end cap 1 and blade are removable
Connection is unloaded, such as end cap 1 is riveted with blade by rivet 5.Some rivetings are uniformly arranged at the position that end cap 1 is bonded with blade to use
Hole, the hole of some rivetings is arranged in corresponding position on blade top surface, squeezes into after the hole on blade is aligned with the hole on end cap 1
Rivet 5 realizes the relatively fixed of the two.Adjacent blade and first end cover 1, partition is formed together runner, the runner of formation
The groove 203 for placing sensor, and the wire casing 204 for placing lead are equipped on the opposite face of that two blades,
The structure for having slot blade 202 with fluted 203 and wire casing 204 is as shown in Figure 3.Experiment shows to place 8 sensors, runner
Each 4 of side, and be evenly arranged, the fluctuation pressure of blade surface can be more fully measured, while it is excessive to be unlikely to addition
Lead and sensor, guarantee measurement accurately under the premise of, also save cost.Partition is equipped with and wears with what wire casing 204 was connected to
The position of string holes 205, threading hole 205 is as shown in Figure 5.When needing to place sensor, first first end cover 1 is removed, in groove 203
Middle merging sensor, the line connecting with sensor are placed in wire casing 204, are extended on partition with the trend of wire casing 204
Threading hole 205 in, be then pierced by from threading hole 205, in this way in measurement process, sensor and lead are equivalent to and are embedded in
In impeller, fluid flow fields will not be influenced because of the reason of sensor and conducting wire, and then avoid the influence to measurement result.
Wherein, it is additionally provided with locating part in the position of groove 203 and wire casing 204, for fixing sensor and lead.Such as
Locating part can be rubber product, after being put into sensor and lead, gap showed with rubber product fill it is smooth so that blade surface
It is more smooth, and then the fairing ace of blade is not influenced.Alternatively, locating part can be the packing material of shaping, such as fill
The glue stick etc. that can be combined closely afterwards with blade.By the way that locating part is arranged, it ensure that the fairing ace of blade is indeformable, simultaneously also
Prevent the disengaging of sensor and lead in rotary course.
The centrifugal pump of the impeller provided by the invention for being convenient for measuring centrifugal blade pressure fluctuation and the application impeller, leads to
It crosses and double shrouded wheel is produced as split type structure, and open up the groove 203 for placing sensor and the line for placing lead on blade
Slot 204, embedding sensor simultaneously ensure that the molded line of blade does not change simultaneously.Realizing measurement blade surface pressure fluctuation
While, the wiring problem of sensor and lead is also solved, the influence of sensor and lead stream field is reduced to minimum.
The threading hole 205 being connected to wire casing 204 is set on partition, sensor lead can be led to pump shaft 6, lead from impeller blade position
It is passed through from 6 center of pump shaft, sensor and lead has not only been prevented to be detached from impeller in impeller rotary course, but also regular route, subtracted
The small interference to fluid.
By installing pressure sensor on the impeller blade, the fluctuation pressure on blade surface can be easily measured.Energy
The impeller for being convenient for measuring blade fluctuation pressure can be applied on single-suction centrifugal pump, be also applicable on double suction centrifugal pump.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, brief for description, during the description of the present embodiment, no longer
Technical characteristic same as Example 1 is described, only illustrates the present embodiment difference from Example 1:
The centrifugal pump provided in the present embodiment, blade fluctuation pressure can be convenient for measuring by applying described in embodiment 1
Impeller.
Centrifugal pump provided in this embodiment is a kind of double suction centrifugal pump, including the impeller recorded in embodiment 1, i.e. in Fig. 1
Shown in right half part impeller, referred to as the first impeller, further include left-half impeller as shown in Figure 1, referred to as the second impeller
3.The structure of second impeller 3 and the first blade wheel structure are substantially similar, and only the second impeller 3 is processed by monoblock cast, i.e. blade
It is integral type processing with end cap 1.Second impeller 3 include second partition 301, second end cover 303 and be connected to second partition 301 with
Multiple slotless blades 302 between second end cover 303, slotless blade number are identical as blade total number in the first impeller.First
Also there is slotless blade in impeller, be only parts processing with end cap.Additionally include the first pump shaft 6, the first impeller and second
Impeller 3 is set on the first pump shaft 6, as shown in Figure 2.6 structure of pump shaft is as shown in Figure 4, and pump shaft 6 is equipped with axis hole 602,
The side wall of pump shaft 6 is equipped with the radial hole being connected to axis hole 602, including radial blind holes 601 and radial through-hole 603.Radial blind holes
601 are connected to axis hole 602, by the way that lead to be introduced into axis hole 602, lead are drawn by axis hole 602 from pump.It is pumping
The end of axis 6 is also connected with wireless strain acquisition node equipment, and wireless strain acquisition node equipment is solid by modes such as magnetic absorbing seats
It is scheduled on pump shaft 6, is rotated together with pump shaft 6, wireless strain acquisition node equipment is by the radial through-hole 603 on pump shaft 6 and passes
The lead of sensor connects.In installation process, second partition 301 is closely packed together with the partition in the first impeller, due in partition
Portion's indent, therefore will form a cavity among two partitions being closely packed together, just it is used to lead in the lead on sensor
It crosses this cavity to lead at 602 position of axis hole, as shown in Figure 5.
In addition, the sensor mounting means in the embodiment of the present invention also can be applicable to other rotations, compact-sized complexity
Movable body in.
Embodiment 3:
The embodiment of the present invention also provides a kind of centrifugal pump, including the above-mentioned leaf for being convenient for measuring centrifugal blade pressure fluctuation
Wheel.The centrifugal pump can be double entry pump, and using two identical above-mentioned impellers, two partitions of impeller are opposite to be installed, can also be with
Only with an above-mentioned impeller, the centrifugal pump of single suction is such as made.
It wherein, further include the second pump shaft 6, impeller is set on the second pump shaft 6, and the second pump shaft 6 is equipped with axis hole 602, the
The side wall of two pump shafts 6 is equipped with the radial hole being connected to the axis hole 602.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of impeller for being convenient for measuring centrifugal blade pressure fluctuation, which is characterized in that including partition, end cap and multiple leaves
Piece；Multiple blades are located between the partition and the end cap, and multiple blades are structure as a whole with the partition,
The end cap is detachably connected with the blade；The adjacent blade forms runner, forms two leaves of the runner
The groove for placing sensor and the wire casing for placing lead are equipped on the opposite face of piece；The partition is equipped with and institute
State the threading hole of wire casing connection.
2. being convenient for measuring the impeller of centrifugal blade pressure fluctuation as described in claim 1, which is characterized in that the groove and
Locating part is additionally provided in the wire casing.
3. being convenient for measuring the impeller of centrifugal blade pressure fluctuation as claimed in claim 1 or 2, which is characterized in that the end
Lid passes through rivet interlacement with the blade.
4. being convenient for measuring the impeller of centrifugal blade pressure fluctuation as claimed in claim 1 or 2, which is characterized in that single institute
Stating the groove on runner is 8.
5. a kind of centrifugal pump, which is characterized in that including the first impeller and the second impeller, first impeller is claim 1-4
Described in any item impellers for being convenient for measuring centrifugal blade pressure fluctuation；
Second impeller includes second partition, second end cover and is connected to multiple between the second partition and second end cover
Blade, second impeller are structure as a whole.
6. centrifugal pump as claimed in claim 5, which is characterized in that it further include the first pump shaft, first impeller and described
Two impellers are set on first pump shaft, and the partition of first impeller is opposite with the second partition；On the pump shaft
Equipped with axis hole, the side wall of the pump shaft is equipped with the radial hole being connected to the axis hole.
7. a kind of centrifugal pump, which is characterized in that be convenient for measuring centrifugal blade pressure including according to any one of claims 1-4
The impeller of power pulsation.
8. centrifugal pump as claimed in claim 7, which is characterized in that further include the second pump shaft, the impeller is set in described
On two pump shafts, second pump shaft is equipped with axis hole, and the side wall of second pump shaft is equipped with the radial direction being connected to the axis hole
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069632.7A CN106704255B (en) | 2017-02-08 | 2017-02-08 | Centrifugal pump, the impeller for being convenient for measuring centrifugal blade pressure fluctuation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069632.7A CN106704255B (en) | 2017-02-08 | 2017-02-08 | Centrifugal pump, the impeller for being convenient for measuring centrifugal blade pressure fluctuation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106704255A CN106704255A (en) | 2017-05-24 |
| CN106704255B true CN106704255B (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710069632.7A Active CN106704255B (en) | 2017-02-08 | 2017-02-08 | Centrifugal pump, the impeller for being convenient for measuring centrifugal blade pressure fluctuation |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091246A (en) * | 2017-06-08 | 2017-08-25 | 三联泵业股份有限公司 | A kind of double-suction pump impeller tested for pressure fluctuation |
| CN112229601A (en) * | 2020-10-12 | 2021-01-15 | 中国船舶工业集团公司第七0八研究所 | Pulsating pressure test system for rotating impeller of water jet propulsion hydraulic model |
| CN113309710B (en) * | 2021-05-25 | 2022-11-01 | 清华大学 | Measuring device and measuring method for underwater mode of rotary impeller machine |
| US11781549B1 (en) | 2022-12-09 | 2023-10-10 | Waymo Llc | Air cooling system for electronic spinning assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU417703A1 (en) * | 1972-05-30 | 1974-02-28 | ||
| EP0284246A1 (en) * | 1987-03-23 | 1988-09-28 | LOWARA S.p.A. | Centrifugal pump impeller |
| CN101435437A (en) * | 2008-12-18 | 2009-05-20 | 中国农业大学 | Centrifugal pump body |
| CN203500106U (en) * | 2013-09-09 | 2014-03-26 | 长沙三昌泵业有限公司 | Double suction middle-opening centrifugal pump with open type or semi-open type impeller |
| CN104990661A (en) * | 2015-07-16 | 2015-10-21 | 江苏大学 | Device for testing unsteady surface pressure of centrifugal pump blade |
| CN105889136A (en) * | 2016-04-22 | 2016-08-24 | 江苏大学 | Centrifugal pump improvement method used for reducing pressure pulse in centrifugal pump |
-
2017
- 2017-02-08 CN CN201710069632.7A patent/CN106704255B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU417703A1 (en) * | 1972-05-30 | 1974-02-28 | ||
| EP0284246A1 (en) * | 1987-03-23 | 1988-09-28 | LOWARA S.p.A. | Centrifugal pump impeller |
| CN101435437A (en) * | 2008-12-18 | 2009-05-20 | 中国农业大学 | Centrifugal pump body |
| CN203500106U (en) * | 2013-09-09 | 2014-03-26 | 长沙三昌泵业有限公司 | Double suction middle-opening centrifugal pump with open type or semi-open type impeller |
| CN104990661A (en) * | 2015-07-16 | 2015-10-21 | 江苏大学 | Device for testing unsteady surface pressure of centrifugal pump blade |
| CN105889136A (en) * | 2016-04-22 | 2016-08-24 | 江苏大学 | Centrifugal pump improvement method used for reducing pressure pulse in centrifugal pump |
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| CN106704255A (en) | 2017-05-24 |
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