CN112302963B - Device and method for testing axial force of centrifugal pump - Google Patents
Device and method for testing axial force of centrifugal pump Download PDFInfo
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- CN112302963B CN112302963B CN202011121235.8A CN202011121235A CN112302963B CN 112302963 B CN112302963 B CN 112302963B CN 202011121235 A CN202011121235 A CN 202011121235A CN 112302963 B CN112302963 B CN 112302963B
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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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
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Abstract
The embodiment of the invention provides a device and a method for testing axial force of a centrifugal pump, which relate to the field of detection equipment, and the testing device comprises: the pump shaft is arranged in the bearing sleeve along the axial direction of the bearing sleeve, and the first bearing and the second bearing are sleeved on the peripheral surface of the pump shaft at intervals; further comprising: the pre-tightening cover plate covers a port at one end of the bearing sleeve, abuts against one side edge of a bearing outer ring of the first bearing and provides axial pre-tightening force for the bearing outer ring; the pressure sensors are arranged on one side, away from the pre-tightening cover plate, of the first bearing at intervals and used for detecting axial acting force applied to the outer ring of the bearing. The testing device for the axial force of the centrifugal pump provided by the embodiment of the invention can realize real-time measurement of the axial force of the centrifugal pump, acquire and record the axial force data, and provide reference basis for the optimal design of the impeller of the centrifugal pump and the design and model selection of the bearing.
Description
Technical Field
The invention relates to the field of detection equipment, in particular to a device and a method for testing axial force of a centrifugal pump.
Background
In the normal operation process of the centrifugal pump, axial acting force can be generated due to the fact that axial pressure difference exists between the front cover plate and the rear cover plate of the impeller. If not properly balanced, these forces will act on the shaft causing shaft play or deflection and transfer to the bearings, easily resulting in overload, thereby reducing the overall performance and life of the pump and, in severe cases, even compromising operator safety.
In order to determine the size of the bearing and the amount of axial force that the bearing may be subjected to, it is necessary to know the amount of axial force acting on the pump rotor. The axial force value obtained by theoretical calculation is often greatly different from the actual operation condition. Therefore, in order to design a perfect axial force balance mechanism, the key step is to accurately measure the axial force of the centrifugal pump through tests.
Disclosure of Invention
The embodiment of the invention provides a device and a method for testing axial force of a centrifugal pump, which are used for solving the problem that the numerical value of the axial force obtained by theoretical calculation is inaccurate in the prior art; therefore, relevant technical parameters are provided for bearing selection, and basic data are provided for designing an axial force balance mechanism scheme.
The embodiment of the invention provides a testing device for axial force of a centrifugal pump, which comprises: the pump shaft is arranged in the bearing sleeve along the axial direction of the bearing sleeve, and the first bearing and the second bearing are sleeved on the peripheral surface of the pump shaft at intervals; further comprising: the pre-tightening cover plate covers a port at one end of the bearing sleeve, abuts against one side edge of a bearing outer ring of the first bearing and gives an axial pre-tightening force to the bearing outer ring; the pressure sensors are arranged on one side, away from the pre-tightening cover plate, of the first bearing at intervals and used for detecting axial acting force applied to the bearing outer ring.
The testing device for the axial force of the centrifugal pump according to one embodiment of the invention further comprises: the sensor fixing ring is arranged on the first bearing, the pressure sensor deviates from one side of the first bearing, and the sensor fixing ring is arranged on the second bearing.
According to the testing device for the axial force of the centrifugal pump, a plurality of mounting holes are formed in the sensor fixing ring at intervals, and a plurality of pressure sensors are mounted in the mounting holes in a one-to-one correspondence mode; the inner wall of the one end of the bearing sleeve extends radially inwards to form a limiting part, and the sensor fixing ring deviates from one side of the pressure sensor and abuts against the limiting part.
The testing device for the axial force of the centrifugal pump according to one embodiment of the invention further comprises: the sensor gasket is arranged between the pressure sensors and the first bearing, one side of the sensor gasket is abutted against the other side of the outer ring of the bearing, and the other side of the sensor gasket is abutted against the pressure sensors.
According to the device for testing the axial force of the centrifugal pump, provided by the embodiment of the invention, the outer edge of one side, close to the first bearing, of the pre-tightening cover plate is provided with the first convex edge, and the pre-tightening cover plate is abutted against one side edge of the outer ring of the bearing through the first convex edge.
According to the testing device for the axial force of the centrifugal pump, the first bearing is in clearance fit with the bearing sleeve in the radial direction; the second bearing is in transition fit with the bearing sleeve in the radial direction.
The testing device for the axial force of the centrifugal pump according to one embodiment of the invention further comprises: the pressure sensor comprises a signal converter and a signal acquisition system, wherein the signal input end of the signal converter is electrically connected with the signal output ends of the plurality of pressure sensors, and the signal output end of the signal converter is electrically connected with the signal input end of the signal acquisition system.
The embodiment of the invention also provides a method for testing the axial force of the centrifugal pump, which comprises the following steps:
obtaining static axial acting force F borne by a bearing outer ring when a pump shaft is static through a plurality of pressure sensors0；
The axial acting force F of the bearing outer ring in the rotation of the pump shaft is obtained through a plurality of pressure sensors1；
Based on said static axial force F0And said rotational axial force F1The true centrifugal pump axial force F is determined.
According to one embodiment of the invention, the method for testing the axial force of the centrifugal pump further comprises the following steps:
and controlling the centrifugal pump to work at different rotating speeds and flows to obtain the real axial force F of the centrifugal pump under different rotating speeds and flows.
The testing device for the axial force of the centrifugal pump provided by the embodiment of the invention has the following advantages:
1. the testing device for the axial force of the centrifugal pump provided by the embodiment of the invention can realize real-time measurement of the axial force of the centrifugal pump, acquire and record the axial force data, and provide reference basis for the optimal design of the impeller of the centrifugal pump and the design and model selection of the bearing.
2. The testing device for the axial force of the centrifugal pump provided by the embodiment of the invention can be used for testing the axial force data of the centrifugal pump at different flow rates and different rotating speeds.
3. The device for testing the axial force of the centrifugal pump provided by the embodiment of the invention adopts the mechanical pressure sensor, and the measured data has better stability and reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic side view, sectional and structural diagram of a centrifugal pump axial force testing device provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a partial enlarged structure at A in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a sensor gasket according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a sensor gasket according to an embodiment of the present invention in a side view and in a cross-sectional configuration;
FIG. 5 is a schematic structural diagram of a sensor fixing ring according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the relationship between the rotating speed and the flow rate and the axial force of the centrifugal pump provided by the embodiment of the invention.
Reference numerals:
1. a pump body; 2. a front end cover; 3. an impeller; 4. a pump shaft; 5. a second bearing; 6. a pressure sensor; 7. a first bearing; 8. a sensor fixing ring; 9. a sensor gasket; 10. pre-tightening the cover plate; 11. a bearing sleeve; 12. a limiting part; 13. a first ridge; 14. the second ridge.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a centrifugal pump axial force testing device according to an embodiment of the present invention with reference to fig. 1 to 6.
Fig. 1 illustrates a side sectional structural schematic view of a centrifugal pump axial force testing device, as shown in fig. 1, the testing device comprises: the pump shaft 4, the first bearing 7, the second bearing 5, the bearing sleeve 11, the pre-tightening cover plate 10 and the plurality of pressure sensors 6. Bearing sleeve 11 is cavity tubular structure, and bearing sleeve 11 sets up inside pump body 1, and the one end of pump body 1 is provided with front end housing 2, and the other end of pump body 1 is provided with the rear end cap, and pump shaft 4 sets up in bearing sleeve 11 along bearing sleeve 11's axial, and a pot head of pump shaft 4 is equipped with impeller 3, and the other end of pump shaft 4 extends outward after passing the rear end cap. A rear cavity is formed between the inner wall of the pump body 1 and the impeller 3, and a front cavity communicated with the rear cavity is formed between the front end cover 2 and the impeller 3.
The first bearing 7 and the second bearing 5 are sleeved on the outer peripheral surface of the pump shaft 4 at intervals, and the pump shaft 4 is in running fit with the bearing sleeve 11 through the first bearing 7 and the second bearing 5. The first bearing 7 is in clearance fit with the bearing sleeve 11 in the radial direction, G6, H7, H6 and the like are recommended to be selected as a fit tolerance band, and the clearance fit of the first bearing 7 and the bearing sleeve 11 in the radial direction ensures that the bearing sleeve 11 cannot generate axial friction force on the first bearing 7. The second bearing 5 and the bearing sleeve 11 are in transition fit in the radial direction, JS6, J6, K6 and the like are recommended to be selected for a fit tolerance zone, an axial gap exists between one side, away from the first bearing 7, of the second bearing 5 and the bearing sleeve 11, the size of the axial gap is larger than or equal to the maximum deformation amount of the pressure sensor 6 caused by axial acting force, and therefore the second bearing 5 is prevented from touching other parts, the second bearing 5 is prevented from being in contact with the bearing sleeve 11 or other parts in the axial direction before the pressure sensor 6 does not reach the maximum deformation amount, the measured value of the pressure sensor 6 is small, and accuracy of the measured result of the pressure sensor 6 is guaranteed.
In the present embodiment, the first bearing 7 and the second bearing 5 are both angular contact bearings, but may be deep groove ball bearings or self-aligning roller bearings. The larger the contact angle of the angular contact bearing, the larger the axial load capacity, and the smaller the contact angle, the more advantageous the high-speed rotation. Because the axial pressure difference exists between the front cover plate and the rear cover plate of the impeller 3 of the water pump, axial acting force can be generated, if the acting force acts on the bearing, the bearing is damaged, so that the bearing with better axial load capacity is needed, and the angular contact bearing can bear radial load and axial load at the same time, so that the angular contact bearing is more suitable for a centrifugal pump compared with other types of bearings. In addition to the above advantages, the angular contact bearing has the following advantages: 1. the limiting rotating speed is higher; 2. the friction torque is relatively small; 3. the same external dimension is larger than the dynamic and static load capacity of the deep groove ball bearing; 4. high rotation precision and low noise. Compared with other types of bearings, the angular contact bearing is more suitable for high-speed and high-precision rotation occasions.
Fig. 2 illustrates a partial enlarged structural schematic diagram at a position a in fig. 1, as shown in fig. 2, the pre-tightening cover plate 10 is in an annular structure, the pre-tightening cover plate 10 covers a port at one end of the bearing sleeve 11, the pre-tightening cover plate 10 is in interference fit with the bearing sleeve 11, and the pre-tightening cover plate 10 abuts against one side edge of the bearing outer ring of the first bearing 7 and applies an axial pre-tightening force to the bearing outer ring. The pretightening force can make the pretightening cover plate 10, the first bearing 7 and the pressure sensor 6 always keep in a leaning state so as to avoid gaps among the components and further avoid errors in the measurement result of the pressure sensor 6. Preferably, the outer edge of one side of the pre-tightening cover plate 10 close to the first bearing 7 is provided with a first protruding edge 13, and the pre-tightening cover plate 10 abuts against one side of the outer ring of the bearing through the first protruding edge 13 during installation. The pressure sensors 6 are arranged at intervals on one side of the first bearing 7, which is far away from the pre-tightening cover plate 10, and the pressure sensors 6 are used for detecting the axial acting force applied to the bearing outer ring of the first bearing 7. The pressure sensor 6 may be fixed to the inner wall of the bearing sleeve 11, or a plurality of pressure sensors 6 may be fixed to a fixing member detachably connected to the bearing sleeve 11, and the pressure sensor 6 may be fixed to a plurality of types, which is not limited herein, and those skilled in the art may determine the fixing manner according to specific requirements in specific embodiments.
Further, for the axial effort that accurate detection bearing outer ring received, a plurality of pressure sensor 6 equidistance interval sets up, and the axial effort that the bearing outer ring received can evenly transmit for every pressure sensor 6 like this, avoids because pressure sensor 6 atress inequality causes measuring result to have the error. Preferably, the pressure sensor 6 is an LFC-08 miniature pressure sensor, the measuring range of the pressure sensor 6 is 5-100kg, and the output sensitivity range of the pressure sensor 6 is 1.0-1.5 mV. The miniature pressure type sensor is a sensor based on piezoelectric effect, and is a self-generating type and electromechanical conversion type sensor. The piezoelectric material of the miniature pressure sensor generates charge on the surface after being stressed, and the charge is amplified by the charge amplifier and the measuring circuit and is converted into impedance, so that the charge is in direct proportion to the electric quantity output of the external force. The miniature pressure type sensor has the advantages of high sensitivity, high signal-to-noise ratio, simple structure, reliable work and small occupied space, and is particularly suitable for the use working condition of limited internal space of a centrifugal pump.
Fig. 5 illustrates a schematic structural diagram of a sensor fixing ring 8 according to an embodiment of the present invention, and as shown in fig. 5, the testing apparatus in this embodiment further includes: the fixed ring 8 of sensor, the fixed ring 8 of sensor are the loop configuration, and the external diameter of the fixed ring 8 of sensor is less than the internal diameter of bearing sleeve 11, and the internal diameter of the fixed ring 8 of sensor is greater than the external diameter of bearing inner ring. The sensor fixing ring 8 is arranged on one side, away from the first bearing 7, of the pressure sensors 6, the pressure sensors 6 are respectively arranged on one side, close to the first bearing 7, of the sensor fixing ring 8, the purpose of the sensor fixing ring 8 is arranged to fix the pressure sensors 6, and the pressure sensors 6 are conveniently installed.
Further, as a preferable fixing manner, the sensor fixing rings 8 are provided with a plurality of mounting holes at equal intervals, and the size and shape of the mounting holes are matched with those of the pressure sensors 6. The plurality of pressure sensors 6 are mounted in the plurality of mounting holes in a one-to-one correspondence, and the pressure sensors 6 may be fixed in the mounting holes by screws or by glue. The number of the mounting holes in the embodiment is three, and more mounting holes can be arranged according to the requirement. Correspondingly, the inner wall of one end of the bearing sleeve 11 extends radially inwards to form a limiting part 12, and one side of the sensor fixing ring 8, which is far away from the pressure sensor 6, abuts against the limiting part 12. The limiting part 12 is used for limiting the sensor fixing ring 8, and prevents the sensor fixing ring 8 from moving when receiving axial acting force, so that the accuracy of the measuring result of the pressure sensor 6 is influenced. In the present embodiment, the stopper portion 12 has a continuous annular structure, but the structure of the stopper portion 12 is not limited to this, and the stopper portion 12 may be formed of a plurality of arc-shaped pieces arranged in an annular shape.
Further, one side that the solid fixed ring 8 of sensor deviates from pressure sensor 6 is provided with a plurality of location blind holes, one side that spacing portion 12 is close to the solid fixed ring 8 of sensor is provided with a plurality of location archs, the bellied quantity in location and the quantity and the position one-to-one in location blind hole, through protruding and the cooperation of location blind hole in location when installing the solid fixed ring 8 of sensor, pack into the solid fixed ring 8 back of sensor at every turn, every pressure sensor 6's position can not change, guarantee that the measurement basic point is the same at every turn.
Fig. 3 illustrates a schematic structural diagram of a sensor gasket, and fig. 4 illustrates a schematic structural diagram of a sensor gasket in a side view cross section, as shown in fig. 3 and 4, in accordance with an embodiment of the present invention, the testing apparatus further includes: the sensor gasket 9 is of an annular structure, the sensor gasket 9 is arranged between the pressure sensors 6 and the first bearing 7, one side of the sensor gasket 9 abuts against the other side of the bearing outer ring of the first bearing 7, and the other side of the sensor gasket 9 abuts against the pressure sensors 6. The outer diameter of the sensor gasket 9 is equal to the outer diameter of the outer ring of the first bearing 7, the inner diameter of the sensor gasket 9 is larger than the outer diameter of the inner ring of the bearing, the contact surface of the pressure sensor 6 and the outer ring of the bearing can be increased through the sensor gasket 9, the contact point of each pressure sensor 6 is ensured to be in the same plane, and the accuracy of the measuring result is improved.
Further, the edge of one side of the sensor gasket 9 close to the first bearing 7 is provided with a second convex edge 14, and the second convex edge 14 abuts against the outer ring of the first bearing 7, so that the sensor gasket 9 is prevented from contacting with the inner ring of the first bearing 7.
During installation, the pressure sensor 6 is installed in the installation hole, the sensor fixing ring 8 is placed in the bearing sleeve 11, the sensor fixing ring 8 abuts against the limiting part 12, the sensor gasket 9, the first bearing 7 and the pre-tightening cover plate 10 are sequentially installed, and the pre-tightening cover plate 10, the first bearing 7, the sensor gasket 9 and the pressure sensor 6 are kept in an abutting state.
According to an embodiment of the present invention, the testing apparatus in this embodiment further includes: the signal converter and the signal acquisition system, the signal input part of signal converter is connected with the signal output part electricity of a plurality of pressure sensor 6, and the signal output part of signal converter is connected with the signal input part electricity of signal acquisition system. In this embodiment, the accuracy of the signal converter is ± 0.05%, and the sampling frequency is above 5000 Hz.
During testing, the axial acting force received by the pressure sensor 6 is converted into an electric signal, the electric signal output by the pressure sensor 6 is amplified by the signal converter and then converted into a digital signal, and the digital signal is acquired and recorded by the signal acquisition system.
The invention also provides a method for testing the axial force of the centrifugal pump, which comprises the following steps:
the static axial acting force F of the outer ring of the bearing when the pump shaft 4 is static is obtained through a plurality of pressure sensors 60；
When the pump shaft 4 is static, the pressure sensor 6 can measure static axial acting force F due to the existence of pretightening force0Static axial force F0Less than or equal to the pre-load force.
The axial acting force F of the bearing outer ring in the rotation process of the pump shaft 4 is obtained through a plurality of pressure sensors 61；
Based on said static axial actionForce F0And said rotational axial force F1The true centrifugal pump axial force F is determined.
Wherein the centrifugal pump axial force F can be obtained according to the following formula (1);
F＝F1-F0 (1)
further, the method for testing the axial force of the centrifugal pump further comprises the following steps:
and controlling the centrifugal pump to work at different rotating speeds and flows to obtain the real axial force F of the centrifugal pump under different rotating speeds and flows.
By acquiring the real axial force F of the centrifugal pump under different rotating speeds and flow conditions, the change rule of the axial force F of the centrifugal pump along with the rotating speed, the flow and the like can be conveniently summarized, basic data can be provided for model selection of a bearing of the centrifugal pump, and a reliable reference basis can also be provided for the optimal design of an axial force balancing device of the centrifugal pump.
Fig. 6 illustrates a relationship diagram of a rotation speed, a flow rate and an axial force of the centrifugal pump, as shown in fig. 6, in this embodiment, data of four rotation speeds (n-2000 r/min, n-3000 r/min, n-4000 r/min, n-5000 r/min) and the axial force F of the centrifugal pump at different flow rates are measured, and it can be found that as the rotation speed increases, the axial force tends to increase, and as the flow rate increases, the axial force decreases.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A centrifugal pump axial force testing apparatus, the testing apparatus comprising: the pump shaft is arranged in the bearing sleeve along the axial direction of the bearing sleeve, and the first bearing and the second bearing are sleeved on the peripheral surface of the pump shaft at intervals; it is characterized by also comprising: the pre-tightening cover plate covers a port at one end of the bearing sleeve, abuts against one side edge of a bearing outer ring of the first bearing and gives an axial pre-tightening force to the bearing outer ring; the pressure sensors are arranged on one side, away from the pre-tightening cover plate, of the first bearing at intervals and used for detecting axial acting force applied to the bearing outer ring;
the second bearing and the bearing sleeve are in transition fit in the radial direction, an axial gap is formed between one side, away from the first bearing, of the second bearing and the bearing sleeve, and the size of the axial gap is larger than or equal to the maximum deformation amount of the pressure sensor caused by axial acting force.
2. The centrifugal pump axial force testing apparatus of claim 1, further comprising: the sensor fixing ring is arranged on the first bearing, the pressure sensor deviates from one side of the first bearing, and the sensor fixing ring is arranged on the second bearing.
3. The device for testing the axial force of the centrifugal pump according to claim 2, wherein the sensor fixing ring is provided with a plurality of mounting holes at intervals, and a plurality of the pressure sensors are mounted in the plurality of the mounting holes in a one-to-one correspondence manner; the inner wall of the one end of the bearing sleeve extends radially inwards to form a limiting part, and the sensor fixing ring deviates from one side of the pressure sensor and abuts against the limiting part.
4. A centrifugal pump axial force testing apparatus according to claim 3, further comprising: the sensor gasket is arranged between the pressure sensors and the first bearing, one side of the sensor gasket is abutted against the other side of the outer ring of the bearing, and the other side of the sensor gasket is abutted against the pressure sensors.
5. The device for testing the axial force of the centrifugal pump according to claim 1, 2, 3 or 4, wherein the outer edge of one side of the pre-tightening cover plate close to the first bearing is provided with a first protruding edge, and the pre-tightening cover plate abuts against one side of the outer ring of the bearing through the first protruding edge.
6. A centrifugal pump axial force testing arrangement according to claim 5, wherein said first bearing is radially clearance fitted with said bearing sleeve.
7. A centrifugal pump axial force testing arrangement according to claim 1, 2, 3 or 4, characterized in that the testing arrangement further comprises: the pressure sensor comprises a signal converter and a signal acquisition system, wherein the signal input end of the signal converter is electrically connected with the signal output ends of the plurality of pressure sensors, and the signal output end of the signal converter is electrically connected with the signal input end of the signal acquisition system.
8. A method for testing the axial force of a centrifugal pump by using the device for testing the axial force of the centrifugal pump according to any one of claims 1 to 7, wherein the method for testing the axial force of the centrifugal pump comprises the following steps:
obtaining static axial acting force F borne by a bearing outer ring when a pump shaft is static through a plurality of pressure sensors0；
The axial acting force F of the bearing outer ring in the rotation of the pump shaft is obtained through a plurality of pressure sensors1；
Based on said static axial force F0And said rotational axial force F1The true centrifugal pump axial force F is determined.
9. The method for testing the axial force of a centrifugal pump according to claim 8, further comprising the steps of:
and controlling the centrifugal pump to work at different rotating speeds and flows to obtain the real axial force F of the centrifugal pump under different rotating speeds and flows.
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| CN202011121235.8A CN112302963B (en) | 2020-10-19 | 2020-10-19 | Device and method for testing axial force of centrifugal pump |
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| CN202011121235.8A CN112302963B (en) | 2020-10-19 | 2020-10-19 | Device and method for testing axial force of centrifugal pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092129A (en) * | 2015-07-09 | 2015-11-25 | 广东省佛山水泵厂有限公司 | Rotation machine axial force testing apparatus and testing method thereof |
| CN105465003A (en) * | 2015-12-28 | 2016-04-06 | 沈阳鼓风机集团核电泵业有限公司 | Axial force testing system and method for vertical shielding pump |
| CN206874530U (en) * | 2017-07-05 | 2018-01-12 | 武安市宏泰机械泵业有限公司 | A kind of axial force measuring device of single stage single suction volute pump |
| CN108426661A (en) * | 2018-02-28 | 2018-08-21 | 北京新能源汽车股份有限公司 | Detection device and detection method for axial force of driving motor and data processing equipment |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092129A (en) * | 2015-07-09 | 2015-11-25 | 广东省佛山水泵厂有限公司 | Rotation machine axial force testing apparatus and testing method thereof |
| CN105465003A (en) * | 2015-12-28 | 2016-04-06 | 沈阳鼓风机集团核电泵业有限公司 | Axial force testing system and method for vertical shielding pump |
| CN206874530U (en) * | 2017-07-05 | 2018-01-12 | 武安市宏泰机械泵业有限公司 | A kind of axial force measuring device of single stage single suction volute pump |
| CN108426661A (en) * | 2018-02-28 | 2018-08-21 | 北京新能源汽车股份有限公司 | Detection device and detection method for axial force of driving motor and data processing equipment |
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