CN105784231B - Band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial-force testing device and method - Google Patents
Band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial-force testing device and method Download PDFInfo
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- CN105784231B CN105784231B CN201610139666.4A CN201610139666A CN105784231B CN 105784231 B CN105784231 B CN 105784231B CN 201610139666 A CN201610139666 A CN 201610139666A CN 105784231 B CN105784231 B CN 105784231B
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- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title abstract description 10
- 238000010992 reflux Methods 0.000 claims abstract description 15
- 239000012530 fluid Substances 0.000 claims description 78
- 238000002955 isolation Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 15
- 238000010998 test method Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000001727 in vivo Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 7
- 238000005457 optimization Methods 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0009—Force sensors associated with a bearing
- G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention provides a kind of band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial-force testing device and methods, compared with prior art, the test of the radial pressure flow resistance and axial asymmetric axial force size under the conditions of different rotating speeds, gap width, flow, reflux hole site sum number amount of the face Gap Annular Flow with return port may be implemented in the present invention, provides technical parameter for the reflux pore structure design and optimization of high-power shield electric machine main pump.
Description
Technical field
The present invention relates to the technical fields of mechanical test device design, and in particular to band return port disk Gap Annular Flow is radial
Pressure flow resistance and asymmetric axial-force testing device and method.
Background technique
The power source that core main pump is recycled as nuclear reactor coolant cooling medium, is known as the heart of nuclear reactor
It is dirty.Current in-service nuclear reactor main pump, mostly uses shaft seal pump as Core cooling agent main pump.The appearance of all previous nuclear accident is to nuclear power
More stringent requirements are proposed for safety, and in order to improve security of system from principle, the shaft seal pump being once widely used is because of its high pressure
This technological difficulties of dynamic sealing and by the canned motor pump of No leakage replace, appear in third-generation nuclear power technology.Coolant Pump is logical
The conversion of over-voltage force boundary introduces high-temperature, high pressure fluid inside motor, dynamic sealing is replaced using static seal, with complete pressure
Boundary is instead of the incomplete pressure boundary of shaft seal pump, to improve reactor core safety.However Coolant Pump flies due to upper
For wheel between the high-temperature cooling water and upper transverse bearing of primary Ioops, primary Ioops heat is transmitted to flywheel area by heat shielding,
So that upper flywheel area temperature is very high.And be exactly transverse bearing in the lower section of upper flywheel area, in order to cool down transverse bearing, in radial direction
Bearing internal external opens up runner, and inner flow passage is flowed out by flywheel lower end disk gap through return port to be mixed with external flow passage.
However since opening up for return port can generate an additional axial force, to the load for increasing thrust bearing.Furthermore
Due to the pumping effect of flywheel end face, the split ratio of interior outer flow passage is caused to change, therefore to radial axle under special operation condition
The bearing capacity held impacts.
Therefore, it is necessary to one kind to band return port disk Gap Annular Flow different rotating speeds, reflux hole site and gap width under
The device and method that radial pressure flow resistance and asymmetric axial force measure, for high-power shield electric machine main pump return port
Structure design and optimization provides technical parameter, provides fractional load parameter for Designing Thrust Bearing.
Summary of the invention
It is an object of that present invention to provide band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial force testings
Method and device cannot accurately measure additional axial force and resistance system to solve the prior art with very big dynamic sealing frictional force
Number, to be difficult for the structure design and load of thrust bearing thereof assessment offer of cold loop return port in high-power shield electric machine main pump
The technical matters of technical parameter.
The object of the invention is accomplished by the following way:
A kind of band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial-force testing device, including upper end
Lid, lower cover, shell, shaft, the upper end cover, lower cover lid are located on the upper and lower end of the shell and form a closed chamber；
A recessed portion is equipped at the lower cover upper end center, the lower end of the shaft puts in the recessed portion and formed between annular
Gap, the middle part that the upper end of the shaft passes through the upper end cover are connect with external driver device；The shaft is relative on described
End cap and lower cover rotation；
Be equipped in the closed chamber fluid driving disk being set in the shaft, fluid isolation cover, seal cavity,
Multi-axis force transducer；The lower end surface one disk gap of formation opposite with the upper surface of the lower cover of the fluid driving disk；
The lower end of the seal cavity is fixedly connected with the upper end of fluid driving disk；The multi-axis force transducer is located at described close
It seals in cavity, the multi-axis force transducer is fixedly connected with seal cavity and shaft；The fluid isolation the cover is located at described
In seal cavity, and it is located above fluid driving disk, the fluid isolation cover is fixedly connected with the shaft；Described turn
Torque on axis on multi-axis force transducer comes solely from the fluid driving disk；
The access aperture communicated with the recessed portion is provided on the lower cover at center, the lower cover inner circumferential is uniformly distributed
There are multiple tap holes, the return port for being connected to the tap hole and the closed chamber is provided on each tap hole；Liquid is certainly
The access aperture enters in the closed chamber, then successively flows back from the return port, tap hole；The access aperture,
It is provided with pressure sensor on tap hole, is additionally provided with flowmeter in the access aperture.
Preferably, bulge-structure is provided on the fluid isolation cover lower ending opening, it is corresponding on the fluid driving disk
Be provided with groove structure at position, the bulge-structure injects in the groove structure, and fluid driving disk with it is described
There is no power transmitting between fluid isolation cover, between the bulge-structure and the groove structure.
Preferably, the seal cavity includes the cavity structure of a lower ending opening, the cavity structure is set in described
In shaft, and the lower end of the cavity structure and fluid driving disk are fixedly connected to form complete seal cavity.
Preferably, the seal cavity further includes a upper cover plate, the upper cover plate is fixed at outside the cavity structure
Lateral roof, and the upper cover plate is set in the shaft.
Preferably, between the upper cover plate and the cavity structure, the cavity structure and the fluid driving disk it
Between be provided with sealing ring.
Preferably, oil enveloping structure between the upper cover plate and the shaft.
Preferably, being provided with oil enveloping structure between the upper end cover, lower cover and the shaft.
Preferably, the tap hole being arranged radially along the lower cover, and the outflow end of the tap hole is positioned at described
The side of lower cover；
It is provided with multiple return ports on each tap hole, the return port is perpendicular to the tap hole, and described time
One end of discharge orifice connects the tap hole, and the other end extends to the upper surface of the lower cover.
Preferably, the outlet of one of them return port is provided with pressure sensing with respect to place in multiple return ports
Device is provided with the plug screw of control on-off on remaining described return port.
Preferably, position, which can be interchanged, in the plug screw and the pressure sensor carries out installation settings.
Preferably, being provided on the outer diameter of the plug screw for installation into the first screw thread on the lower cover, the pressure
It is provided on the outer diameter of force snesor for installation into the second screw thread on the lower cover, first screw thread and described second
Thread size, shape are identical.
Preferably, be additionally provided on the inner surface of the lower cover one for adjust fluid driving disk and it is described under
The adjustment disk of disk gap size between end cap is provided on the adjustment disk with the return port corresponding position and connect
The through-hole of the return port and the closed chamber.
Preferably, the multi-axis force transducer includes axial force measuration unit and torque measurement unit.
A kind of band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric shaft are to force test method, using institute as above
Band return port disk Gap Annular Flow radial pressure flow resistance and the asymmetric axial-force testing device stated, comprising the following steps:
A, each component is attached with the connection relationship by claim 1；Multi-axis force transducer when static
Only by responsive to axial force, axial force measured by the multi-axis force transducer is the weight that the seal cavity and fluid drive disk
Measure F1；
B, liquid is filled into the closed chamber；
C, start the external driver device, so that the shaft rotates, the shaft drives the fluid to drive disk
And fluid isolation cover rotates together, the fluid driving disk rotational drives the indoor liquid of closing chamber from the tap hole
Outflow；
After the shaft slow-roll stabilization, its revolving speed W is recorded；It records simultaneously, the torque measuring of the multi-axis force transducer
The numerical value G of unit, the numerical value F2 of the axial force measuration unit of the multi-axis force transducer are measured, pressure sensor in the access aperture
Numerical value P1, the numerical value P2 of pressure sensor on the tap hole；The flow of flowmeter is Q, and the sectional area of access aperture is A, liquid
The density of body is ρ；
Thus it obtains, the asymmetric axial force generated with return port disk gap location is F1-F2, and resistance coefficient is
Preferably, further include:
D, driving device is controlled to change the revolving speed of the shaft, repeats step c, and obtain under different rotating speeds, band reflux
The asymmetric axial force and resistance coefficient that hole disk gap location generates.
Preferably, multiple return ports are provided on each tap hole, the outlet phase of one of them return port
Pressure sensor is provided with to place, the plug screw of control on-off is provided on remaining described return port；Test method further include:
E, by adjust the plug screw and pressure sensor setting position in different return ports and plug screw it is logical
It is disconnected, step b-c is repeated, is obtained under different reflux hole sites, under different reflux hole numbers, band return port disk gap location generates
Asymmetric axial force and resistance coefficient.
Preferably, be additionally provided on the inner surface of the lower cover one for adjust fluid driving disk and it is described under
The adjustment disk of disk gap size between end cap；Test method further include:
F, the adjustment disk of different-thickness is replaced, step a-c is repeated, obtains under different disk gaps, band return port
The asymmetric axial force and resistance coefficient that disk gap location generates.
Preferably, the liquid uses water.
The present invention due to using the technology described above, is allowed to compared with prior art, have the following advantages that and actively imitate
Fruit:
Band return port disk Gap Annular Flow radial pressure flow resistance provided by the invention and asymmetric axial-force testing device and
The disk Gap Annular Flow with return port may be implemented in different rotating speeds, gap width, flow, reflux hole site sum number amount in method
Under the conditions of radial pressure flow resistance and axial asymmetric axial force size test, be the interior cold of high-power shield electric machine main pump
Flow back pore structure design and optimization offer reference data in circuit, provides parameter for load of thrust bearing thereof assessment.
Detailed description of the invention
In conjunction with attached drawing, by hereafter state detailed description, can be more clearly understood that above-mentioned and other feature of the invention and
Advantage, in which:
Fig. 1 is that band return port disk Gap Annular Flow radial pressure flow resistance provided by the invention and asymmetric axial force testing fill
The structural schematic diagram set；
Fig. 2 is the cross-sectional view of lower cover in the present invention.
Specific embodiment
Referring to the attached drawing for showing the embodiment of the present invention, the present invention is described in more detail.However, the present invention can be with
Many different forms are realized, and should not be construed as being limited by the embodiment herein proposed.On the contrary, proposing that these embodiments are
In order to reach abundant and complete disclosure, and those skilled in the art is made to understand the scope of the present invention completely.These are attached
In figure, for clarity, the size and relative size in layer and region may be exaggerated.
The present invention provides a kind of band return port disk Gap Annular Flow radial pressure flow resistances and asymmetric axial force testing to fill
Set and method, it can be achieved that become disk gap, fluid outlet radial position and quantity, variable-flow, become disk revolving speed in the case where,
The quick test of asymmetric axial force and radial pressure flow resistance coefficient under disk pumping effect effect, is shield electric machine
The interior cold loop reflux pore structure design and optimization of main pump provides reference data, provides parameter for load of thrust bearing thereof assessment.
Below in conjunction with the preferred embodiment of the present invention, the present invention will be further described.
Embodiment 1
Referring to Fig.1-2, the present invention provides a kind of band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric shafts
To force test device, including upper end cover 2, shell 6, lower cover 10, shaft 28；Shell 6 is in the barrel-like structure of about one end opening,
Upper end cover 2, lower cover 10 cover on the upper and lower side for being located at shell 6 respectively and form a closed chamber, and one end of shaft 28 is threaded through envelope
In closed chamber room.The fluid driving disk 9 being set in shaft 28, fluid isolation cover 3, seal cavity, more is equipped in closed chamber
Axial force sensor 24；The lower end surface formation disk gap opposite with the inner surface of lower cover 10 of fluid driving disk 9；Seal cavity
The upper end of lower end and fluid driving disk 9 be fixedly connected；Multi-axis force transducer 24 is located in seal cavity, multi-axis force transducer
24 are fixedly connected with the upper end of seal cavity and shaft 28；The lid of fluid isolation the cover 3 is located in seal cavity, and is located at fluid
9 top of disk is driven, fluid isolation cover 3 is fixedly connected with shaft 28；Access aperture, lower cover are provided on lower cover 10 at center
10 inner circumferentials are evenly equipped with multiple tap holes 18, are provided with connection tap hole and closed chamber on lower cover 10 at each tap hole
Return port 11；Liquid enters in closed chamber from access aperture, then successively flows back from return port 11, tap hole 18；Into
Enter hole, be provided with pressure sensor 12,15,17 on tap hole 18, is additionally provided with flowmeter 14 in access aperture.
In the present embodiment, the upper end of shaft 28 pass through upper end cover 2 middle part connect with external driver device, shaft 28 and
Sealing device, specially oil enveloping structure are additionally provided between upper end cover 2, to ensure that the leakproofness of seal cavity；It drives outside
Dynamic device band turn axis 28 rotates, and shaft 28 can be rotated relative to upper end cover 2 and lower cover 10.
In the present embodiment, it is provided with a recessed portion 30 at 10 upper surface center of lower cover, the lower end of shaft 28 puts in recessed
In concave portion 30, annular gap is formed between 28 lower end of shaft and recessed portion 30；Recessed portion 30 is arranged in the present invention on lower cover 10,
And the lower end of shaft 28 is put in recessed portion 30 so that shaft 28 fluid in seal cavity is played in the rotation it is pre-
The effect of rotation, so as to the state of fluid in simulation core main pump in all directions.
In the present embodiment, seal cavity includes the cavity structure 7 of a lower ending opening, and cavity structure 7 is set in shaft 28
On, and the lower end of cavity structure 7 is fixedly connected with fluid driving disk 9 by modes such as screws, so that it is complete close to form one
Seal cavity.Multi-axis force transducer 24 is located in the seal cavity that cavity structure 7 and fluid driving disk 9 form, and multi-axial forces pass
The fixation of sensor 24 is set in shaft 28, and the upper end of multi-axis force transducer 24 is fixedly connected on cavity structure by modes such as screws
7 top.Specifically, multi-axis force transducer 24 is connected in shaft 28 by flange 23, the lower end of multi-axis force transducer 24 with
Flange 23 is fixedly and coaxially connected by modes such as screws, and flange 23 is also set in shaft 28, the inner ring and shaft 28 of flange 23
Between connected by key 29, the lower end of flange 23 is additionally provided with a locking nut 22 being set in shaft 28, thus by multiaxis
Force snesor 24 is fixed in shaft 28；Certainly, the connection type between multi-axis force transducer 24 and shaft 28 is not only limited to
In the above, can also design as the case may be, herein with no restriction.
In the present embodiment, seal cavity further includes a upper cover plate 26, and upper cover plate 26 is also set in shaft 28, upper cover plate 28
It is fixedly connected with cavity structure 7 by modes such as screws；Since multi-axis force transducer 24 is connected to cavity by way of screw
On the top of structure 7, screw connection can have certain gap, and the present invention at the top of cavity structure 7 by adding on one
Cover board 26 influences the normal work of multi-axis force transducer 24 to prevent fluid from entering in seal cavity from there.In this implementation
In example, the junction of upper cover plate 26 and cavity structure 7 is provided with O-ring seal 25, and oil is equipped between upper cover plate 26 and shaft 28
Seal structure 27 is provided with O-ring seal 21 between cavity structure 7 and fluid driving disk 9, fluid drive disk 9 and shaft it
Between be provided with oil enveloping structure 8, the present invention is by the setting of above-mentioned each sealing structure, to ensure that the leakproofness of seal cavity
Energy.
In the present embodiment, 3 lower ending opening of fluid isolation cover is fixed in shaft 28 by key 4 and locking nut 5；Stream
The lid of body isolation cover 3 is located in seal cavity, and is located at the top of fluid driving disk 9；The present invention is upper fluid driving disk 9
One fluid isolation cover 3 of side's setting, main purpose is that the fluid that will act in seal cavity is kept apart, and prevents side from flowing
Body has an impact fluid driving disk end face torque measurement.
Further, the edge of 3 lower ending opening infinite approach fluid of fluid isolation cover driving, 9 upper surface of disk, but fluid
Powerless transmitting between isolation cover 3 and fluid driving disk 9, to ensure that the torque in shaft 28 on multi-axis force transducer 24
Come solely from fluid driving disk.Specifically, the lower end of fluid isolation cover 3 and fluid drive at the minimum clearance between disk 9
It is provided with bulge-structure, groove structure, bulge-structure 31, fluid driving are provided on specific 3 lower ending opening of fluid isolation cover
Corresponding position is provided with groove structure 32 on circle 9, and bulge-structure 31 injects in groove structure 32, and bulge-structure 31 and groove
There is no power transmitting between structure 32；The setting of bulge-structure, groove structure causes fluid to drive under the action of being used to reduce centrifugal force
Fluid between dynamic disk 9 and fluid isolation cover 3 flows out outward, to influence to test structure.
In the present embodiment, multi-axis force transducer 24 includes axial force measuration unit and torque measurement unit, torque measurement
Unit is used to calculate the mechanical work of extraneous input gap flow field, and axial force measuration unit is for measuring due to lower end surface return port
Open up the asymmetric axial force of generation.In the present embodiment, shaft 28 is a hollow shaft, in order to the letter of multi-axis force transducer 24
Number line transmits signal by hollow shaft outward.
In the present embodiment, multiple tap holes 18, multiple tap holes are provided in multiple lower covers 10 combined with Figure 1 and Figure 2,
18 equal being arranged radially along lower cover 10, and the outflow end of tap hole 18 is located at the side of lower cover 10；Multiple tap holes 18 weeks
To being evenly arranged in lower cover 10, the setting number of tap hole 18 can be set as the case may be, in the present embodiment under
It is provided with 10 tap holes 18 on end cap 10, may also set up 4,8 etc., herein with no restriction.
In the present embodiment, be provided with multiple return ports 11 on each tap hole 18, the setting position of return port 11 with
And setting number can be adjusted as the case may be, herein with no restriction, be set on each tap hole 18 in the present embodiment
Return port 11 there are three setting；Return port 11 connects tap hole 18 perpendicular to tap hole 18, one end of return port 11, and the other end extends
To the upper surface of lower cover 10, from the effect for realizing connection tap hole 8 and closed chamber.
In the present embodiment, in multiple return ports 11, the outlet of one of return port 11 is provided with pressure with respect to place and passes
Sensor 17,12 is provided with the plug screw 16,13 of control on-off on remaining return port 11.Wherein, the outer diameter and pressure sensor of plug screw
Position can be interchanged and carry out installation settings；For example, as shown in fig. 1, when needing outermost return port 11 to open, separately
Outer two return ports 11 are clogged by plug screw, and pressure sensor is located at outermost return port exit；It is returned when needs are most inboard
When discharge orifice is opened, the pressure sensor at the plug screw and outermost return port at this can be subjected to location swap, thus
It can easily realize that return port sets test at different locations.
Further, it is provided on the outer diameter of plug screw for installation into the first screw thread on lower cover, pressure sensor
It is provided on outer diameter for installation into the second screw thread on lower cover 10, first screw thread and second thread size, shape
Shape is identical, to guarantee to realize the exchange between plug screw and pressure sensor.
In the present embodiment, one is additionally provided on the upper end of lower cover 10 for adjusting fluid driving disk 9 and lower cover
The adjustment disk 19 of disk gap size between 19 adjusts and is provided with 11 corresponding position of return port on disk 19 and connect reflux
The through-hole in hole 11 and closed chamber.Wherein, it is ready for the adjustment disk 19 of multiple thickness, during the test not by replacement
The adjustment disk 19 of stack pile is tested to adjust the width in disk gap between fluid driving disk 9 and lower cover 19.
Embodiment 2
The present invention also provides a kind of band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial force testings
Method is filled using band return port disk Gap Annular Flow radial pressure flow resistance described in embodiment 1 and asymmetric axial force testing
It sets.
The test method specifically includes the following steps:
A, each component is attached by connection relationship described in embodiment 1；When static multi-axis force transducer 24 only by
Responsive to axial force, axial force measured by multi-axis force transducer 24 are seal cavity (cavity structure 7 and upper cover plate 26) and fluid
Drive the weight F1 of disk；
B, liquid is filled into closed chamber；
In the present embodiment, liquid directlys adopt water, energy conservation and environmental protection；
C, start external driver device, so that shaft 28 rotates, shaft 28 drives fluid driving disk and fluid isolation cover 2
It rotates together, fluid drives the rotation of disk 9 that the indoor liquid of closing chamber is driven to flow out from tap hole 18；
After 28 slow-roll stabilization of shaft, the revolving speed W of lower rotary shaft 28 is recorded；It records simultaneously, the torque of multi-axis force transducer 24
The numerical value G of measuring unit, the numerical value F2 of the axial force measuration unit of multi-axis force transducer 24, the number of pressure sensor in access aperture
Value P1, the numerical value P2 of pressure sensor on tap hole 18, the flow of flowmeter are Q, and the sectional area of access aperture is A, liquid it is close
Degree is ρ；
Thus it obtains, the asymmetric axial force generated with return port disk gap location is F1-F2, and resistance coefficient is
Further, the test method is further comprising the steps of:
D, driving device is controlled to change the revolving speed of the shaft, repeats step c, and obtain under different rotating speeds, band reflux
The asymmetric axial force and resistance coefficient that hole disk gap location generates.
Further, the test method is further comprising the steps of:
E, by adjust plug screw and pressure sensor setting position in different return ports 11 and plug screw it is logical
It is disconnected, step b-c or step b-d is repeated, the band return port disk under different reflux hole sites, under different reflux hole numbers is obtained
The asymmetric axial force and resistance coefficient that gap location generates.
Further, the test method is further comprising the steps of:
F, the adjustment disk 19 of different-thickness is replaced, step a-c or step a-d or step a-e is repeated, obtains different disks
Under gap, the asymmetric axial force and resistance coefficient that are generated with return port disk gap location.
In the present embodiment, step c, the revolving speed in d, e, f, gap width, reflux hole site and flow progress are no quantization
Processing, to promote usage range.
Those skilled in the art should be understood that the present invention can be implemented without departing from it with many other concrete forms
The spirit or scope of itself.Although case study on implementation of the invention has been described, it should be understood that the present invention should not be limited to these implementations
Example, those skilled in the art can make variation within the spirit and scope of the present invention as defined by the following claims
And modification.
Claims (18)
1. a kind of band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial-force testing device, which is characterized in that
Including upper end cover, lower cover, shell, shaft, the upper end cover, lower cover lid are located on the upper and lower end of the shell and form one
Closed chamber；A recessed portion is equipped at the lower cover upper end center, the lower end of the shaft is put in the recessed portion and shape
Gap is circularized, the middle part that the upper end of the shaft passes through the upper end cover is connect with external driver device；The shaft is opposite
It is rotated in the upper end cover and lower cover；
Fluid the driving disk, fluid isolation cover, seal cavity, multiaxis being set in the shaft are equipped in the closed chamber
Force snesor；The lower end surface one disk gap of formation opposite with the upper surface of the lower cover of the fluid driving disk；It is described
The lower end of seal cavity is fixedly connected with the upper end of fluid driving disk；The multi-axis force transducer is located at the seal chamber
In vivo, the multi-axis force transducer is fixedly connected with seal cavity and shaft；The fluid isolation the cover is located at the sealing
On cavity, and it is located above fluid driving disk, the fluid isolation cover is fixedly connected with the shaft；In the shaft
Torque on multi-axis force transducer comes solely from the fluid driving disk；
The access aperture communicated with the recessed portion is provided on the lower cover at center, the lower cover inner circumferential is evenly equipped with more
A tap hole is provided with the return port for being connected to the tap hole and the closed chamber on each tap hole；Liquid is described in
Access aperture enters in the closed chamber, then successively flows back from the return port, tap hole；The access aperture, outflow
It is provided with pressure sensor on hole, is additionally provided with flowmeter in the access aperture.
2. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 1 and asymmetric axial force testing dress
It sets, which is characterized in that be provided with bulge-structure on the fluid isolation cover lower ending opening, correspond to position on the fluid driving disk
The place of setting is provided with groove structure, and the bulge-structure injects in the groove structure, and fluid driving disk and the stream
There is no power transmitting between body isolation cover, between the bulge-structure and the groove structure.
3. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 1 and asymmetric axial force testing dress
It sets, which is characterized in that the seal cavity includes the cavity structure of a lower ending opening, and the cavity structure is set in described turn
On axis, and the lower end of the cavity structure and fluid driving disk are fixedly connected to form complete seal cavity.
4. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 3 and asymmetric axial force testing dress
It sets, which is characterized in that the seal cavity further includes a upper cover plate, and the upper cover plate is fixed on the outside of the cavity structure
Top, and the upper cover plate is set in the shaft.
5. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 3 and asymmetric axial force testing dress
It sets, which is characterized in that between the upper cover plate and the cavity structure, between the cavity structure and the fluid driving disk
It is provided with sealing ring.
6. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 4 and asymmetric axial force testing dress
It sets, which is characterized in that oil enveloping structure between the upper cover plate and the shaft.
7. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 1 and asymmetric axial force testing dress
It sets, which is characterized in that be provided with oil enveloping structure between the upper end cover, lower cover and the shaft.
8. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 1 and asymmetric axial force testing dress
Set, which is characterized in that the tap hole is arranged radially along the lower cover, and the outflow end of the tap hole be located at it is described under
The side of end cap；
Multiple return ports are provided on each tap hole, the return port is perpendicular to the tap hole, the return port
One end connect the tap hole, the other end extends to the upper surface of the lower cover.
9. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 8 and asymmetric axial force testing dress
It sets, which is characterized in that in multiple return ports, the outlet of one of them return port is provided with pressure sensing with respect to place
Device is provided with the plug screw of control on-off on remaining described return port.
10. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 9 and asymmetric axial force testing
Device, which is characterized in that the plug screw and the pressure sensor can be interchanged position and carry out installation settings.
11. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 10 and asymmetric axial force testing
Device, which is characterized in that be provided on the outer diameter of the plug screw for installation into the first screw thread on the lower cover, the pressure
It is provided on the outer diameter of force snesor for installation into the second screw thread on the lower cover, first screw thread and described second
Thread size, shape are identical.
12. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 1 and asymmetric axial force testing
Device, which is characterized in that be additionally provided on the inner surface of the lower cover one for adjust fluid driving disk with it is described
The adjustment disk of disk gap size between lower cover is provided with company with the return port corresponding position on the adjustment disk
Connect the through-hole of the return port and the closed chamber.
13. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 1 and asymmetric axial force testing
Device, which is characterized in that the multi-axis force transducer includes axial force measuration unit and torque measurement unit.
14. a kind of band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric shaft are to force test method, which is characterized in that
Using described in any one of claim 1-13 band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric shaft to
Force test device, comprising the following steps:
A, each component is attached with the connection relationship by claim 1；When static the multi-axis force transducer only by
Responsive to axial force, axial force measured by the multi-axis force transducer are the weight that the seal cavity and fluid drive disk
F1；
B, liquid is filled into the closed chamber；
C, start the external driver device, so that the shaft rotates, the shaft drives the fluid driving disk and stream
Body isolation cover rotates together, and the fluid driving disk rotational drives the indoor liquid of closing chamber from the tap hole stream
Out；
After the shaft slow-roll stabilization, its revolving speed W is recorded；It records simultaneously, the torque measurement list of the multi-axis force transducer
The numerical value G of member, the numerical value F2 of the axial force measuration unit of the multi-axis force transducer, the number of pressure sensor in the access aperture
Value P1, the numerical value P2 of pressure sensor on the tap hole, the flow of flowmeter are Q, and the sectional area of access aperture is A, liquid
Density is ρ；
Thus it obtains, the asymmetric axial force generated with return port disk gap location is F1-F2, and resistance coefficient is
15. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 14 and asymmetric axial force testing
Method, which is characterized in that further include:
D, driving device is controlled to change the revolving speed of the shaft, repeats step c, and obtain under different rotating speeds, band return port disk
The asymmetric axial force and resistance coefficient that face gap location generates.
16. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 14 and asymmetric axial force testing
Method, which is characterized in that be provided with multiple return ports on each tap hole, the outlet phase of one of them return port
Pressure sensor is provided with to place, the plug screw of control on-off is provided on remaining described return port；Test method further include:
E, by adjusting the on-off of the setting position and plug screw in different return ports of the plug screw and pressure sensor,
Step b-c is repeated, obtains under different reflux hole sites, under different reflux hole numbers, is generated with return port disk gap location
Asymmetric axial force and resistance coefficient.
17. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 14 and asymmetric axial force testing
Method, which is characterized in that be additionally provided on the inner surface of the lower cover one for adjust fluid driving disk with it is described
The adjustment disk of disk gap size between lower cover；Test method further include:
F, the adjustment disk of different-thickness is replaced, step a-c is repeated, obtains under different disk gaps, band return port disk
The asymmetric axial force and resistance coefficient that gap location generates.
18. band return port disk Gap Annular Flow radial pressure flow resistance according to claim 14 and asymmetric axial force testing
Method, which is characterized in that the liquid uses water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610139666.4A CN105784231B (en) | 2016-03-11 | 2016-03-11 | Band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial-force testing device and method |
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| CN201610139666.4A CN105784231B (en) | 2016-03-11 | 2016-03-11 | Band return port disk Gap Annular Flow radial pressure flow resistance and asymmetric axial-force testing device and method |
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| CN106950001B (en) * | 2017-02-16 | 2019-09-24 | 上海交通大学 | Shield electric machine flywheel can-like gap chamber drag torque decouples test device and method |
| CN107449386B (en) * | 2017-09-12 | 2019-07-26 | 上海联合滚动轴承有限公司 | A kind of verification method of double row tapered roller bearing symmetry |
| CN111441413B (en) * | 2020-04-02 | 2022-04-01 | 徐州徐工履带底盘有限公司 | Design method of excavator thrust wheel |
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| US3828610A (en) * | 1970-01-07 | 1974-08-13 | Judson S Swearingen | Thrust measurement |
| CN101846086B (en) * | 2010-06-03 | 2012-02-22 | 浙江大学 | Fluid test experimental device for centrifugal pump |
| CN102410234B (en) * | 2011-08-24 | 2015-10-14 | 上海交通大学 | Shielding generator rotor system hydraulic loss test platform and test method |
| CN102735422B (en) * | 2012-06-25 | 2015-07-01 | 上海交通大学 | Device for studying gap flow field of shielding sleeve of shielding motor |
| CN103452868B (en) * | 2013-08-02 | 2016-08-10 | 上海交通大学 | Vertical canned motor pump gap flowing test laboratory table |
| CN103940540B (en) * | 2014-04-14 | 2016-03-02 | 上海交通大学 | Protected type motor vertical wet rotor hydrodynamic axial-force testing device and method |
| CN104122069B (en) * | 2014-07-15 | 2017-06-13 | 上海交通大学 | A kind of asymmetric hydrodynamics axial force high-speed adjustment device of flywheel interstitial fluid |
| CN104390786B (en) * | 2014-12-04 | 2017-05-03 | 南京航空航天大学 | Test stand for measuring flow coefficient of small hole under rotation condition |
| CN104359679B (en) * | 2014-12-04 | 2017-01-18 | 南京航空航天大学 | Method for measuring micropore flow coefficient under rotating condition |
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