CN211426531U - Rotating speed testing device of rotor system, air compressor and vehicle - Google Patents
Rotating speed testing device of rotor system, air compressor and vehicle Download PDFInfo
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- CN211426531U CN211426531U CN202020126933.6U CN202020126933U CN211426531U CN 211426531 U CN211426531 U CN 211426531U CN 202020126933 U CN202020126933 U CN 202020126933U CN 211426531 U CN211426531 U CN 211426531U
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Abstract
The utility model discloses a rotor system's rotational speed testing arrangement, air compressor and vehicle. This rotational speed testing arrangement of rotor system includes: a rotor shaft and a cover plate; the connecting sleeve is sleeved at one end, facing the cover plate, of the rotor shaft; the magnetic part is arranged at one end, facing the cover plate, of the connecting sleeve and is perpendicular to the central axis of the rotor shaft; a position sensing assembly for sensing the magnetic member, the position sensing assembly being mounted to the cover plate and spaced apart from the magnetic member; and the controller is in communication connection with the position detection assembly. According to the utility model discloses a rotor system's rotational speed testing arrangement can satisfy super high rotational speed's detection requirement, and is little to rotor dynamic balance's influence to the replacement cost is low.
Description
Technical Field
The utility model relates to a rotor system field particularly, relates to a rotor system's rotational speed testing arrangement, has rotor system's rotational speed testing arrangement's air compressor with have air compressor's vehicle.
Background
In the related art, in order to detect the speed and phase change of the rotor system of the fuel cell air compressor at a high rotation speed, a magnetic assembly, a circuit board fixed magnetic assembly and a housing are combined together. Specifically, the shell is nested on the target object, so that the target object drives the magnetic assembly to rotate; the magnetic component provides a trigger magnetic field for the circuit board; the circuit board outputs a square wave signal according to the trigger magnetic field and sends the square wave signal to the controller, so that the controller detects the rotating direction and the speed of the target object through the square wave signal.
However, since the magnets of the magnetic assembly are fixed in the plastic housing, the following problems occur when the detection device is fixed on the rotor system of the high-speed fuel cell air compressor:
1. under the ultrahigh rotating speed, the plastic shell has the risk of cracking and cannot meet the detection requirement of the ultrahigh rotating speed;
2. the whole detection device is arranged on the rotor shaft, and because the mass distribution is uneven, the influence of unbalanced mass on dynamic balance and weight removal is large under ultrahigh rotating speed, and the dynamic balance of the rotor can be damaged to a certain extent;
3. since the magnetic assembly is integrally mounted in the housing, the size is fixed, and thus the cost for changing the overall size is increased.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a rotational speed testing arrangement of rotor system to satisfy the detection requirement of super high rotational speed, reduce the influence to rotor dynamic balance, and reduce the replacement cost.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a rotational speed testing apparatus of a rotor system, comprising: a rotor shaft and a cover plate; the connecting sleeve is sleeved at one end, facing the cover plate, of the rotor shaft; the magnetic part is arranged at one end, facing the cover plate, of the connecting sleeve and is perpendicular to the central axis of the rotor shaft; a position sensing assembly for sensing the magnetic member, the position sensing assembly being mounted to the cover plate and spaced apart from the magnetic member; and the controller is in communication connection with the position detection assembly.
According to some embodiments of the present invention, the magnetic member is a plurality of, a plurality of the magnetic member is distributed in the same plane and is symmetrically distributed about the central axis of the rotor shaft.
According to some embodiments of the utility model, the orientation of adapter sleeve the one end of apron has the mounting groove, the magnetism spare is installed in the mounting groove.
In some embodiments of the present invention, the magnetic member is in clearance fit with the connecting sleeve.
According to some embodiments of the utility model, the adapter sleeve is magnetic conduction spare.
According to some embodiments of the utility model, the position detection subassembly with be equipped with the insulating part between the apron.
According to the utility model discloses a some embodiments, the central axis of rotor shaft the central axis of apron the central axis of adapter sleeve the central axis coincidence of magnetic part, the magnetic part with position detection subassembly is in just right in the axial of rotor shaft.
Compared with the prior art, rotor system's rotational speed testing arrangement have following advantage:
the utility model discloses a rotational speed testing arrangement of rotor system, through with magnetic part and position detection subassembly non-contact setting, can reduce the unbalance amount of rotor system under the rotor system ultrahigh rotational speed, reduced the dynamic balance inefficacy's of rotor system under ultrahigh rotational speed possibility, and can not lead to the intensity of position detection subassembly to destroy the inefficacy because of the intensity problem under the ultrahigh rotational speed, the structural strength inefficacy possibility of position detection subassembly reduces thereupon, thereby can detect the speed and the phase change of fuel cell air compressor machine system under ultrahigh rotational speed; the specification of the position detection assembly can be changed by changing the size of the magnetic part, so that the applicability is wide and the replacement cost is low.
Another object of the utility model is to provide an air compressor to satisfy super high rotational speed's detection requirement, reduce the influence to rotor dynamic balance, and reduce the replacement cost.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
an air compressor comprises the rotating speed testing device of the rotor system.
Compared with the prior art, the air compressor of the utility model has the following advantages:
the air compressor of the utility model, through setting up magnetic part and position detection assembly non-contact, can reduce the unbalance amount of the rotor system under the ultra-high rotational speed of the rotor system, has reduced the possibility that the dynamic balance of the rotor system fails under the ultra-high rotational speed, and can not cause the intensity of the position detection assembly to destroy and lose efficacy because of the intensity problem under the ultra-high rotational speed, the structural strength of the position detection assembly fails the possibility and reduces thereupon, thus can detect the speed and phase change of the fuel cell air compressor system under the ultra-high rotational speed; the specification of the position detection assembly can be changed by changing the size of the magnetic part, so that the applicability is wide and the replacement cost is low.
Another object of the utility model is to provide a vehicle to satisfy super high rotational speed's detection requirement, reduce the influence to rotor dynamic balance, and reduce the replacement cost.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a vehicle comprises the air compressor.
Compared with the prior art, the vehicle of the utility model has the following advantages:
the vehicle of the utility model, through setting up magnetic part and position detection subassembly non-contact, can reduce the unbalance amount of the rotor system under the super high rotational speed of rotor system, has reduced the possibility that the dynamic balance of the rotor system fails under the super high rotational speed, and can not cause the intensity of the position detection subassembly to destroy and become invalid because of the intensity problem under the super high rotational speed, the structural strength of the position detection subassembly is out of order the possibility and is reduced thereupon, thus can detect the speed and phase change of fuel cell air compressor system under the super high rotational speed; the specification of the position detection assembly can be changed by changing the size of the magnetic part, so that the applicability is wide and the replacement cost is low.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of a rotational speed testing apparatus of a rotor system according to an embodiment of the present invention;
fig. 2 is a schematic view of a magnetizing manner of the magnetic member according to the embodiment of the present invention;
fig. 3 is a schematic view of a magnetizing manner of the magnetic member according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a magnetic member according to an embodiment of the present invention.
Description of reference numerals:
the device comprises a rotating speed testing device 1 of a rotor system, a rotor shaft 10, a cover plate 20, a wire harness connector 21, a connecting sleeve 30, a mounting groove 31, a magnetic part 40, a circuit board 50, a resistor capacitor 51, a position detecting part 60, a controller 70, an insulating part 80 and a wire harness 90.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail with reference to fig. 1 to 4 in conjunction with the embodiments.
Referring to fig. 1 to 4, a rotation speed testing apparatus 1 of a rotor system according to an embodiment of the present invention includes: rotor shaft 10, cover plate 20, connecting sleeve 30, magnetic member 40, position detection assembly and controller 70.
Specifically, the cover plate 20 may be located at the rear side of the rotor shaft 10. The connecting sleeve 30 is fitted over an end (e.g., a rear end) of the rotor shaft 10 facing the cover plate 20. The magnetic member 40 is installed at an end (e.g., a rear end) of the connection sleeve 30 facing the cover plate 20, and the magnetic member 40 is disposed perpendicular to a central axis of the rotor shaft 10. For example, the magnetic member 40 is a circular magnet, and the central axis of the magnetic member 40 is parallel to the central axis of the connection sleeve 30.
The position detecting assembly is used for sensing the magnetic member 40, for example, the position detecting assembly includes a circuit board 50 and a position detecting member 60, the circuit board 50 is mounted on the cover plate 20, the position detecting member 60 is disposed on a side (e.g., a front side) of the cover plate 20 facing the magnetic member 40, and the position detecting member 60 is spaced apart from the magnetic member 40. That is, the position detecting member 60 is located between the magnetic member 40 and the cover plate 20 in the front-rear direction, and the position detecting member 60 is not in contact with the magnetic member 40. The position sensing member 60 is communicatively coupled to the circuit board 50, and the controller 70 is communicatively coupled to the circuit board 50. In this way, the magnetic member 40, the position detecting member 60 and the circuit board 50 are in non-contact connection, and the conversion from the magnetic signal to the electrical signal can be realized: the position detecting member 60 receives the magnetic signal of the magnetic member 40 and transmits the magnetic signal to the circuit board 50, and the circuit board 50 converts the magnetic signal into an electric signal and outputs the electric signal to the controller 70. For example, the position detecting member 60 may be a sensor chip.
Therefore, according to the utility model discloses a rotational speed testing arrangement 1 of rotor system, through with magnetic member 40 and position detection piece 60 and circuit board 50 non-contact setting, be about to magnetic member 40 and position detection piece 60 and circuit board 50 separate to the problem of the rotor system rotational speed measurement difficulty under super high rotational speed (for example 160000rpm) of electron booster has been solved: only the magnetic part 40 is fixedly assembled on the connecting sleeve 30 and rotates along with the rotor shaft 10, the unbalance amount of the rotor system can be reduced under the ultrahigh rotating speed of the rotor system, the possibility of dynamic balance failure of the rotor system under the ultrahigh rotating speed is reduced, the strength of the position detection part 60 cannot be damaged and failed due to strength problems under the ultrahigh rotating speed, the possibility of structural strength failure of the position detection part 60 is reduced, and therefore the speed and phase change of the fuel cell air compressor system under the ultrahigh rotating speed can be detected; the specification of the position detection piece 60 can be changed by changing the size of the magnetic piece 40, so that the applicability is wide and the replacement cost is low.
According to some embodiments of the present invention, the connecting sleeve 30 may be a magnetic conductive member. For example, the connecting sleeve 30 can be made of a ferrous material, so that certain strength and rigidity can be ensured, the design requirement of an air compressor with high power can be met, and the cost is low.
According to some embodiments of the present invention, as shown in fig. 3 and 4, the magnetic members 40 may be plural, the plural magnetic members 40 are distributed in the same plane, and the plural magnetic members 40 are uniformly distributed along the circumference of the connecting sleeve 30. For example, the magnetic members 40 are arranged parallel to the cross section of the connecting sleeve 30, and a plurality of magnetic members 40 may be uniformly spaced along the circumferential direction of the connecting sleeve 30 to ensure that the mass of the magnetic members 40 is uniformly distributed in the circumferential direction of the rotor shaft 10. Thus, the plurality of magnetic members 40 are combined into the planar integrated magnet assembly to complete axial magnetization, so that the number of magnetic induction lines entering the connecting sleeve 30 is small, most of magnetic signals can be normally transmitted to the circuit board 50, and the loss of the magnetic signals is reduced. It is understood that the plurality of magnetic members 40 have the same dimensional specifications as each other in order to reduce the influence on the dynamic balance of the rotor system.
Alternatively, as shown in fig. 4, the magnetic members 40 are shaped to be symmetrically disposed on the distribution plane thereof. For example, the plurality of magnetic members 40 are symmetrically distributed about the central axis of the rotor shaft 10, thereby ensuring a uniform distribution of the mass of the magnetic members 40.
Further, as shown in fig. 4, a plurality of magnetic members 40 may be spliced into a circular shape. That is, the plurality of magnetic members 40 may be collectively formed in a circular shape, thereby facilitating installation and ensuring uniform mass distribution. For example, two semicircular magnets of the same size make up a complete circle.
According to some embodiments of the present invention, as shown in fig. 1 to 3, one end of the connection sleeve 30 facing the cover plate 20 has a mounting groove 31, for example, the mounting groove 31 penetrates through the outer circumferential surface and the end surface of the connection sleeve 30, respectively, and the magnetic member 40 is mounted in the mounting groove 31. Thus, the structural strength of the whole rotor system is ensured, and the magnetic member 40 can rotate at a high speed along with the rotor system. For example, the magnetic member 40 may be fixed in the installation groove 31 by glue, so that the structure is more secure.
In some embodiments of the present invention, the magnetic member 40 may be clearance-fitted to the connection sleeve 30 to prevent the magnet from being broken and lost of efficacy due to centrifugal force during the high-speed rotation.
According to some embodiments of the present invention, as shown in fig. 1, the circuit board 50 is mounted on a surface of the cover plate 20 facing the magnetic member 40 (e.g., front side), and the position detecting member 60 is mounted on a surface of the circuit board 50 facing the magnetic member 40 (e.g., front side). In this way, the detection of the rotational speed and the signal transmission are facilitated. The cover plate 20 may be an insulating member 80, so as to be safe and reliable.
Of course, the cover plate 20 may be an aluminum alloy member. According to some embodiments of the present invention, as shown in fig. 1, an insulating member 80 may be provided between the circuit board 50 and the cover plate 20, thereby ensuring electrical insulation.
According to some embodiments of the present invention, as shown in fig. 1, the controller 70 is located on a side (e.g., a rear side) of the cover plate 20 facing away from the magnetic member 40, the side of the cover plate 20 facing away from the magnetic member 40 is provided with a wire harness connector 21, and the cover plate 20 has a wire passing hole communicated with the wire harness connector 21. In this way, the wire harness connector 21 is used for installing the wire harness 90, and the wire harness 90 passes through the wire harness connector 21 and the wire passing hole, so that the wired connection between the controller 70 and the circuit board 50 is realized, and the structure is more reliable. Wherein, the wire harness connector 21 and the cover plate 20 can be connected by screw thread.
According to some embodiments of the present invention, as shown in fig. 1, the central axis of the rotor shaft 10, the central axis of the cover plate 20, the central axis of the connecting sleeve 30, and the central axis of the magnetic member 40 coincide with each other, and the magnetic member 40 and the position detecting member 60 are aligned in the axial direction of the rotor shaft 10, so that the influence on the rotor system rotation balance can be further reduced, and the detection accuracy is ensured.
A rotation speed testing apparatus 1 of a rotor system according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.
The connection sleeve 30 is a nut that is fitted on the rotor shaft 10 by being engaged with a thread on the rotor shaft 10 to be synchronously rotated at a high speed with the rotor shaft 10. The circuit board 50 includes a logic control circuit and a resistance-capacitance 51, and the logic control circuit and the resistance-capacitance 51 work together to convert the magnetic signal into an electric signal. The insulating member 80 separates the circuit board 50 from the cover plate 20, and the circuit board 50 and the position detecting member 60 are integrated with the cover plate 20 to fix and support the circuit board 50 and the position detecting member 60.
The magnetic member 40 rotates at a high speed along with the rotor system to generate a rotating magnetic field, the magnetic signal reaches the position detecting member 60 and is converted into an electrical signal by the circuit board 50, and the position detecting member 60 outputs a sinusoidal signal every time the connecting sleeve 30 rotates one revolution. The wire harness 90 is used for transmitting output electric signals, the output end of the wire harness 90 is connected with the controller 70, the circuit board 50 sends the electric signals to the controller 70, and the controller 70 obtains the speed and phase change of the rotor system through processing the electric signals.
Therefore, the plurality of magnetic parts 40 are designed into a planar integrated combination, an axial magnetizing mode is realized, and the magnetic parts 40 are installed in the installation groove 31, so that the loss of magnetic signals is reduced, the conversion from the magnetic signals to electric signals is facilitated, the signal interference is reduced, and the detection on the speed and phase change of the rotor system is better realized.
According to the utility model discloses air compressor, including foretell rotor system's rotational speed testing arrangement 1.
According to the air compressor provided by the embodiment of the utility model, through the non-contact arrangement of the magnetic part 40 and the position detection component, the unbalance amount of the rotor system can be reduced under the ultrahigh rotating speed of the rotor system, the possibility of failure of the dynamic balance of the rotor system under the ultrahigh rotating speed is reduced, the strength damage failure of the position detection component can not be caused by the strength problem under the ultrahigh rotating speed, the possibility of failure of the structural strength of the position detection component is reduced, and therefore the speed and phase change of the fuel cell air compressor system under the ultrahigh rotating speed can be detected; the specification of the position detection assembly can be changed by changing the size of the magnetic part 40, so that the applicability is wide and the replacement cost is low.
According to the utility model discloses vehicle, including foretell air compressor.
According to the embodiment of the utility model, through with magnetic part 40 and position detection subassembly non-contact setting, can reduce rotor system's unbalance amount under rotor system ultrahigh speed, reduced rotor system dynamic balance inefficacy's under ultrahigh speed possibility, and can not lead to the strength destruction of position detection subassembly to become invalid because of the intensity problem under ultrahigh speed, the structural strength inefficacy possibility of position detection subassembly reduces thereupon, thereby can detect the speed and the phase change of fuel cell air compressor system under ultrahigh speed; the specification of the position detection assembly can be changed by changing the size of the magnetic part 40, so that the applicability is wide and the replacement cost is low.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A rotational speed testing device (1) of a rotor system, characterized by comprising:
a rotor shaft (10) and a cover plate (20);
the connecting sleeve (30) is sleeved at one end, facing the cover plate (20), of the rotor shaft (10);
the magnetic part (40) is mounted at one end of the connecting sleeve (30) facing the cover plate (20), and the magnetic part (40) is perpendicular to the central axis of the rotor shaft (10);
a position sensing assembly for sensing the magnetic member (40), the position sensing assembly being mounted to the cover plate (20) and spaced apart from the magnetic member (40);
a controller (70), the controller (70) communicatively coupled to the position sensing assembly.
2. The device (1) for testing the rotational speed of a rotor system according to claim 1, wherein the magnetic member (40) is a plurality of magnetic members, and the plurality of magnetic members (40) are distributed in the same plane.
3. Rotational speed testing device (1) of a rotor system according to claim 2, characterized in that a plurality of magnetic elements (40) are symmetrically distributed about the central axis of the rotor shaft (10).
4. Rotational speed testing device (1) of a rotor system according to claim 1, characterized in that the connecting sleeve (30) has a mounting groove (31) at its end facing the cover plate (20), and the magnetic member (40) is mounted in the mounting groove (31).
5. Rotational speed testing device (1) of a rotor system according to claim 4, characterized in that the magnetic element (40) is clearance fitted with the connection sleeve (30).
6. The rotational speed testing device (1) of a rotor system according to claim 1, characterized in that the connecting sleeve (30) is a magnetically conductive member.
7. Rotational speed testing device (1) of a rotor system according to claim 1, characterized in that an insulation (80) is provided between the position detection assembly and the cover plate (20).
8. The rotational speed testing device (1) of a rotor system according to claim 1, wherein the central axis of the rotor shaft (10), the central axis of the cover plate (20), the central axis of the connecting sleeve (30) and the central axis of the magnetic member (40) coincide, and the magnetic member (40) and the position detecting assembly are opposite in the axial direction of the rotor shaft (10).
9. An air compressor, characterized by comprising a rotational speed testing device of the rotor system of any one of claims 1 to 8.
10. A vehicle, characterized in that the air compressor of claim 9 is mounted on the vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020126933.6U CN211426531U (en) | 2020-01-20 | 2020-01-20 | Rotating speed testing device of rotor system, air compressor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020126933.6U CN211426531U (en) | 2020-01-20 | 2020-01-20 | Rotating speed testing device of rotor system, air compressor and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211426531U true CN211426531U (en) | 2020-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020126933.6U Active CN211426531U (en) | 2020-01-20 | 2020-01-20 | Rotating speed testing device of rotor system, air compressor and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211426531U (en) |
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2020
- 2020-01-20 CN CN202020126933.6U patent/CN211426531U/en active Active
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