Shafting damping ring based on electromagnetic induction

Abstract

The application relates to a shaft system damping ring based on electromagnetic induction, belonging to the field of damping devices. The shaft system damping ring based on electromagnetic induction comprises an induction conductor, a core and a magnetic yoke which are sequentially sleeved on the outer wall of a shaft system from inside to outside, and a base for supporting the magnetic yoke, a plurality of longitudinal coil bases which are arranged along the length direction of the shaft system are arranged between the core and the magnetic yoke; one end of the induction conductor is connected with an induction ring, one end of the core close to the induction ring is connected with an iron ring, and a plurality of transverse coils which are arranged along the circumferential direction of the shaft system are arranged between the induction ring and the iron ring. The shaft system damping ring based on electromagnetic induction provided by the application can change the electromagnetic damping force in the axial and radial directions of the shaft system by adjusting the size and direction of the current in the longitudinal coil and the transverse coil, so that the peak value of the axial and radial vibration of the shaft system is inhibited, and the damage of the vibration of the shaft system to the equipment is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of damping devices, in particular to a shaft system damping ring based on electromagnetic induction. BACKGROUND

[0002] During operation, shaft system inevitably produces transverse and longitudinal vibration due to non-steady excitation, shaft system misalignment, uneven manufacturing material and other factors. Severe shaft system vibration is extremely harmful to equipment and can cause the following consequences: severe transverse vibration can lead to fatigue failure of the shaft, bearing wear, damage to the sealing device and local structure vibration; severe longitudinal vibration of the shaft system can cause very large bending stress and tensile stress on the crank pin, which can accelerate the wear of the gear teeth and cause additional alternating load on the bearing, affecting its service life. Therefore, shaft system vibration reduction and monitoring research has always been the focus of domestic and foreign research.

[0003] Currently, two methods are mainly used to reduce shaft system vibration: passive damping, such as using elastic coupling, damper and dynamic vibration absorber; and active damping, using electromagnetic actuators and magnetic bearings. Passive damping has been widely used and has achieved certain results, but its damping frequency band is fixed and its adaptability is not strong, and it cannot adapt to complex and variable shaft system operating environments. Active control technology for shaft system vibration is still in the principle research stage, and its effectiveness, safety and reliability have not been guaranteed. SUMMARY

[0004] The purpose of the present application is to provide a shaft system damping ring based on electromagnetic induction, which can change the electromagnetic damping force received by the shaft system in the axial and radial directions by adjusting the size and direction of the current in the longitudinal and transverse coils, thereby effectively reducing the damage of shaft system vibration to equipment.

[0005] The present application is achieved in the following way:

[0006] The present application provides a shaft system damping ring based on electromagnetic induction, which comprises an induction conductor, a core and a yoke, which are sequentially sleeved on the outer wall of the shaft system from the inside out, and a base for supporting the yoke. A plurality of longitudinal coil bases are arranged along the length direction of the shaft system between the core and the yoke. One end of the induction conductor is connected with an induction ring, and one end of the core close to the induction ring is connected with an iron ring. A plurality of transverse coils are arranged along the circumferential direction of the shaft system between the induction ring and the iron ring.

[0007] In some optional embodiments, the inner wall of the yoke is protruded to form a plurality of annular protruding rings arranged along the length direction of the shaft system. The yoke inner wall, the protruding rings and the core form a cavity for accommodating the longitudinal coils.

[0008] In some alternative embodiments, the outer wall of the iron ring is protruded to form a plurality of annular protrusions arranged along the circumference of the shafting.

[0009] In some alternative embodiments, the winding directions of two adjacent longitudinal coils are opposite.

[0010] In some alternative embodiments, the winding directions of two adjacent transverse coils are opposite.

[0011] In some alternative embodiments, the magnetic yoke is made of paramagnetic material.

[0012] The beneficial effects of the present application are: the electromagnetic induction based shafting damping ring provided by the present application comprises an induction conductor, an iron core and a magnetic yoke sequentially sleeved on the outer wall of the shafting from inside to outside, and a base for supporting the magnetic yoke, a plurality of longitudinal coil bases are arranged along the length direction of the shafting between the iron core and the magnetic yoke; one end of the induction conductor is connected with an induction ring, one end of the iron core close to the induction ring is connected with an iron ring, and a plurality of transverse coils are arranged along the circumference of the shafting between the induction ring and the iron ring. The electromagnetic induction based shafting damping ring provided by the present application can change the electromagnetic damping force received by the shafting in the axial and radial directions by adjusting the size and direction of the current in the longitudinal coil and the transverse coil, thereby effectively reducing the damage of shafting vibration to the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0014] Figure 1 The structure schematic diagram of the electromagnetic induction based shafting damping ring provided by the embodiments of the present application;

[0015] Figure 2 The structure schematic diagram of the electromagnetic induction based shafting damping ring provided by the embodiments of the present application;

[0016] Figure 3 The structure schematic diagram of the induction conductor of the electromagnetic induction based shafting damping ring provided by the embodiments of the present application;

[0017] Figure 4 The structure schematic diagram of the iron core of the electromagnetic induction based shafting damping ring provided by the embodiments of the present application;

[0018] Figure 5A cross-sectional structure schematic diagram of a magnetic yoke of a shaft system damping ring based on electromagnetic induction is provided for the embodiment of the present application.

[0019] In the figure: 100, base; 110, induction conductor; 111, induction ring; 120, iron core; 121, iron ring; 122, protruding block; 130, magnetic yoke; 131, protruding ring; 140, longitudinal coil; 150, transverse coil; 200, shaft system; 210, bearing seat. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0022] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the application, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0026] In this application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] The features and performance of the electromagnetic induction based shafting damping ring of the application are further described in detail below in combination with embodiments.

[0028] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , the embodiment of the application provides an electromagnetic induction based shafting damping ring for damping treatment of a shafting 200 rotatably penetrating two bearing seats 210 at both ends; the electromagnetic induction based shafting damping ring comprises a cylindrical induction conductor 110 sleeved on the shafting 200, a cylindrical iron core 120 sleeved on the outer wall of the induction conductor 110, a cylindrical magnetic yoke 130 sleeved on the outer wall of the iron core 120, and a base 100 at the top for supporting the magnetic yoke 130, the magnetic yoke 130 is made of paramagnetic material, the inner wall of the magnetic yoke 130 is protruded to form eight annular protruding rings 131 arranged at intervals along the length direction of the shafting 200, seven annular first cavities are respectively formed between the inner wall of the magnetic yoke 130, the eight protruding rings 131 and the outer wall of the iron core 120, one longitudinal coil 140 is wound in each first cavity, and the winding directions of two adjacent longitudinal coils 140 are opposite.

[0029] One end of the induction conductor 110 is connected with the induction ring 111 abutting against one end surface of the magnetic yoke 130, and one end of the iron core 120 close to the induction ring 111 is connected with the iron ring 121, the outer wall of the iron ring 121 is protruded to form eight annular protrusions 122 arranged along the circumference of the shaft system 200, and eight second cavity of fan ring shape are formed between the outer wall of the iron ring 121, the protrusions 122 and the induction ring 111, and one transverse coil 150 is arranged in each second cavity.

[0030] The shaft system damping ring based on electromagnetic induction provided by the embodiment of the application is characterized in that the induction conductor 110, the iron core 120 and the magnetic yoke 130 are sequentially sleeved on the outer wall of the shaft system 200 from inside to outside, the longitudinal coil 140 is arranged between the magnetic yoke 130 and the iron core 120 and arranged along the axial direction of the shaft system 200, the transverse coil 150 is arranged between the induction ring 111 connected with one end of the induction conductor 110 and the iron ring 121 connected with one end of the iron core 120 and arranged along the circumferential direction of the shaft system 200, according to Ampere's rule, the longitudinal coil 140 generates a radial magnetic field along the shaft system 200 when energized, and the transverse coil 150 generates a magnetic field along the axial direction of the shaft system 200 when energized, when the shaft system 200 vibrates along the axial direction and the longitudinal direction, the induction conductor 110 cuts the magnetic field generated by the longitudinal coil 140, and the induction eddy current is formed in the induction conductor 110, and the Ampere force of the induction eddy current in the magnetic field hinders the longitudinal vibration of the shaft system 200; similarly, when the shaft system 200 vibrates transversely, the induction ring 111 at one end of the induction conductor 110 cuts the magnetic field generated by the transverse coil 150, and the induction eddy current is also formed in the induction conductor 110 to hinder the transverse vibration of the shaft system 200, so that when the shaft system 200 vibrates during operation, the electromagnetic damping force generated by the magnetic field of the longitudinal coil 140 and the transverse coil 150 effectively suppresses the transverse and longitudinal vibration amplitude of the shaft system 200, and reduces the damage of the vibration of the shaft system 200 to the equipment.

[0031] The first cavity formed between the inner wall of the magnetic yoke 130, the protrusion 131 and the outer wall of the iron core 120 is wound with the longitudinal coil 140, and the second cavity formed between the outer wall of the iron ring 121, the protrusion 122 and the induction ring 111 is wound with the transverse coil 150, the protrusion 131 is used to form a sawtooth-shaped space in the inner wall of the magnetic yoke 130 to accommodate the alternately wound longitudinal coil 140, and the protrusion 122 is used to separate the fan ring-shaped space formed by the outer wall of the iron ring 121 to accommodate the alternately wound transverse coil 150, so that a stronger magnetic field is formed in a limited space, and a large damping force is generated by a small driving current.

[0032] The embodiments described above are only part of the embodiments of the present application, rather than all the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

Claims

1. A shaft damping ring based on electromagnetic induction, characterized in that, It includes an induction conductor, an iron core, and a magnetic yoke, which are sequentially sleeved on the outer wall of the shaft system from the inside to the outside, and a base for supporting the magnetic yoke. A plurality of longitudinal coils are arranged at intervals along the length of the shaft system between the iron core and the magnetic yoke. One end of the induction conductor is connected to an induction ring, and the end of the iron core near the induction ring is connected to an iron ring. A plurality of transverse coils are arranged at intervals along the circumference of the shaft system between the induction ring and the iron ring. The outer wall of the iron ring protrudes to form a plurality of annular protrusions arranged at intervals along the circumference of the shaft system. The outer wall of the iron ring, the protrusions, and the induction ring enclose a cavity to accommodate the transverse coils.

2. The shaft damping ring based on electromagnetic induction according to claim 1, characterized in that, The inner wall of the magnetic yoke has protrusions that form multiple annular protrusions spaced apart along the length of the axis. The inner wall of the magnetic yoke, the protrusions, and the iron core together form a cavity to accommodate the longitudinal coil.

3. The shaft damping ring based on electromagnetic induction according to claim 1, characterized in that, The two adjacent longitudinal coils are wound in opposite directions.

4. The shaft damping ring based on electromagnetic induction according to claim 1, characterized in that, The two adjacent transverse coils are wound in opposite directions.

5. The shaft damping ring based on electromagnetic induction according to claim 1, characterized in that, The magnetic yoke is made of a paramagnetic material.

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