CN118117843A - Strong cooling type multi-cylinder permanent magnet speed regulator - Google Patents

Abstract

The invention relates to a strong cooling type multi-cylinder permanent magnet speed regulator, which comprises: the permanent magnet rotor assembly comprises a driven disc, a magnetic carrying ring is connected to the driven disc, and the conductor rotor assembly comprises a driving disc; the driving disc is connected with a conductor ring; an air gap is arranged between the magnetic carrier ring and the conductor ring; the driving disc is provided with a plurality of fan blades; the driving disc is provided with a plurality of first air inlet through holes, and the driven disc is provided with a plurality of second air inlet through holes; the conductor ring is provided with a first heat dissipation through hole, and the magnetic carrier ring is provided with a second heat dissipation through hole. After adopting above-mentioned structure, its beneficial effect is: 70% of cooling air can be lifted during speed regulation, and the conductor rings and the magnetic carrier rings are more densely arranged; the multi-cylinder structure formed by the conductor ring and the magnetic carrying ring is used, more force transmission surfaces are additionally arranged in a limited space range, the structure of the device is simplified, the device is smaller and more simplified, and the cost performance is improved.

Description

Strong cooling type multi-cylinder permanent magnet speed regulator

Technical Field

The invention belongs to the technical field of permanent magnet speed regulators, and particularly relates to a strong cooling type multi-cylinder permanent magnet speed regulator.

Background

The permanent magnet rotor of the common cylinder type permanent magnet speed regulator adopts a single magnetic ring structure, and the outer side or the inner side of the magnetic ring is a conductor ring; or the permanent magnet rotor is a double magnetic ring, and the conductor ring is clamped between the double magnetic rings; the disadvantage of this construction is the poor utilization of the magnets, which results in a relatively large volume of the governor.

The permanent magnet rotor of another common cylinder type permanent magnet speed regulator adopts a single magnetic ring structure, conductor rings are arranged on two sides of a magnetic ring, a plurality of cooling fins are arranged on the other side of the conductor rings, and the permanent magnet rotor is arranged at an input end or an output end; although the magnet is fully utilized in the structure, the arrangement of the radiating fins causes particularly large noise; when the permanent magnet rotor is positioned at the input end and the rotating speed of the output end is low, the convection heat exchange effect is greatly reduced, so that the temperature between the magnetic ring and the conductor ring is greatly increased, and the use is influenced.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides the strong-cooling type multi-cylinder permanent magnet speed regulator which is simple in structure, firm in installation and good in heat dissipation effect.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

as one aspect of the present invention, there is provided a strong cooling type multi-cylinder permanent magnet speed governor, comprising: the permanent magnet rotor assembly comprises a driven disc, wherein at least two magnetic carrying rings are connected to the driven disc, and each magnetic carrying ring is provided with a first magnetic carrying ring surface and a second magnetic carrying ring surface;

The conductor rotor assembly comprises a driving disc, wherein the driving disc is positioned on the other side of the driven disc; the driving disc is connected with a conductor ring; the number of the conductor rings corresponds to the number of the magnetic carrying rings; the conductor ring is provided with a first conductor ring surface and a second conductor ring surface which are respectively opposite to the first magnetic carrier ring surface and the second magnetic carrier ring surface of the magnetic carrier ring; air gaps are respectively arranged between the first magnetic carrier ring surface and the first conductor ring surface and between the second magnetic carrier ring surface and the second conductor ring surface; the driving disc is provided with a plurality of fan blades;

The driving disc is provided with a plurality of first air inlet through holes, and the driven disc is provided with a plurality of second air inlet through holes; at least one first heat dissipation through hole is formed in the conductor ring, and at least one second heat dissipation through hole is formed in the magnetic carrier ring.

Optionally, a plurality of annular heat dissipation grooves are formed in the side wall, connected with the conductor ring, of the driving disc.

Optionally, the first air inlet through hole is horizontally arranged, and/or the second air inlet through hole is horizontally arranged.

Alternatively, the first heat dissipation through hole and the second heat dissipation through hole are respectively arranged perpendicular to the horizontal line.

Optionally, the magnetic carrier ring comprises a magnetic carrier ring body, wherein a plurality of magnet mounting grooves are formed in the magnetic carrier ring body in an annular array, magnets are connected in the magnet mounting grooves, and magnetic poles of two adjacent magnets are oppositely arranged.

Alternatively, the two sides in the magnet mounting groove are respectively provided with a limit groove, the two sides of the magnet are respectively provided with a protruding part matched with the corresponding limit groove, and when the magnet is connected in the magnet mounting groove, the protruding part is connected with the corresponding limit groove.

Optionally, the device further comprises an adjusting mechanism, wherein the adjusting mechanism is used for adjusting the meshing area of magnetic induction between the conductor ring and the magnetic carrier ring; the adjusting mechanism comprises a bearing seat supporting assembly and a driving unit, wherein the bearing seat supporting assembly comprises an extending shaft matched with the driving disc, and the extending shaft penetrates through the driving disc; the central line of the extension shaft coincides with the central line of the output shaft; the shaft sleeve is sleeved on the extension shaft and moves along the axial direction of the extension shaft; one end of the shaft sleeve is fixedly connected with the driving disc; the shaft sleeve is connected with a bearing outer cylinder through a bearing, and the shaft sleeve can rotate relative to the bearing outer cylinder through a bearing; the driving unit is connected with the bearing outer cylinder.

Optionally, a bearing end cover is arranged at the end part of the bearing outer cylinder, and the bearing end cover covers the bearing; and oil seals are respectively arranged at the joints of the bearing end cover and the bearing outer cylinder and the shaft sleeve.

Optionally, the driving disc is connected with a guide post, and the extension shaft is provided with a sliding sleeve matched with the guide post.

The strong cooling type multi-cylinder permanent magnet speed regulator has the beneficial effects that: 1. the conductor rotor assembly is connected with an input shaft of the power equipment, the speed is always at the maximum rotating speed, the convective heat exchange effect is maintained at the maximum point, and the cooling is optimized; the cooling wind speed is improved, and the heat dissipation effect is better; 2. compared with the prior art, 70% of cooling air can be lifted when the effective maximum slip is 30% for speed regulation, and the conductor rings and the magnetic carrier rings can be more densely arranged; the multi-cylinder structure formed by the conductor ring and the magnetic carrying ring is used, more force transmission surfaces are additionally arranged in a limited space range, the structure of the device is simplified, the device is smaller and more simplified, and the cost performance is improved; 3. the design of a plurality of annular radiating grooves increases the radiating area, reduces the turbulence of gas and reduces noise compared with the traditional method for installing radiating fins; the heat dissipation area is increased, so that the influence on the heat dissipation effect is not great; 4. the multi-cylinder structure formed by the plurality of conductor rings and the magnetic carrying rings is adopted, and cylinders with different specifications can be freely combined according to the transmission moment and flexibly configured for the equipment power; the increase of the force transmission surface, the multi-cylinder structure with the same torque has smaller volume than the prior structure.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.

FIG. 1 is a schematic diagram of a strong cooling multi-cylinder permanent magnet speed governor according to the present invention;

FIG. 2 is a schematic diagram of a magnetic carrier ring according to the present invention;

FIG. 3 is a schematic view of a heat dissipation flow path of the strong cooling multi-cylinder permanent magnet speed governor of the present invention;

fig. 4 is a schematic diagram of another structure of the driving unit of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

An embodiment of the present application is a strong cooling type multi-cylinder permanent magnet speed governor, as shown in fig. 1-2, comprising: the permanent magnet rotor assembly 1 and the conductor rotor assembly 2 matched with the permanent magnet rotor assembly 1, wherein the permanent magnet rotor assembly 1 comprises a driven disc 11, a hub 12 used for being connected with an output shaft is connected to the middle part of one side of the driven disc 11, the hub 12 is a flange with a hollow structure in the middle and used for being connected with the output shaft, and the output shaft is the input shaft of a load; the hub 12 is connected with a second expansion sleeve 14 so as to be convenient for connection with an input shaft of a load; at least two magnetic carrier rings 15 are connected to the driven plate 11 through bolts, and it should be noted that the number of the magnetic carrier rings 15 is two or more, so as to design the number in actual need; each magnetic carrier ring 15 is provided with a first magnetic carrier ring surface close to the center of the driven disc 11 and a second magnetic carrier ring surface far away from the center of the driven disc 11, and the number of the magnetic carrier rings can be matched according to different power combinations;

The magnetic carrier ring 15 comprises a magnetic carrier ring body 153, wherein a plurality of magnet mounting grooves 154 are formed in the magnetic carrier ring body 153 in an annular array, magnets 155 are connected in the magnet mounting grooves 154, and magnetic poles of two adjacent magnets 155 are oppositely arranged; limiting grooves 156 are formed on two sides in the magnet mounting groove 154 respectively, protruding portions 157 matched with the corresponding limiting grooves 156 are formed on two sides of the magnet 155 respectively, when the magnet 155 is connected in the magnet mounting groove 154, the protruding portions 157 are connected with the corresponding limiting grooves 156, the magnet 155 is firmly mounted, and the problem that the magnet 155 is separated due to high rotating speed is avoided;

The conductor rotor assembly 2 is connected with an input shaft of the power equipment; the conductor rotor assembly 2 comprises a driving disc 21, the driving disc 21 being positioned on the other side of the driven disc 11; the center line of the driving disc 21 coincides with the center line of the driven disc 11; the driving disc 21 is connected with conductor rings 23, and the number of the conductor rings 23 corresponds to the number of the magnetic carrying rings 15; the conductor ring 23 is provided with a first conductor ring surface and a second conductor ring surface which are respectively opposite to the first carrier ring surface and the second carrier ring surface of the carrier ring 15; air gaps are respectively arranged between the first magnetic carrier ring surface and the first conductor ring surface and between the second magnetic carrier ring surface and the second conductor ring surface; the conductor ring 23 is connected to the driving disc 21 through the magnetic conduction cylinder 22, so that the installation of the conductor ring 23 is facilitated; the driving disc 21 is provided with a plurality of fan blades 24, and the fan blades 24 are arranged on the driving disc 21 in an annular array manner; it should be noted that the setting angle of the fan blades 24 is determined according to the rotation direction of the driving disk 21 for guiding the heat dissipation air; a plurality of annular heat dissipation grooves 25 are arranged on the side wall of the driving disc 21 connected with the conductor ring 23, and the plurality of annular heat dissipation grooves 25 are arranged on the side wall of the magnetic conduction barrel 22 on the driving disc 21, so that the heat dissipation area is enlarged and the noise is not increased; it should be noted that, according to the loads with different magnitudes, the combination and collocation of the multi-cylinder structure formed by the plurality of conductor rings 23 and the magnetic carrier ring 15 are adopted.

As an example, in the present embodiment, the magnetic carrier ring 15 includes a first magnetic ring 151 and a second magnetic ring 152 that are distributed outward at intervals with the driven disk 11 as a center; the first magnetic ring 151 and the second magnetic ring 152 are respectively matched with the corresponding conductor ring 23 to form a plurality of force transmission surfaces, so as to form a multi-cylinder structure.

As shown in fig. 1 and 3, the driving disc 21 is provided with a plurality of first air inlet holes 26, and the driven disc 11 is provided with a plurality of second air inlet holes 16; at least one first heat dissipation through hole 27 is arranged on the magnetic conduction cylinder 22 and the conductor ring 23, at least one second heat dissipation through hole 17 is arranged on the magnetic carrying ring 15, the first air inlet through hole 26 is horizontally arranged, and/or the second air inlet through hole 16 is horizontally arranged for entering wind, the first heat dissipation through hole 27 and the second heat dissipation through hole 17 are respectively vertically arranged with a horizontal line, so that wind entering from the first air inlet through hole 26 and/or the second air inlet through hole 16 can flow out conveniently; in the process of rotating the driving disc 21 and the driven disc 11 together, the fan blades 24 force air to enter the air gap formed by the conductor ring 23 and the magnetic carrier ring 15 from the first air inlet through holes 26 to radiate the air gap, so that the ventilation quantity of the first heat radiation through holes 27, the second heat radiation through holes 17 and the air gap is increased, and the convection heat radiation speed is increased.

In this embodiment, during the rotation of the driving disc 21 and the driven disc 11 together, wind enters from the second air inlet through hole 16 and the first air inlet through hole 26, passes through the first heat dissipation through hole 27 and/or the second heat dissipation through hole 17, and finally flows out from the first heat dissipation through hole 27 of the magnetic conductive cylinder 22 and the conductor ring 23 located at the outermost side of the center of the driving disc 21, as shown by the arrow in fig. 3, part of the wind continuously rotates outwards along with the rotation of the driven disc 11 and the driving disc 21; part of wind enters the inside of the conductor ring 23 and the magnetic carrier ring 15 through the second air inlet through hole 16 and the first air inlet through hole 26, and is outwards diffused through the first heat dissipation through hole 27 and the second heat dissipation through hole 17 in the rotating process until the part of wind is diffused outside the product, so that the heat dissipation effect is high; the ventilation amount at the first and second heat radiation through holes 27 and 17 and the air gap is increased, thereby accelerating the convection heat radiation speed.

Specifically, in the present embodiment, as shown in fig. 1, an adjusting mechanism is further included for adjusting the relative distance between the driving disk 11 and the driven disk 21, so as to change the meshing area of the magnetic induction between the conductor ring 23 and the magnetic carrier ring 15 to achieve the effect of speed regulation; the adjusting mechanism comprises a bearing seat supporting assembly and a driving unit, the bearing seat supporting assembly comprises an extending shaft 31 matched with the driving disc 21, the extending shaft 31 is arranged on the driving disc 21 in a penetrating mode, at the moment, the extending shaft 31 is connected with an input shaft of the power equipment, and meanwhile, a limiting piece is arranged between the extending shaft 31 and the driving disc 21 in the radial movement direction, so that the driving disc 21 is driven to rotate when the extending shaft 31 rotates, and the axial movement of the driving disc 21 in the extending shaft 31 is not influenced; the central line of the extension shaft 31 coincides with the central line of the hub 12; the extending shaft 31 is sleeved with a shaft sleeve 32, and the shaft sleeve 32 moves along the axial direction of the extending shaft 31; one end of the shaft sleeve 32 is fixedly connected with the driving disc 21 through a bolt; the shaft sleeve 32 is connected with a bearing outer cylinder 34 through a bearing 33, and the bearing 33 can bear axial force and radial force, so that the shaft sleeve 32 can rotate relative to the bearing outer cylinder 34 through the bearing 33; the end of the outer bearing cylinder 34 is provided with a bearing end cover 35, the bearing end cover 35 covers the bearing 33 in the bearing 33 so that the bearing 33 is positioned in the opposite sealing space, and in addition, the connection parts of the bearing end cover 35 and the outer bearing cylinder 34 and the shaft sleeve 32 are respectively provided with an oil seal 36 to prevent dust or foreign matters from entering the bearing 33; the driving unit is connected with the bearing outer cylinder 34, and it should be noted that the driving unit is, but not limited to, a motor or an actuator, and only needs to be a driving device capable of driving the driving disc 21 to move along the axial direction of the extension shaft 31; the driving unit works and drives the driving disc 21 connected with the shaft sleeve 32 to move away from the driven disc 11 along the axial direction of the extension shaft 31, so that the meshing area of magnetic induction between the conductor ring 23 and the magnetic carrier ring 15 is changed to achieve the effect of speed regulation.

As a further illustration, in the present embodiment, the auxiliary driving structure further comprises an auxiliary driving structure, wherein the auxiliary driving structure comprises racks 37 connected to two sides of the bearing outer cylinder 34, and a gear 38 meshed with the racks 37 is connected to an output end of the driving unit; it should be noted that the gear 38 may be designed as a multi-stage gear set as required, and will not be described again, as shown in fig. 4.

As a further illustration, in the present embodiment, as shown in fig. 1, at least three guide posts 29 are fixed to the driving disk 21, and a sliding sleeve 210 matched with the guide posts 29 is provided on the extending shaft 31, so that when the driving disk 21 moves along the axial direction of the extending shaft 31, the direction of movement of the guide posts 29 is kept stable and smooth; the other end of the extension shaft 31 is connected to the input shaft of the power plant by a first expansion sleeve 211.

In the embodiment, the conductor rotor assembly is connected with the input shaft of the power equipment, the speed is always at the maximum rotating speed, the convective heat exchange effect is maintained at the maximum point, and the cooling is optimized; the cooling wind speed is improved, and the heat dissipation effect is better; compared with the prior art, 70% of cooling air can be lifted when the effective maximum slip is 30% for speed regulation, and the conductor rings and the magnetic carrier rings can be more densely arranged; the multi-cylinder structure formed by the conductor ring and the magnetic carrying ring is used, more force transmission surfaces are additionally arranged in a limited space range, the structure of the device is simplified, the device is smaller and more simplified, the cost performance is improved, a plurality of annular heat dissipation grooves are designed, the heat dissipation area is increased, and compared with the traditional method for installing the heat dissipation fins, the turbulence of gas is reduced, and the noise is reduced; the heat dissipation area is increased, so that the influence on the heat dissipation effect is not great; the multi-cylinder structure formed by the plurality of conductor rings and the magnetic carrying rings is adopted, cylinders with different specifications can be freely combined according to the transmission moment, and the flexible configuration of equipment power is realized; the increase of the force transmission surface, the multi-cylinder structure with the same torque has smaller volume than the prior structure.

In the embodiment, the fan blades arranged on the driving disc increase the air flow in the speed regulator, so that the heat dissipation effect is better; the adjusting mechanism of the gear rack has more accurate speed regulation and simple and stable structure; the manufacturing process of the gear rack is mature, and standard series products are directly selected, so that the manufacturing cost is reduced; the multi-cylinder structure comprises two or more conductor rings, has denser force transmission surfaces, and can transmit larger torque by using smaller volume; the special magnet is clamped in the mounting groove formed in the magnetic carrying ring, so that the mounting is firm, and the problem that the magnet is separated due to high rotating speed is avoided.

In addition, the strong cooling type multi-cylinder permanent magnet speed regulator is compared with the conventional single magnetic ring permanent magnet speed regulator in effect at the same rated power and rated rotation speed, so that the strong cooling type multi-cylinder permanent magnet speed regulator has breakthrough.

Wherein: the strong cooling type multi-cylinder permanent magnet speed regulator and the conventional single magnetic ring permanent magnet speed regulator are set as follows: rated power 1400kw, rated rotational speed 1500rpm, are compared from the following:

First, volumetric aspect: according to calculation, the magnetic coupling is made into a single cylinder form of a permanent magnet speed regulator with the conventional structure, and the diameter of a cylinder where the center of the magnet is positioned is about 1450mm; the strong cooling type multi-cylinder permanent magnet speed regulator structure is made into a multi-cylinder structure, and the diameter of a cylinder where the center of the outer cylinder magnet positioned at the outermost side is positioned is about 870mm; the magnetic coupling size is reduced by 40%.

Second, centrifugal force aspect: single cylinder structure according to centrifugal force formula f=mr ω ²: the centrifugal force of the single magnet is 17870.5 times of the mass of the magnet; a multi-cylinder structure: the centrifugal force of a single magnet of the outer cylinder is the greatest and is 10722.3 times of the mass of the magnet, and compared with a single-cylinder structure, the centrifugal force of the single magnet of the outer cylinder is reduced by 40%; according to calculation, under the condition that the cylinder with a single cylinder structure for accommodating the magnet meets the material strength requirement, the utilization rate of the magnet is extremely low, and the power requirement cannot be met at all; i.e. the single cylinder structure cannot achieve 1400kw of high power.

Third, noise aspect: the noise source of the magnetic coupling is close to the dipole sound source, and the sound power is proportional to the square of the diameter; under the same noise, the multi-cylinder structure can realize higher power requirements; assuming a single cylinder structure with 1400kw of power, its noise sound power is 2.78 times that of a multi-cylinder structure.

Fourth, heat dissipation aspect: the maximum heat dissipation power in the speed regulation process of the magnetic coupling is about 15% of rated power; the multi-cylinder structure disperses heat dissipation power on a plurality of magnetic conductive cylinders according to a certain proportion, for example, the multi-cylinder structure of 1400kw disperses heat dissipation power of 207kw on the magnetic conductive cylinders according to 40%,32%,15%,13%, increases heat dissipation area through a heat dissipation groove, and fan blades and heat dissipation through holes on two sides increase air flow to form forced convection to accelerate heat dissipation; the two are combined to ensure that the temperature rise of the equipment meets the use requirement. The heat dissipation power of 207kw of the single-cylinder structure with the same size is totally dissipated by the outer cylinder at the outermost side, the temperature rise can not meet the use requirement, and the rated power of the magnetic coupling must be reduced to meet the temperature rise requirement.

From the four aspects, the strong cooling type multi-cylinder permanent magnet speed regulator has more advantages compared with the conventional single-magnet ring permanent magnet speed regulator.

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 exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly as such and may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (10)

1. Strong cold type multi-cylinder permanent magnet speed regulator, its characterized in that includes: the permanent magnet rotor assembly comprises a driven disc, wherein at least two magnetic carrying rings are connected to the driven disc, and each magnetic carrying ring is provided with a first magnetic carrying ring surface and a second magnetic carrying ring surface;

The conductor rotor assembly comprises a driving disc, and a conductor ring is connected to the driving disc; the number of the conductor rings corresponds to the number of the magnetic carrying rings; the conductor ring is provided with a first conductor ring surface and a second conductor ring surface which are respectively opposite to the first magnetic carrier ring surface and the second magnetic carrier ring surface of the magnetic carrier ring; air gaps are respectively arranged between the first magnetic carrier ring surface and the first conductor ring surface and between the second magnetic carrier ring surface and the second conductor ring surface; the driving disc is provided with a plurality of fan blades;

The driving disc is provided with a plurality of first air inlet through holes, and the driven disc is provided with a plurality of second air inlet through holes; at least one first heat dissipation through hole is formed in the conductor ring, and at least one second heat dissipation through hole is formed in the magnetic carrier ring.

2. The strong cooling type multi-cylinder permanent magnet speed regulator according to claim 1, wherein a plurality of annular heat dissipation grooves are arranged on the side wall of the driving disc connected with the conductor ring.

3. The forced cooling type multi-cylinder permanent magnet speed regulator according to claim 1, wherein the first air inlet through hole is horizontally arranged and/or the second air inlet through hole is horizontally arranged.

4. A multi-cylinder permanent magnet speed regulator according to any one of claims 1 to 3, wherein the first heat dissipation through hole and the second heat dissipation through hole are respectively disposed vertically to a horizontal line.

5. The strong cooling type multi-cylinder permanent magnet speed regulator according to claim 1 or 2, wherein the magnetic carrier ring comprises a magnetic carrier ring body, a plurality of magnet mounting grooves are formed in the magnetic carrier ring body in an annular array, magnets are connected in the magnet mounting grooves, and magnetic poles of two adjacent magnets are oppositely arranged.

6. The multi-cylinder permanent magnet speed regulator according to claim 5, wherein the two sides of the magnet mounting groove are respectively provided with a limit groove, the two sides of the magnet are respectively provided with a protruding part matched with the corresponding limit groove, and the protruding part is connected with the corresponding limit groove when the magnet is connected in the magnet mounting groove.

7. A multi-cartridge permanent magnet speed governor according to any of claims 1 to 3, further comprising an adjustment mechanism for adjusting an engagement area of magnetic induction between the conductor ring and the carrier ring; the adjusting mechanism comprises a bearing seat supporting assembly and a driving unit, wherein the bearing seat supporting assembly comprises an extending shaft matched with the driving disc, and the extending shaft penetrates through the driving disc; the shaft sleeve is sleeved on the extension shaft and moves along the axial direction of the extension shaft; one end of the shaft sleeve is fixedly connected with the driving disc; the shaft sleeve is connected with a bearing outer cylinder through a bearing, and the shaft sleeve can rotate relative to the bearing outer cylinder through a bearing; the driving unit is connected with the bearing outer cylinder.

8. The strong cooling multi-cylinder permanent magnet speed regulator according to claim 7, wherein the end of the bearing outer cylinder is provided with a bearing end cover, and the bearing end cover covers the bearing inside.

9. The strong cooling type multi-cylinder permanent magnet speed regulator according to claim 8, wherein oil seals are respectively arranged at the joints of the bearing end cover and the bearing outer cylinder and the shaft sleeve.

10. The strong cooling type multi-cylinder permanent magnet speed regulator according to claim 7, wherein the driving disk is connected with a guide post, and the extension shaft is provided with a sliding sleeve matched with the guide post.