Liquid-cooled speed-regulating magnetic clutch for ships

Abstract

A liquid-cooled speed-regulating magnetic clutch for ships relates to a magnetic clutch. The invention aims to solve the problems of poor compensation performance, poor vibration reduction performance and large axial space occupation of the existing water-cooled magnetic clutch during non-contact torque transmission. The cover is fixed on a side wall of a support plate, and the permanent magnetic disk assembly and the conductor disk assembly are both arranged inside the cover, and the permanent magnetic disk assembly is arranged inside the conductor disk assembly. The transmission shaft passes through the center of the bracket into the inside of the cover, and a permanent magnetic disk is sleeved on the transmission shaft. A support bearing is sleeved on the transmission shaft between the inner ring of the bracket and the transmission shaft, and a sleeve is connected to the inner ring of the bracket. The support bearing is installed between the transmission shaft and the sleeve. The air gap adjustment mechanism is used to adjust the air gap between the permanent magnetic disk assembly and the conductor disk assembly to achieve clutch and load end speed adjustment. At least one cooling mechanism is arranged on the inner wall of a support plate and the outer wall of the cover, and the cooling mechanism is used to cool the two conductor disks. It is used to give full play to the compensation and vibration isolation performance of magnetic transmission.

Description

Technical Field

[0001] The invention relates to a magnetic clutch, in particular to a device for limiting the temperature rise of an eddy current disc inside the magnetic clutch in a working state by using a circulating liquid cooling medium under marine conditions. Background Art

[0002] The magnetic clutch uses the interaction between magnetic fields to achieve speed regulation and clutch control of its load-end equipment. It is a non-contact torque transmission with the characteristics of easy installation and maintenance, vibration isolation, and strong compensation capabilities. It is currently widely used in industrial connection transmissions and speed regulation and energy-saving systems of pump groups / fans.

[0003] The magnetic clutch is mainly composed of three parts: a permanent magnetic disk assembly, a conductor disk assembly and a control mechanism. The permanent magnetic disk is equipped with a magnet with N and S poles arranged alternately. The conductor disk assembly is equipped with an eddy current disk. The conductor disk assembly is connected to the drive-end device, and the permanent magnetic disk assembly is connected to the load-end device. The controller is used to adjust the gap between the permanent magnetic disk assembly and the conductor disk assembly to achieve speed regulation and clutch control of the load-end device. Under working conditions, due to the speed difference between the conductor disk and the permanent magnetic disk, an induced eddy current is formed on the conductor eddy current disk. The eddy current generates a large amount of heat, causing the temperature of the conductor disk to rise. At the same time, the heat of the conductor disk is transferred to the permanent magnet through convection, radiation, etc., so that the temperature of the permanent magnetic disk rises. Excessive temperature rise will cause the demagnetization of the permanent magnet and damage to the conductor disk. Therefore, the temperature rise of the magnetic clutch must be limited. At present, the cooling methods used by magnetic clutches are mainly air cooling and water cooling. The air cooling method is to set a heat sink on the outside of the conductor disk of the magnetic clutch. The structure is simple and compact, but this cooling method has limited heat dissipation capacity and will generate large noise during operation. It is currently only used on high-speed and low-power magnetic clutches. For low-speed, high-power magnetic clutches, water cooling is mostly used.

[0004] In recent years, the requirements for ship vibration reduction and noise reduction have been continuously improved. By utilizing the technical characteristics of non-contact torque transmission of magnetic clutch and applying it to ship transmission and electromechanical equipment, the influence of hull deformation and installation error on the connected equipment on both sides of the clutch can be compensated, the transmission path of vibration can be isolated, and mutual interference between shaft systems can be eliminated. While meeting the requirements for ship vibration reduction and noise reduction, the abnormal load on the internal bearings and seals of the equipment on both sides of the clutch can be reduced, the service life can be extended, the maintenance cost can be reduced, and the reliability of the device can be improved.

[0005] The ship's magnetic clutch is installed in a closed cabin with limited space, requiring the clutch to be compact. The coolant capacity in the cabin environment is limited, requiring the clutch cooling structure to have high cooling efficiency. The water-cooled magnetic clutch structure currently used in the industrial field can be found in ZL201410040544 (a water-cooled permanent magnet speed regulator). Its application in the ship environment has the following problems:

[0006] 1. The water-cooled magnetic clutch adopts a single supporting box structure. The conductor disc assembly and the permanent magnetic disc assembly of the clutch are rigidly supported on the same box. The conductor disc assembly and the permanent magnetic disc assembly can transmit vibration through the supporting box, resulting in the failure to give full play to the performance advantages of the magnetic clutch in compensating for misalignment and isolating vibration during non-contact torque transmission;

[0007] 2. The conductor disk and permanent magnet disk are cooled by spraying or machining cooling channels. In the spray cooling method, the cooling medium is difficult to effectively reach the internal heating parts and the cooling liquid flow rate is large. The cooling channels are difficult to machine and difficult to adjust.

[0008] 3. Couplings are required on both sides for shaft compensation, which occupies a large axial space;

[0009] 4. There is no direct and accurate method for testing the temperature of permanent magnets. There is a lack of real-time temperature detection of permanent magnet disk components, and problems in the working process cannot be discovered in time.

[0010] in addition, Figure 1 This is a schematic diagram of the principle of a water-cooled magnetic clutch commonly used in the existing industrial field. It adopts a single support box structure. The conductor disc assembly and the permanent magnetic disc assembly of the clutch are rigidly supported on the same bracket. The air gap value L between the conductor disc assembly and the permanent magnetic disc assembly is adjusted by the control mechanism to achieve the purpose of clutching and adjusting the speed of the load end. In this structure, the conductor disc assembly and the permanent magnetic disc assembly can transmit vibration through the bracket, which cannot give full play to the performance advantage of the magnetic clutch in isolating vibration. It needs to be connected to the drive shaft at the drive end and the connecting shaft at the load end through a flexible coupling, and the axial space is large. Summary of the invention

[0011] Aiming at the problems of poor compensation performance, poor vibration reduction performance and large axial space occupied by the existing water-cooled magnetic clutch during non-contact torque transmission, the present invention provides a liquid-cooled speed regulating magnetic clutch for ships.

[0012] A liquid-cooled speed-regulating magnetic clutch for ships, the magnetic clutch comprising a permanent magnetic disc assembly 1, a conductor disc assembly 2, a bracket 4, a conductor disc connecting flange 5, an air gap adjustment mechanism, a transmission shaft 8 and a drive shaft 9,

[0013] One end of the transmission shaft 8 is connected to one end of the permanent magnet disk assembly 1, and the other end of the transmission shaft 8 is connected to the load end.

[0014] The magnetic clutch also includes a housing 3, a floating seal 6, a cooling mechanism 7, a support bearing 10, an O-ring 13 and a sleeve 8-1.

[0015] The support 4 is composed of two supporting plates that support each other.

[0016] The permanent magnet disk assembly 1 includes two permanent magnet disks and a connecting rod mechanism. The two permanent magnet disks are connected by the connecting rod mechanism.

[0017] The conductor disc assembly 2 includes two conductor discs and a connecting rod. The two conductor discs are connected by the connecting rod.

[0018] The cover 3 is fixed on a side wall of a support plate 4. The permanent magnetic disk assembly 1 and the conductor disk assembly 2 are both arranged inside the cover 3, and the permanent magnetic disk assembly 1 is arranged inside the conductor disk assembly 2.

[0019] The transmission shaft 8 passes through the center of the bracket 4 and enters the housing 3. A permanent magnet is sleeved on the transmission shaft 8. A support bearing 10 is sleeved on the transmission shaft 8 between the inner ring of the bracket 4 and the transmission shaft 8. A sleeve 8-1 is connected to the inner ring of the bracket 4. The support bearing 10 is installed between the transmission shaft 8 and the sleeve 8-1.

[0020] The air gap adjustment mechanism does not rotate with the permanent magnetic disk assembly 1, and is used to adjust the air gap between the permanent magnetic disk assembly 1 and the conductor disk assembly 2 to achieve clutch and load end speed regulation.

[0021] The air gap adjustment mechanism includes a No. 1 bearing 11, a drive sleeve 12, a wrench 18 and a positioning ring disk 14

[0022] The driving sleeve 12 is formed by coaxially connecting two cylinders with different diameters. The two cylinders with different diameters are an integrated structure. The inner diameter of one cylinder is sleeved on the sleeve 8-1. An O-ring 13 is installed between a support plate and the outer circumferential surface of a cylinder. A gap is left between the inner circumferential surface of the other cylinder and the transmission shaft 8. A No. 1 bearing 11 is sleeved on the outer circumferential surface of the other cylinder. The inner ring surface of another permanent magnetic disk is fixedly sleeved on the No. 1 bearing 11. A circular ring disk 14 is fixedly sleeved on the end of the other cylinder. The circular ring disk 14 limits the No. 1 bearing 11 in the axial direction. A wrench 18 is set on a cylinder. The driving shaft 9 passes through the center of the cover 3. A conductor disk connecting flange 5 is sleeved on the driving shaft 9 to support a conductor disk on the driving shaft 9. The cover 3 and the conductor disk connecting flange 5 are connected through a floating seal 6. Another conductor disk is suspended on the transmission shaft 8.

[0023] At least one cooling mechanism 7 is disposed on the inner wall of a support plate and the outer wall of the housing 3. The spray port 7-1 of the cooling mechanism faces the back irons 2-3 of the two conductor discs. The cooling mechanism 7 is used to cool the two conductor discs.

[0024] Preferably, two cooling mechanisms 7 are respectively arranged on the outer wall of the housing 3 and the inner wall of a support plate.

[0025] The two cooling mechanisms 7 on the outer wall of the housing 3 are arranged in a mirror image along the vertical midplane where the axis of the transmission shaft 8 is located.

[0026] The two cooling mechanisms 7 on the inner wall of a support plate are arranged in a mirror image along the vertical mid-plane where the axis of the transmission shaft 8 is located.

[0027] Preferably, the magnetic clutch further comprises two cooling channels, which are respectively arranged on the back irons 2-3 of the two conductor discs.

[0028] Each cooling channel includes a channel back plate 15-1 and an adjustment pad 15-2.

[0029] The two flow channel back plates 15-1 are fixed to the back irons 2-3 of the two conductor disks respectively by bolts, and an adjustment pad 15-2 is arranged between the back iron 2-3 of each conductor disk and each flow channel back plate 15-1, and the adjustment pad 15-2 is sleeved on the bolts. Each flow channel back plate is provided with an annular liquid collecting structure at a 45° angle to the flow channel near the injection port 7-1 of the cooling mechanism.

[0030] Preferably, the cover shell 3 includes an upper cover shell 3-1 and a lower cover shell 3-2, and the upper cover shell 3-1 and the lower cover shell 3-2 are fixed by bolt connection.

[0031] The magnetic clutch also includes a vent cap 3-3, a collecting groove 3-4 and a housing return flange 3-5.

[0032] The vent cap 3-3 is arranged on the upper cover shell 3-1.

[0033] A collecting groove 3-4 is provided at the bottom of the lower cover shell 3-2, and the collecting groove 3-4 is connected to the cover shell return flange 3-5. The collecting groove 3-4 is used to collect the cooling medium sprayed by the cooling mechanism 7; the cover shell return flange 3-5 is connected to the external water system to output the cooling medium to the outside.

[0034] Preferably, the floating seal 6 comprises a connecting housing 6-1, two springs 6-2 and two sealing rings 6-3.

[0035] The connecting shell 6-1 includes an upper shell 6-4 and a lower shell 6-5. The upper shell 6-4 and the lower shell 6-5 are connected to form a circular ring. The inner ring surface of the circular ring is provided with two annular grooves along the annular direction. A sealing ring 6-3 is arranged in the annular direction in each annular groove. A spring 6-2 is arranged on the outer surface of the sealing ring. The spring 6-2 is used to press the sealing ring 6-3 so that the sealing ring 6-3 is in close contact with the conductor disk connecting flange 5.

[0036] The connecting shell 6 - 1 is connected to the inner annular surface of the housing 3 .

[0037] Preferably, a reflux hole is opened on the inner wall of the lower shell 6 - 5 , and the reflux hole is connected to the interior of the cover shell 3 .

[0038] Preferably, each spring 6 - 2 is a cylindrical tension spring with round hooks at both ends.

[0039] Preferably, the magnetic clutch further includes a temperature sensor 16, a measuring slip ring 17 and a signal line 16-1.

[0040] Each permanent magnetic disk includes a disk-shaped magnet support aluminum plate 1-2, a permanent magnet back iron 1-3 and a plurality of permanent magnets 1-1.

[0041] A plurality of grooves are evenly arranged in the circumferential direction on one disk surface of the magnet support aluminum plate 1-2, and a permanent magnet 1-1 is arranged in each groove. The permanent magnet back iron 1-3 covers the grooved surface of the magnet support aluminum plate 1-2 to seal the permanent magnet 1-1.

[0042] The temperature sensor is arranged on the temperature measuring hole reserved on the magnet supporting aluminum plate 1-2, and the temperature measuring sensor 16 is used to detect the temperature of the permanent magnet 1-1;

[0043] Signal line holes are provided on the permanent magnetic disk and the transmission shaft 8. The signal line 16-1 of the temperature sensor enters the slip ring inner ring 17-1 of the measuring slip ring 17 on the transmission shaft 8 through the signal line hole, enters the slip ring outer ring 17-2 from the slip ring inner ring 17-1 to output the signal line 16-1, and the slip ring outer ring 17-2 is fixed to the bracket with a limit bolt 17-3.

[0044] Preferably, the signal line hole gap is filled with sealant.

[0045] Beneficial effects of the present invention:

[0046] The transmission components of the magnetic clutch include a permanent magnet component and a conductor disk component. The permanent magnet component and the conductor disk assembly are supported by a bracket. A closed cover is installed on the bracket for closed recovery of the cooling medium. A floating seal is installed between the cover and the outer diameter surface of the conductor disk mounting flange. There is a floating contact between the floating seal and the outer diameter of the conductor disk mounting flange, which can ensure that there is no leakage or overflow of the cooling medium at the seal. During operation, the additional radial force and friction force generated between the floating seal and the outer diameter of the conductor disk mounting flange are very small, which can ensure that the vibration of the shaft system where the conductor disk mounting flange is located will not be transmitted to the shaft system where the permanent magnet is located through the closed cover and the bracket, and the vibration reduction performance is good.

[0047] Compared with the prior art, the conductor disc assembly of the present application is not provided with a separate support, the magnetic clutch and the drive end device are not provided with a flexible coupling, the magnetic clutch conductor disc assembly and the drive end device transmission shaft are rigidly connected, and the magnetic field between the conductor disc assembly and the permanent magnetic disc assembly is used to compensate for the misalignment between the drive end device and the magnetic clutch, thereby shortening the axial space requirement of the entire unit. Moreover, the magnetic field between the conductor disc assembly and the permanent magnetic disc assembly can compensate for the misalignment of the shaft system. Moreover, the entire structure of the present application occupies less axial space than the prior art structure.

[0048] The cooling channel of the present application is simple to process, saving time and effort. The cooling channel is enclosed by the conductor disk back iron, the channel back plate, and the adjustment pad. The adjustment pad is located between the conductor disk back iron and the channel back plate. The conductor disk back iron and the channel back plate are fastened by bolts. The flow area of ​​the channel can be adjusted by changing the thickness of the adjustment pad. A cooling medium injection port is installed on the closed cover and bracket of the clutch. The cooling medium is injected into the cooling channel. The channel back plate has a liquid collecting ring at 45 degrees to the channel. The injection port is located in the liquid collecting ring. The channel is in a rotating state during operation. Under the action of centrifugal force, the cooling medium can be evenly distributed in the channel to fully cool the conductor disk.

[0049] The present application also has the function of measuring the temperature of the permanent magnet and can measure the temperature of the permanent magnet in real time. Specifically, a temperature measuring hole is arranged on the supporting aluminum plate near the permanent magnet, and an embedded temperature measuring sensor is used to measure the temperature of the permanent magnet online. A signal line hole is arranged on the connecting part of the permanent magnetic disk assembly and the transmission shaft, a measuring slip ring is installed on the transmission shaft, the inner ring of the measuring slip ring is fixed on the transmission shaft, and the outer ring of the measuring slip ring is fixed on the bracket. The signal line enters the slip ring through the signal hole, and the rotation signal is output through the slip ring.

[0050] For high-power, low-speed magnetic clutches, the liquid-cooled structure of the magnetic clutch in the present application is simple in structure and has low space requirements for the unit, which can meet the use environment with space restrictions such as cabins. It can not only meet the heat dissipation requirements of the eddy current disk and permanent magnet, but also give full play to the compensation and vibration isolation performance advantages of the magnetic transmission. Through online temperature rise measurement of the permanent magnet, abnormal conditions in the working process can be discovered in time, which is beneficial to the use and long-term operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 The schematic diagram is a schematic diagram of a water-cooled magnetic clutch commonly used in the existing industrial field, wherein reference numeral 20 is a flexible coupling, and reference numeral 19 is a connecting shaft;

[0052] Figure 2 This is a schematic diagram of the principle of the liquid-cooled speed-regulating magnetic clutch for ships of this application;

[0053] Figure 3 This is a cross-sectional view of a liquid-cooled speed-regulating magnetic clutch for ships;

[0054] Figure 4 This is a top view of a liquid-cooled speed-regulating magnetic clutch for ships (without the upper half of the cover);

[0055] Figure 5 for Figure 4 A partial enlarged view of the middle II;

[0056] Figure 6 To adopt Figure 5The cooling mechanism sprays cooling medium to the back iron of the conductor disk on one side, and a partial outline diagram of the cooling channel formed on the back iron of the conductor disk;

[0057] Figure 7 for Figure 4 A partial enlarged view of the middle part III;

[0058] Figure 8 To adopt Figure 6 The middle cooling mechanism sprays cooling medium to the back iron of the conductor disk on the other side, and a partial outline diagram of the cooling flow channel formed on the back iron of the conductor disk;

[0059] Fig. 9 It is the outer contour of the housing;

[0060] Fig.10 It is the internal outline of the housing;

[0061] Fig.11 It is a cross-sectional view of a floating seal;

[0062] Fig.12 This is the outer shape of the floating seal after being cut apart along the symmetry plane and the connected shell is separated;

[0063] Fig.13 for Figure 3 A partial enlarged view of point Ⅰ in the middle;

[0064] Fig.14 for Fig.13 A partial view of the right side view. DETAILED DESCRIPTION

[0065] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0066] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0067] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0068] Specific implementation method 1: Combination Figure 2 and Figure 3 The present embodiment is described. The liquid-cooled speed regulating magnetic clutch for ships described in the present embodiment comprises a permanent magnetic disk assembly 1, a conductor disk assembly 2, a bracket 4, a conductor disk connecting flange 5, an air gap adjustment mechanism, a transmission shaft 8 and a drive shaft 9.

[0069] One end of the transmission shaft 8 is connected to one end of the permanent magnet disk assembly 1, and the other end of the transmission shaft 8 is connected to the load end.

[0070] The magnetic clutch also includes a housing 3, a floating seal 6, a cooling mechanism 7, a support bearing 10, an O-ring 13 and a sleeve 8-1.

[0071] The support 4 is composed of two supporting plates that support each other.

[0072] The permanent magnet disk assembly 1 includes two permanent magnet disks and a connecting rod mechanism. The two permanent magnet disks are connected by the connecting rod mechanism.

[0073] The conductor disc assembly 2 includes two conductor discs and a connecting rod. The two conductor discs are connected by the connecting rod.

[0074] The cover 3 is fixed on a side wall of a support plate 4. The permanent magnetic disk assembly 1 and the conductor disk assembly 2 are both arranged inside the cover 3, and the permanent magnetic disk assembly 1 is arranged inside the conductor disk assembly 2.

[0075] The transmission shaft 8 passes through the center of the bracket 4 and enters the housing 3. A permanent magnet is sleeved on the transmission shaft 8. A support bearing 10 is sleeved on the transmission shaft 8 between the inner ring of the bracket 4 and the transmission shaft 8. A sleeve 8-1 is connected to the inner ring of the bracket 4. The support bearing 10 is installed between the transmission shaft 8 and the sleeve 8-1.

[0076] The air gap adjustment mechanism does not rotate with the permanent magnetic disk assembly 1, and is used to adjust the air gap between the permanent magnetic disk assembly 1 and the conductor disk assembly 2 to achieve clutch and load end speed regulation.

[0077] The air gap adjustment mechanism includes a No. 1 bearing 11, a drive sleeve 12, a wrench 18 and a positioning ring disk 14

[0078] The driving sleeve 12 is formed by coaxially connecting two cylinders with different diameters. The two cylinders with different diameters are an integrated structure. The inner diameter of one cylinder is sleeved on the sleeve 8-1, and the inner diameter of the other cylinder is sleeved on the sleeve 8-1. An O-ring 13 is installed between a support plate and the outer circumferential surface of a cylinder. A gap is left between the inner circumferential surface of the other cylinder and the transmission shaft 8. A No. 1 bearing 11 is sleeved on the outer circumferential surface of the other cylinder. The inner ring surface of another permanent magnetic disk is fixedly sleeved on the No. 1 bearing 11. A circular ring disk 14 is fixedly sleeved on the end of the other cylinder. The circular ring disk 14 limits the No. 1 bearing 11 in the axial direction. A wrench 18 is set on a cylinder. The driving shaft 9 passes through the center of the cover 3. A conductor disk connecting flange 5 is sleeved on the driving shaft 9 to support a conductor disk on the driving shaft 9. The cover 3 and the conductor disk connecting flange 5 are connected through a floating seal 6. Another conductor disk is suspended on the transmission shaft 8.

[0079] At least one cooling mechanism 7 is disposed on the inner wall of a support plate and the outer wall of the housing 3. The spray port 7-1 of the cooling mechanism faces the back irons 2-3 of the two conductor discs. The cooling mechanism 7 is used to cool the two conductor discs.

[0080] In this embodiment, the working principle of the present application is: the driving end drives the driving shaft 9 to rotate, the driving shaft 9 rotates to drive the conductor disk assembly to rotate, the conductor disk assembly rotates to generate asynchronous slip between the conductor disk assembly and the permanent magnetic disk assembly, and an eddy current magnetic field is generated on the conductor disk. The eddy current magnetic field interacts with the permanent magnetic disk magnetic field, thereby causing the permanent magnetic disk assembly to rotate. Since the left permanent magnetic disk is connected to the transmission shaft, the permanent magnetic disk assembly rotates to drive the transmission shaft 8 to rotate.

[0081] There is no connection between the drive shaft 9 and the transmission shaft 8. The transmission shaft 8 is supported on the bracket 4 by a rolling bearing.

[0082] The two support plates in the bracket are as follows Figure 3 As shown in , they are located on both sides and supported and connected to each other.

[0083] Figure 2 and Figure 3 In the embodiment, the permanent magnetic disk assembly 1 is supported by the bracket 4, the conductor disk assembly 2 is unsupported and rigidly connected to the drive shaft 9, and does not need to be connected through a flexible coupling. The magnetic field between the conductor disk assembly 2 and the permanent magnetic disk assembly 1 can compensate for the misalignment of the shaft system, shortening the axial dimension of its installation and use. The cover 3, the bracket 4, the floating seal 6, the conductor disk connecting flange 5, the drive sleeve 12, and the permanent magnetic disk assembly 1 together constitute a closed circulation space for the cooling medium of the magnetic clutch. The cover 3 is fixed to the bracket 4 by bolts and locating pins. The magnetic circuit part composed of the permanent magnetic disk assembly 1 and the conductor disk assembly 2 is located inside the cover 3. The conductor disk connection method The flange 5 extends through the cover shell 3, and a floating seal 6 is installed between the cover shell 3 and the conductor disk connecting flange 5. The sealing surface of the floating seal 6 contacts the outer diameter of the conductor disk connecting flange 5 to ensure that no leakage occurs at the sealing contact point when the conductor disk assembly 2 is in operation. The driving sleeve 12 passes through the bracket 4 and enters the cover shell 3 to be connected with the permanent magnetic disk assembly 1. The regulating mechanism 18 can adjust the air gap between the permanent magnetic disk assembly 1 and the conductor disk assembly 2 through the driving sleeve 12. During the adjustment process, relative sliding will occur between the driving sleeve 12 and the bracket 4. The sliding surface adopts an O-ring 13 as a dynamic seal to ensure that no liquid leakage occurs on the sliding surface during the adjustment process.

[0084] The function of setting the No. 1 bearing 11 is that the inner ring of the No. 1 bearing is installed on the driving sleeve 12, and the outer ring is installed on the permanent magnetic disk on one side, which can ensure that the outer permanent magnetic disk rotates with the transmission shaft without affecting the left and right pulling of the driving sleeve 12. When the driving control mechanism 18 pulls the driving sleeve 12 axially, it will simultaneously pull the No. 1 bearing and the permanent magnetic disk thereon to move axially, thereby realizing the air gap adjustment between the permanent magnetic disk assembly and the conductor disk assembly.

[0085] Figure 3 The conductor disk on the right side is suspended, and the inner ring is not connected to any object. The driving shaft 9 rotates, driving the conductor disk connecting flange 5 to rotate, thereby driving the conductor disk assembly to rotate. The permanent magnetic disk assembly is driven by the magnetic field between the conductor disk and the permanent magnetic disk.

[0086] The support bearing adopts the form of single-point bidirectional fixation, the side close to the measuring slip ring 17 is a bidirectional fixed bearing, and the other side is a floating support. The inner diameter of a cylinder is sleeved on the sleeve 8-1 through clearance fit.

[0087] Specific implementation method 2: Combination Figure 5 , Figure 6 and Figure 7 , Figure 8 This embodiment is described. This embodiment further defines the liquid-cooled speed regulating magnetic clutch for ships described in the first embodiment. In this embodiment, two cooling mechanisms 7 are respectively provided on the outer wall of the housing 3 and the inner wall of a support plate.

[0088] The two cooling mechanisms 7 on the outer wall of the housing 3 are arranged in a mirror image along the vertical midplane where the axis of the transmission shaft 8 is located.

[0089] The two cooling mechanisms 7 on the inner wall of a support plate are arranged in a mirror image along the vertical mid-plane where the axis of the transmission shaft 8 is located.

[0090] In this embodiment, if Figure 4 , Figure 6 and Figure 7 As shown, two cooling mechanisms 7 are respectively arranged on the outer wall of the housing 3 and on the inner wall of a support plate. Figure 6 In the figure, two cooling mechanisms 7 are arranged on the inner wall of a support plate, and the cooling medium sprayed from the spray ports of the two cooling mechanisms 7 forms a flow direction on the back plate of the conductor disk. Fig. 9 As shown, the two cooling mechanisms 7 on the outer wall of the housing 3 are located at the same level. Therefore, the two cooling mechanisms 7 on the inner wall of a support plate are also located at the same level.

[0091] Specific implementation method three: Combination Figures 5 to 8 This embodiment is described. This embodiment is a further limitation of the liquid-cooled speed regulating magnetic clutch for ships described in the second embodiment. In this embodiment, the magnetic clutch further includes two cooling channels, which are respectively arranged on the back irons 2-3 of the two conductor discs.

[0092] Each cooling channel includes a channel back plate 15-1 and an adjustment pad 15-2.

[0093] The two flow channel back plates 15-1 are fixed to the back irons 2-3 of the two conductor disks respectively by bolts, and an adjustment pad 15-2 is arranged between the back iron 2-3 of each conductor disk and each flow channel back plate 15-1, and the adjustment pad 15-2 is sleeved on the bolts. Each flow channel back plate is provided with an annular liquid collecting structure at a 45° angle to the flow channel near the injection port 7-1 of the cooling mechanism.

[0094] In this embodiment, Figure 5 and Figure 7 In the embodiment, the cooling channel adopts a combined assembly structure, the channel is in the shape of an annular gap, and is surrounded by the back iron 2-3 of the conductor disk, the channel back plate 15-1 and the adjustment pad 15-2. The three are connected and fixed by bolts evenly distributed around the circumference. The adjustment pad 15-2 is a hollow circular ring structure, and the connecting bolts pass through the inner hole of the adjustment pad 15-2 for connection. By adjusting the thickness of the adjustment pad 15-2, the flow area of ​​the channel can be changed. A ring-shaped liquid collecting structure with an angle of 45° with the channel is provided near the cooling medium injection port of the channel back plate 15-1. The injection port of the coolant is at the root of the liquid collecting structure, ensuring that the injected coolant can enter the cooling channel to the maximum extent. Figure 6 and Figure 8 In the process, the flow channel is in a rotating state during operation, and the coolant flows in the direction shown by the arrow in the figure. Under the action of centrifugal force, the cooling medium can be evenly distributed in the flow channel to fully cool the conductor disk.

[0095] Specific implementation method four: Combination Figure 4 , Fig. 9 and Fig.10 This embodiment is described. This embodiment further defines the liquid-cooled speed regulating magnetic clutch for ships described in the second embodiment. In this embodiment, the cover 3 includes an upper cover 3-1 and a lower cover 3-2. The upper cover 3-1 and the lower cover 3-2 are fixed by bolts.

[0096] The magnetic clutch also includes a vent cap 3-3, a collecting groove 3-4 and a housing return flange 3-5.

[0097] The vent cap 3-3 is arranged on the upper cover shell 3-1.

[0098] A collecting groove 3-4 is provided at the bottom of the lower cover shell 3-2, and the collecting groove 3-4 is connected to the cover shell return flange 3-5. The collecting groove 3-4 is used to collect the cooling medium sprayed by the cooling mechanism 7; the cover shell return flange 3-5 is connected to the external water system to output the cooling medium to the outside.

[0099] In this embodiment, Figure 4In the embodiment, two cooling mechanisms are respectively installed on the housing 3 and the bracket (4), and the cooling mechanisms may be cooling medium injection pipes, and the four cooling medium injection pipes are arranged symmetrically along the vertical mid-plane where the rotation axis of the magnetic clutch is located. The collecting trough 3-4 is used to collect the cooling medium injected by the cooling mechanism 7 to prevent the cooling liquid from being stirred by the rotor due to the excessively high liquid level of the cooling liquid.

[0100] Specific implementation method five: Combination Fig.11 and Fig.12 This embodiment is described. This embodiment further defines the liquid-cooled speed regulating magnetic clutch for ships described in the first embodiment. In this embodiment, the floating seal 6 includes a connecting housing 6-1, two springs 6-2 and two sealing rings 6-3.

[0101] The connecting shell 6-1 includes an upper shell 6-4 and a lower shell 6-5. The upper shell 6-4 and the lower shell 6-5 are connected to form a circular ring. The inner ring surface of the circular ring is provided with two annular grooves along the annular direction. A sealing ring 6-3 is arranged in the annular direction in each annular groove. A spring 6-2 is arranged on the outer surface of the sealing ring. The spring 6-2 is used to press the sealing ring 6-3 so that the sealing ring 6-3 is in close contact with the conductor disk connecting flange 5.

[0102] The connecting shell 6 - 1 is connected to the inner annular surface of the housing 3 .

[0103] In this embodiment, the sealing ring 6-3 is made of polyimide material and can be a two-half split structure, consisting of a sealing upper ring and a sealing lower ring. The spring is used to fix the sealing ring. The spring is a cylindrical tension spring with round hooks at both ends. Figure 8 Indicated by the arrow in the .

[0104] As shown in 11, if one sealing ring 6-3 is provided, a gap will be generated between the sealing ring 6-3 and the conductor disk connecting flange 5 if used for a long time. The advantage of the present application of providing two sealing rings 6-3 is that when the cooling medium is Fig.11 After the cooling medium enters the gap between the sealing ring 6-3 on the upper right and the conductor disk connecting flange 5, it will be blocked by the other sealing ring 6-3 on the left, because the flow rate of the medium is slow at this time, and the cooling medium will not overflow from the housing.

[0105] Specific embodiment six: This embodiment further limits the liquid-cooled speed regulating magnetic clutch for ships described in specific embodiment five. In this embodiment, a reflux hole 6-51 is opened on the inner wall of the lower shell 6-5, and the reflux hole 6-51 is connected to the interior of the cover 3.

[0106] In this embodiment, the present application may only open the return hole in the lower shell, because the cooling medium is easy to flow out from the lower shell, but not easy to flow out from the upper shell.

[0107] Specific embodiment seven: This embodiment further limits the liquid-cooled speed regulating magnetic clutch for ships described in specific embodiment four or five. In this embodiment, each spring 6-2 is a cylindrical tension spring with round hooks at both ends.

[0108] Specific implementation method eight: Combination Fig.13 and Fig.14 This embodiment is described. This embodiment further limits the liquid-cooled speed regulating magnetic clutch for ships described in the first embodiment. In this embodiment, the magnetic clutch further includes a temperature sensor 16, a measuring slip ring 17 and a signal line 16-1.

[0109] Each permanent magnetic disk includes a disk-shaped magnet support aluminum plate 1-2, a permanent magnet back iron 1-3 and a plurality of permanent magnets 1-1.

[0110] A plurality of grooves are evenly arranged in the circumferential direction on one disk surface of the magnet support aluminum plate 1-2, and a permanent magnet 1-1 is arranged in each groove. The permanent magnet back iron 1-3 covers the grooved surface of the magnet support aluminum plate 1-2 to seal the permanent magnet 1-1.

[0111] The temperature sensor is arranged on the temperature measuring hole reserved on the magnet supporting aluminum plate 1-2, and the temperature measuring sensor 16 is used to detect the temperature of the permanent magnet 1-1;

[0112] Signal line holes are provided on the permanent magnetic disk and the transmission shaft 8. The signal line 16-1 of the temperature sensor enters the slip ring inner ring 17-1 of the measuring slip ring 17 on the transmission shaft 8 through the signal line hole, enters the slip ring outer ring 17-2 from the slip ring inner ring 17-1 to output the signal line 16-1, and the slip ring outer ring 17-2 is fixed to the bracket with a limit bolt 17-3.

[0113] In this embodiment, Fig.14 For Fig.13 The picture taken from the right view, Fig.14 The solid line in the figure is the line of the magnet supporting the aluminum plate 1-2. The permanent magnets are fan-shaped and evenly distributed along the circumference.

[0114] Specific implementation method 9: This implementation method further limits the liquid-cooled speed-regulating magnetic clutch for ships described in specific implementation method 8. In this implementation method, the gap in the signal line hole is filled with sealant.

[0115] In this embodiment, from Figure 3 From above, when the regulating mechanism 18 is pulled axially, the annular disk drives the No. 1 bearing 11 to move rightward, thereby driving the permanent magnetic disk on the No. 2 bearing to move rightward, thereby adjusting the gap between the permanent magnetic disk assembly and the conductor disk assembly.

[0116] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A liquid-cooled speed-regulating magnetic clutch for a ship, the magnetic clutch comprising a permanent magnetic disc assembly (1), a conductor disc assembly (2), a bracket (4), a conductor disc connecting flange (5), an air gap adjustment mechanism, a transmission shaft (8) and a drive shaft (9), One end of the transmission shaft (8) is connected to one end of the permanent magnet disk assembly (1), and the other end of the transmission shaft (8) is connected to the load end. It is characterized in that The magnetic clutch further comprises a housing (3), a floating seal (6), a cooling mechanism (7), a support bearing (10), an O-ring (13) and a sleeve (8-1). The support (4) is composed of two supporting plates that support each other. The permanent magnet disk assembly (1) comprises two permanent magnet disks and a connecting rod mechanism, wherein the two permanent magnet disks are connected by the connecting rod mechanism. The conductor disc assembly (2) comprises two conductor discs and a connecting rod, wherein the two conductor discs are connected by the connecting rod. The cover (3) is fixed on a side wall of a support plate, the permanent magnetic disk assembly (1) and the conductor disk assembly (2) are both arranged inside the cover (3), and the permanent magnetic disk assembly (1) is arranged inside the conductor disk assembly (2). The transmission shaft (8) passes through the center of the bracket (4) and enters the interior of the housing (3). A permanent magnetic disk is sleeved on the transmission shaft (8). A support bearing (10) is sleeved on the transmission shaft (8) between the inner ring of the bracket (4) and the transmission shaft (8). A sleeve (8-1) is connected to the inner ring of the bracket (4). The support bearing (10) is installed between the transmission shaft (8) and the sleeve (8-1). The air gap adjustment mechanism does not rotate with the permanent magnetic disk assembly (1) and is used to adjust the air gap between the permanent magnetic disk assembly (1) and the conductor disk assembly (2) to achieve clutching and load end speed regulation. The air gap adjustment mechanism comprises a No. 1 bearing (11), a drive sleeve (12), a wrench (18) and a positioning ring disk (14). The driving sleeve (12) is formed by coaxially connecting two cylinders with different diameters. The two cylinders with different diameters are an integrated structure. The inner diameter of one cylinder is sleeved on the sleeve (8-1). An O-type sealing ring (13) is installed between a support plate and the outer cylindrical surface of one cylinder. A gap is left between the inner circumference of the other cylinder and the transmission shaft (8). A No. 1 bearing (11) is sleeved on the outer circumference of the other cylinder. The inner ring surface of another permanent magnetic disk is fixedly sleeved on the No. 1 bearing (11). A circular ring disk (14) is fixedly sleeved on the end of the other cylinder. The circular ring disk (14) limits the No. 1 bearing (11) in the axial direction. A wrench (18) is arranged on one cylinder. The driving shaft (9) passes through the center of the cover (3). A conductor disk connecting flange (5) is sleeved on the driving shaft (9) to support a conductor disk on the driving shaft (9). The cover (3) and the conductor disk connecting flange (5) are connected through a floating seal (6). Another conductor disk is suspended and sleeved on the transmission shaft (8). At least one cooling mechanism (7) is arranged on the inner wall of a support plate and the outer wall of the housing (3), the spray port (7-1) of the cooling mechanism faces the back iron (2-3) of the two conductor disks, and the cooling mechanism (7) is used to cool the two conductor disks; Two cooling mechanisms (7) are respectively arranged on the outer wall of the housing (3) and the inner wall of a support plate. The two cooling mechanisms (7) on the outer wall of the housing (3) are arranged in a mirror image along a vertical midplane where the axis of the transmission shaft (8) is located. Two cooling mechanisms (7) on the inner wall of a support plate are arranged in a mirror image along a vertical mid-plane where the axis of the transmission shaft (8) is located; The floating seal (6) comprises a connecting housing (6-1), two springs (6-2) and two sealing rings (6-3). The connecting shell (6-1) comprises an upper shell (6-4) and a lower shell (6-5), wherein the upper shell (6-4) and the lower shell (6-5) are connected to form a circular ring, wherein the inner ring surface of the circular ring is provided with two circular grooves along the circular direction, wherein a sealing ring (6-3) is arranged in the circular direction in each circular groove, and a spring (6-2) is arranged on the outer surface of the sealing ring, wherein the spring (6-2) is used to press the sealing ring (6-3) so that the sealing ring (6-3) is in close contact with the conductor disk connecting flange (5). The connecting shell (6-1) is connected to the inner annular surface of the cover shell (3).

2. The liquid-cooled speed-regulating magnetic clutch for ships according to claim 1, characterized in that: The magnetic clutch also includes two cooling channels, which are respectively arranged on the back irons (2-3) of the two conductor discs. Each cooling channel includes a channel back plate (15-1) and an adjustment pad (15-2). Two flow channel back plates (15-1) are respectively fixed to the back irons (2-3) of the two conductor disks by bolts, an adjustment pad (15-2) is arranged between the back iron (2-3) of each conductor disk and each flow channel back plate (15-1), and the adjustment pad (15-2) is sleeved on the bolts, and each flow channel back plate is provided with an annular liquid collecting structure which is 45 degrees with the flow channel near the injection port (7-1) of the cooling mechanism.

3. The liquid-cooled speed-regulating magnetic clutch for ships according to claim 1, characterized in that: The cover shell (3) comprises an upper cover shell (3-1) and a lower cover shell (3-2), and the upper cover shell (3-1) and the lower cover shell (3-2) are fixed by bolt connection. The magnetic clutch also includes a vent cap (3-3), a collecting groove (3-4) and a housing return flange (3-5). The vent cap (3-3) is arranged on the upper cover shell (3-1). A collecting groove (3-4) is provided at the bottom of the lower casing (3-2), the collecting groove (3-4) is connected to the casing return flange (3-5), and the collecting groove (3-4) is used to collect the cooling medium sprayed by the cooling mechanism (7); the casing return flange (3-5) is connected to an external water system to output the cooling medium to the outside.

4. The liquid-cooled speed-regulating magnetic clutch for ships according to claim 1, characterized in that: A reflux hole (6-51) is provided on the inner side wall of the lower shell (6-5), and the reflux hole (6-51) is connected to the interior of the cover shell (3).

5. The liquid-cooled speed-regulating magnetic clutch for ships according to claim 1 or 3, characterized in that: Each spring (6-2) is a cylindrical extension spring with round hooks at both ends.

6. The liquid-cooled speed-regulating magnetic clutch for ships according to claim 1, characterized in that: The magnetic clutch further comprises a temperature sensor (16), a measuring slip ring (17) and a signal line (16-1). Each permanent magnetic disk comprises a disk-shaped magnet supporting aluminum plate (1-2), a permanent magnet back iron (1-3) and a plurality of permanent magnets (1-1). A plurality of grooves are evenly arranged in a circumferential direction on a disk surface of a magnet supporting aluminum plate (1-2), a permanent magnet (1-1) is arranged in each groove, and a permanent magnet back iron (1-3) covers the grooved surface of the magnet supporting aluminum plate (1-2) to seal the permanent magnet (1-1). The temperature measuring sensor is arranged on a temperature measuring hole reserved on the magnet supporting aluminum plate (1-2), and the temperature measuring sensor (16) is used to detect the temperature of the permanent magnet (1-1); Signal line holes are provided on the permanent magnetic disk and the transmission shaft (8); a signal line (16-1) of a temperature measuring sensor enters a slip ring inner ring (17-1) of a measuring slip ring (17) on the transmission shaft (8) through the signal line hole, enters a slip ring outer ring (17-2) from the slip ring inner ring (17-1) to output the signal line (16-1); and the slip ring outer ring (17-2) is fixed to a bracket by a limit bolt (17-3).

7. The liquid-cooled speed-regulating magnetic clutch for ships according to claim 6, characterized in that: The signal line hole gap is filled with sealant.

Images