Distributed permanent magnet journal sticking type axle generator and debugging, mounting and dismounting method thereof

Abstract

The invention belongs to the technical field of marine axle generator manufacturing, and particularly relates to a distributed permanent magnet journal sticking type axle generator, a stator, a rotor, a front split protective large cover (21), a rear split protective large cover (27), a split protective small cover (28) and a tensioning sleeve of the generator are of split structures, and the stator comprises two split stators, namely a left stator (1) and a right stator (2). The two split stators are movably connected; the rotor comprises two split rotors with the same structure, each split rotor (15) comprises a plurality of rotor cores (11), magnetic steel (14) and a split rotor bracket (13), and the two split rotors (15) are movably connected; the tensioning sleeve comprises two split tensioning sleeves (19) of the same structure, and the two split tensioning sleeves are movably connected. And the sectioned stator, the sectioned rotor and the sectioned tensioning sleeve (19) are sequentially sleeved from outside to inside to form a semi-ring shape.

Description

Technical Field

[0001] The present invention relates to the technical field of manufacturing marine shaft-engaged shaft-belt generators, and more specifically to a distributed permanent magnet shaft-engaged shaft-belt generator and a debugging, installation and removal method thereof. Background Art

[0002] With the recent implementation of the carbon emission intensity index and existing ship energy efficiency index, it is required to implement graded management of emissions from sailing ships. For sailing ships that do not meet the rating requirements, specific measures must be given to make improvements within a time limit. For sailing ships that fail to meet the rating requirements continuously, their navigation will be affected. The mandatory implementation of the energy efficiency index and rating management will have a far-reaching impact on the shipping industry.

[0003] Energy saving can not only reduce fuel consumption, but also reduce CO2 emissions. As one of the important energy-saving devices, the low-speed shaft generator can make full use of the main engine's spare power to generate electricity, improve ship energy utilization, and reduce ship carbon emissions. It is an effective means for existing ships to improve their energy efficiency index and ratings.

[0004] For the installation of shaft-belt generators on existing ships, existing technologies, such as "A half-type permanent magnet shaft-belt generator and its assembly method" (patent number 202311017261.X), split the motor stator and rotor into two parts, solving the problem of installing shaft-belt generators on existing ships without changing the original structure and layout. In the existing technology, half of the stator and rotor are fixed as one with an L-shaped connecting piece during the installation process to avoid magnetic attraction between the permanent magnet and the surrounding iron parts. However, in the actual installation process, it is necessary to first evaluate the existing ships. It is found that the hoisting space of many existing ships is limited, and it is impossible to fix half of the stator and rotor and then hoist them as a whole. For example, when selecting the installation position of the intermediate shaft, there are many pipelines and other obstacles arranged intermittently below, so that there is no continuous shaft section for the motor to be installed. Finally, the generator cannot be installed due to limited hoisting and installation space, or it brings great difficulty to subsequent repair and maintenance. The motor has no fault tolerance and cannot be used after failure.

[0005] The existing permanent magnet shaft-clamped generator is large in size and heavy in weight. It is difficult to hoist it for the reconstruction of old ships, and the installation space is limited. Since ocean-going ships generally sail for a long time at sea, if a fault occurs, it needs to be dismantled within three hours to avoid adding additional load to the main engine. The large size and weight will also bring great difficulties to disassembly and assembly. It is difficult to achieve complete disassembly within 3 hours, and the entire generator will not work after a fault. The installation space and assembly space for the generator in the reconstruction of old ships are not sufficient. It is very difficult to adjust the motor air gap in a limited space and ensure that the air gap is uniform. It is often necessary to enlarge the motor air gap to avoid faults caused by uneven adjustment. Summary of the invention

[0006] In order to solve the problems in the prior art that the marine generator is large in size and weight, but has limited lifting space and is not easy to lift, disassemble and replace; the generator is not fault-tolerant and cannot be used after a failure, the present invention provides a distributed permanent magnet shaft-mounted generator and a method for debugging, installing and removing the generator.

[0007] In order to achieve the above object, the present invention is implemented by the following technical solutions:

[0008] In a first aspect of the present invention, a distributed permanent magnet shaft-mounted generator is provided, comprising a module unit, the module unit comprising a stator, a rotor and a tension sleeve, the rotor is arranged in the stator, the tension sleeve is arranged in the rotor, the stator, the rotor and the tension sleeve are of a petal structure and are coaxially arranged;

[0009] The stator comprises two split stators facing each other, a split stator split housing and a split stator core with windings fixed in the split housing, the upper and lower ends of the two split housings are respectively connected by first mounting bolts, and the tail of the first mounting bolt is screwed with a first mounting nut; a housing foot is provided at the lower side of the split stator, the housing foot comprises a foot support and a housing mounting leg, the foot support is located at the bottom of the housing mounting leg, the foot support and the housing mounting leg are connected by a second mounting bolt, and the tail of the second mounting bolt is screwed with a second mounting nut;

[0010] The rotor comprises two split rotors facing each other, the split rotor comprises a plurality of rotor cores and a split rotor bracket, the plurality of rotor cores are sequentially connected and arranged outside the split rotor bracket, a plurality of magnets are embedded side by side inside the rotor core close to the split stator; the split rotor bracket is a semi-annular structure with a hollow middle, the two split rotor brackets are connected by a third mounting bolt, a third mounting nut is screwed at the tail of the third mounting bolt; the split rotor bracket is connected to the plurality of rotor cores by a fourth mounting bolt respectively;

[0011] The tension sleeve comprises two split tension sleeves facing each other, and the split tension sleeves have fastening bolts for fastening the rotor and the main shaft sandwiched between the two split tension sleeves;

[0012] At least two module units are connected to the main shaft and arranged side by side, and two adjacent module units are connected by connecting bolts; protective covers are respectively provided on the outer sides of the module units at both ends, and the protective covers are of a petal structure, and the protective covers include two relatively arranged large petal protective covers and two relatively arranged small petal protective covers, the two large petal protective covers are installed on the petal housing through a first stop, and the two small petal protective covers are connected to the large petal protective cover through a second stop, and the main shaft is clamped in the two small petal protective covers.

[0013] In the preferred embodiment, a keyway is provided in the rotor core near the split rotor bracket, a rotor fixing key is embedded in the keyway, and the rotor fixing key is threadedly connected to the fourth mounting bolt.

[0014] In the preferred embodiment, axial positioning pins are installed on both sides of the butt joints at the upper and lower ends of the two split housings along the main axis direction.

[0015] Under the preferred embodiment, one end of the casing mounting leg away from the main shaft is bent vertically downward along the outer edge of the anchor bracket to form a first end face, a first carbide slider is provided between the first end face and the outer edge of the anchor bracket, a first oil storage tank is provided on the surface of the first carbide slider close to the anchor bracket, a first oil filling hole is provided in the first carbide slider, the first oil filling hole passes through the first carbide slider and is connected to the first oil storage tank; a second carbide slider is provided between the bottom of the casing mounting leg and the top of the anchor bracket, a second oil storage tank is provided on the surface of the second carbide slider close to the anchor bracket, a second oil filling hole is provided in the first carbide slider, the second oil filling hole passes through the first carbide slider and is connected to the second oil storage tank.

[0016] In a preferred embodiment, a first oil injection channel communicating with the first oil injection hole is provided in the first end surface; and a second oil injection channel communicating with the second oil injection hole is provided in the bottom of the housing mounting leg.

[0017] In a preferred embodiment, the first end surface has a bolt through hole, an adjusting bolt with a locking nut is installed in the bolt through hole, and the bottom end of the adjusting bolt abuts against the anchor bracket.

[0018] In the preferred embodiment, force-bearing plates are provided on both sides of the casing mounting legs along the main axis direction, and the force-bearing plates are connected to the casing mounting legs via mounting and disassembly bolts with disassembly bolt locking nuts.

[0019] A second aspect of the present invention provides a method for debugging the above-mentioned distributed permanent magnet shaft-mounted generator, which is used to install and debug the generator before leaving the factory to ensure that the generator meets the factory requirements, and includes the following steps:

[0020] Sa1, connect multiple rotor cores without embedded magnetic steel in series and fix them outside the split rotor bracket through third mounting bolts to form a non-magnetic split rotor;

[0021] Sa2, repeat step Sa1, two non-magnetic steel split rotors are grouped together, and multiple groups of non-magnetic steel split rotors are assembled;

[0022] Sa3, connect the two petal positioning covers into a full circle and fix them on the factory tooling shaft, then connect and fix the two front petal protection covers in an up-and-down manner to form a full circle and connect and fix them to the two petal positioning covers through the second stop;

[0023] Sa4. Place the left-petal stator and the right-petal stator symmetrically on both sides of the factory tooling shaft and bring them close to the factory tooling shaft. The left-petal stator and the right-petal stator are respectively connected with the two front petal protective covers through the first stop. The left-petal stator and the right-petal stator are connected together with the first mounting bolt and fastened with the first mounting nut to form a complete stator. The anchor bracket and the housing mounting leg are connected together with the second mounting bolt and fastened with the second mounting nut.

[0024] Sa5. Place two non-magnetic steel split rotors symmetrically on both sides of the factory tooling shaft, connect the two split rotor brackets with the third mounting bolt and tighten them with the third mounting nut to form a non-magnetic steel rotor, and then push two split tension sleeves between the non-magnetic steel rotor and the factory tooling shaft, so that the inner walls of the two split tension sleeves fit the outer wall of the factory tooling shaft, and the outer walls of the two split tension sleeves fit the inner wall of the non-magnetic steel rotor;

[0025] Sa6. Push the non-magnetic steel rotor and the two split tension sleeves into the stator, align the split stator core with windings and the rotor core, and adjust the fastening bolts on the two split tension sleeves to create an interference fit between the outer diameter of the split tension sleeves and the inner diameter of the non-magnetic steel rotor;

[0026] Sa7. Adjust the adjusting bolts to fine-tune the stator radially and check the air gap uniformity between the stator and rotor. When the air gap uniformity is not greater than 2%, tighten the adjusting bolts with the locking nuts to fix the stator position.

[0027] Sa8, embed the magnetic steel into the rotor core to make the rotor magnetic;

[0028] Sa9. Remove the two petal positioning covers to form a module unit, make the generator run normally, conduct a pre-delivery test on the generator, check the wiring of the generator and the direction of the magnet inlay, and ensure that the generator meets the factory requirements;

[0029] Sa10, repeat steps Sa4 to Sa9 to install and debug multiple module units;

[0030] Sa11. After all the module units are installed and debugged, loosen the fourth mounting bolt of the last module, allow the rotor core to be adsorbed to the inner diameter of the stator, and keep the fourth mounting bolt connected to the fourth threaded hole on the rotor fixing key through the fourth mounting threaded through hole on the split rotor bracket, but do not tighten it;

[0031] Sa12, remove the third mounting bolt and the third mounting nut connecting the two split rotor brackets, and the two split rotors are adsorbed onto the left and right stators;

[0032] Sa13, loosen the locking nut and adjust the position restriction of the stator by the adjusting bolt; remove the first mounting bolt, the first mounting nut, the second mounting bolt and the second mounting nut in petals to form a left petal stator and rotor and a right petal stator and rotor;

[0033] Sa14, repeat steps Sa11 to Sa13, and remove the remaining module units one by one;

[0034] Sa15. Remove the two front protective covers.

[0035] A third aspect of the present invention provides a method for installing the above-mentioned distributed permanent magnet shaft-engaged generator, characterized in that it comprises the following steps:

[0036] Sb1. Install and fix the two petal positioning covers on the main shaft of the ship, connect and fix the two front petal protection covers in an up-and-down manner to form a full circle, and install them together with the two petal positioning covers to form a positioning stop concentric with the main shaft of the ship;

[0037] Sb2. Place the left-lobe stator and the right-lobe stator symmetrically on both sides of the ship's main shaft and bring them close to the ship's main shaft, so that the stoppers of the left-lobe stator and the right-lobe stator are installed in coordination with the stoppers of the front petal protection cover, and fix the left-lobe stator and the right-lobe stator together with the first bolt and the first mounting nut; connect and tighten the second mounting bolt through the second bolt hole on the anchor bracket housing mounting leg with the second mounting nut;

[0038] Sb3. Use the third mounting bolt to pass through the third bolt hole on the two split rotor brackets and connect and fix with the third mounting nut to make the two rotor brackets round; push the two split tension sleeves between the split rotor ship main shafts, so that the inner walls of the two split tension sleeves fit the outer wall of the ship main shaft, and the outer walls of the two split tension sleeves fit the inner wall of the rotor, and then adjust the fastening bolts of the two split tension sleeves to make the outer diameter of the split tension sleeves and the inner diameter of the rotor have an interference fit; the two split tension sleeves are respectively located in the two split rotors;

[0039] Sb4, tighten the fourth mounting bolt to allow the rotor core to separate from the inner diameter of the stator to form an air gap;

[0040] Sb5. Repeat steps Sb2 to Sb4 to install multiple module units, with adjacent surfaces of each module unit being bonded to each other;

[0041] Sb6, install the two-petal protective large cover and the two-petal protective small cover.

[0042] In a fourth aspect of the present invention, a method for dismantling the above-mentioned distributed permanent magnet shaft-engaged generator is provided, which quickly dismantles the module unit located in the middle and reassembles the remaining module units to ensure the normal operation of the generator. The module unit includes a second module unit located in the middle, and a first module unit and a second module unit located on both sides of the front and rear of the second module unit, respectively, and includes the following steps:

[0043] Sc1. When the second module unit fails and needs to be quickly detached, the rear petal protection large cover and the petal protection small cover are removed;

[0044] Sc2, loosen the fourth mounting bolts on the second module unit and the third module unit, so that the rotor core is adsorbed to the inner diameter of the stator, and the fourth mounting bolt remains connected to the fourth threaded hole on the rotor fixing key through the fourth mounting threaded through hole on the split rotor bracket, but is not tightened;

[0045] Sc3, remove the connecting bolts between the first module unit and the second module unit, tighten the disassembly bolts connected to the threaded holes of the casing mounting legs of the third module unit, and pull out the second module unit and the third module unit axially. When the width between the first module unit and the second module unit is greater than the width of the connection stop, remove the connecting bolts between the second module unit and the third module unit, continue to tighten the disassembly bolts connected to the threaded holes of the casing mounting legs of the third module unit. When the width between the second module unit and the third module unit is greater than the width of the connection stop, lift out the second module unit;

[0046] Sc4. Remove the disassembly bolts connected to the threaded holes of the casing mounting legs of the third module unit, add a solid pad between the casing mounting legs of the third module unit and the load-bearing plate, screw the disassembly bolts into the threaded holes, and push the third module unit to the original position of the second module unit until the third module unit and the mounting stop of the first module unit are installed in place;

[0047] Sc5. Tighten the connecting bolts between the third module unit and the first module unit;

[0048] Sc6. Tighten the fourth mounting bolt on the rotor of the third module unit to separate the rotor core from the inner diameter of the stator to form an air gap;

[0049] Sc7. Reinstall the removed rear protective large cover and split protective small cover.

[0050] Beneficial effects of the present invention

[0051] The present invention is composed of a plurality of modular units. Firstly, it is designed according to the hoisting conditions and installation space of most ocean-going ships, thereby reducing the difficulty of installation. Secondly, the distributed structure can realize the interchangeability and increase and decrease of module units, thereby improving the versatility. During the navigation process, the module units are used as spare machines, which is convenient for replacement and for increasing the capacity of the whole machine. Thirdly, the left and right petals are directly mounted on the shaft, and the shaft can be directly mounted after hoisting without rotating the installation. The disassembly and assembly process is reasonably optimized to ensure uniform air gap. Fourthly, it is fault-tolerant, and the faulty module units can be quickly removed without affecting the normal operation of other module units. Fifthly, it has the ability to detect air gaps and can provide early warning. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 and Figure 2 It is a schematic diagram of the structure of the left-petal stator and the right-petal stator of the present invention;

[0053] Figure 3 It is a schematic diagram of the structure of the split-petal rotor of the present invention;

[0054] Figure 4 It is a schematic diagram of the installation structure of the rotor core and the rotor fixing key of the present invention;

[0055] Figure 5 Schematic diagram of the rotor structure of the present invention;

[0056] Figure 6 This is a schematic diagram of the assembly state of a single module of the present invention before leaving the factory;

[0057] Figure 7 This is a schematic diagram of the multi-module assembly state of the present invention before leaving the factory;

[0058] Figure 8 This is a schematic diagram of the multi-module assembly of the present invention before leaving the factory

[0059] Fig. 9 It is a schematic diagram of the structure of the left-petal stator and rotor and the right-petal stator and rotor of the present invention;

[0060] Fig.10 This is a schematic diagram of the on-site single module assembly state of the present invention;

[0061] Fig.11 It is a schematic diagram of the on-site multi-module assembly state of the present invention;

[0062] Fig.12 and Fig.13 This is a schematic diagram of the multi-module assembly completion state of the present invention;

[0063] Fig.14 It is a schematic diagram of the disassembly design of the present invention.

[0064] In the figure, 1-left split stator; 2-right split stator; 3-second mounting bolt; 4-anchor bracket; 5-casing mounting leg; 6-second mounting nut; 7-first mounting nut; 8-first mounting bolt; 9-locking nut; 10-adjusting bolt; 11-rotor core; 12-fourth mounting bolt; 13-split rotor bracket; 14-magnetic steel; 15-split rotor; 16-rotor fixing key; 17-third mounting bolt; 18-third mounting nut; 19-split tension sleeve; 20-axial positioning pin; 21-front split protective cover; 22-split positioning cover; 23-factory tooling shaft; 24-left petal stator and rotor; 25-right petal stator and rotor; 26-ship main shaft; 27-rear petal protection large cover; 28-petal protection small cover; 29-first module unit; 30-second module unit; 31-third module unit; 32-air gap sensor; 33-junction box; 34-first carbide slider; 35-first oil filling hole; 36-first oil storage tank; 37-second carbide slider; 38-second oil filling hole; 39-second oil storage tank; 40-stress plate; 41-disassembly bolt locking nut; 42-installation and disassembly bolt. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0066] Detailed Overview of the Invention

[0067] like Figures 1 to 14 As shown, a distributed permanent magnet shaft-mounted generator includes a module unit, which includes a stator, a rotor and a tension sleeve. The rotor is arranged in the stator, and the tension sleeve is arranged in the rotor. The stator, rotor and tension sleeve are petal structures and are coaxially arranged.

[0068] The stator comprises two split stators facing each other, a split stator split housing and a split stator core with windings fixed in the split housing, the upper and lower ends of the two split housings are respectively connected by a first mounting bolt 8, and the tail of the first mounting bolt 8 is screwed with a first mounting nut 7; a housing foot is provided at the lower side of the split stator, the housing foot comprises a foot bracket 4 and a housing mounting leg 5, the foot bracket 4 is located at the bottom of the housing mounting leg 5, the foot bracket 4 and the housing mounting leg 5 are connected by a second mounting bolt 3, and the tail of the second mounting bolt 3 is screwed with a second mounting nut 6.

[0069] The rotor comprises two split rotors 15 arranged facing each other, the split rotor 15 comprises a plurality of rotor cores 11 and a split rotor bracket 13, the plurality of rotor cores 11 are sequentially connected and arranged outside the split rotor bracket 13, a plurality of magnets 14 are embedded side by side inside the rotor core 11 close to the split stator; the split rotor bracket 13 is a semi-annular structure with a hollow middle, the two split rotor brackets 13 are connected by a third mounting bolt 17, a third mounting nut 18 is screwed to the tail of the third mounting bolt 17; the split rotor bracket 13 is connected to the plurality of rotor cores 11 by fourth mounting bolts 12 respectively.

[0070] The tension sleeve comprises two split tension sleeves 19 facing each other, and the split tension sleeves 19 have fastening bolts for fastening the rotor and the main shaft sandwiched between the two split tension sleeves 19 .

[0071] At least two module units are connected to the main shaft and arranged side by side, and two adjacent module units are connected by connecting bolts; the module units located at both ends are respectively provided with protective covers on the outer sides, and the protective covers are petal structures, and the protective covers include two relatively arranged large petal protective covers and two relatively arranged small petal protective covers 28, the two large petal protective covers are installed on the petal housing through the first stop, and the two small petal protective covers 28 are connected to the large petal protective covers through the second stop, and the main shaft is clamped in the two small petal protective covers 28.

[0072] A keyway is provided in the rotor core 11 near the split rotor bracket 13 , in which a rotor fixing key 16 is embedded. The rotor fixing key 16 is threadedly connected to the fourth mounting bolt 12 .

[0073] Axial positioning pins 20 are installed on both sides of the butt joints at the upper and lower ends of the two split housings along the main axis direction.

[0074] One end of the casing mounting leg 5 away from the main shaft is bent vertically downward along the outer edge of the anchor bracket 4 to form a first end face, and a first carbide slider 34 is provided between the first end face and the outer edge of the anchor bracket 4. A first oil storage tank 36 is provided on the surface of the first carbide slider 34 on one side close to the anchor bracket 4, and a first oil filling hole 35 is provided in the first carbide slider 34, and the first oil filling hole 35 passes through the first carbide slider 34 and is connected to the first oil storage tank 36; a second carbide slider 37 is provided between the bottom of the casing mounting leg 5 and the top of the anchor bracket 4, and a second oil storage tank 39 is provided on the surface of the second carbide slider 37 on one side close to the anchor bracket 4, and a second oil filling hole 38 is provided in the first carbide slider 34, and the second oil filling hole 38 passes through the first carbide slider 34 and is connected to the second oil storage tank 39.

[0075] A first oil injection channel communicating with the first oil injection hole 35 is provided in the first end surface; a second oil injection channel communicating with the second oil injection hole 38 is provided in the bottom of the housing mounting leg 5 .

[0076] The first end surface has a bolt through hole, in which an adjusting bolt 10 with a locking nut 9 is installed, and the bottom end of the adjusting bolt 10 abuts against the anchor bracket 4.

[0077] The housing mounting legs 5 are provided with force-bearing plates 40 on both sides along the main axis direction, and the force-bearing plates 40 are connected to the housing mounting legs 5 via mounting and disassembly bolts 42 with disassembly bolt locking nuts 41 .

[0078] A method for debugging the above-mentioned distributed permanent magnet shaft-mounted generator, and ensuring that it meets the optimal solution required for on-site installation after leaving the factory before leaving the factory, includes the following steps:

[0079] S1. Assemble the split-petal tension sleeve, the split-petal rotor and the split-petal stator in sequence from inside to outside to form a split-petal motor;

[0080] S2. Place two split motors on both sides of the ship's main shaft, and fix the two split stators, the two split rotors, and the two split tension sleeves with bolts respectively;

[0081] S3, adjusting the tension bolts provided on the petal tension sleeve to fix the rotor on the main shaft of the ship;

[0082] S4. Use bolts to splice the two petal positioning covers together, connect them in series to the main shaft of the ship, install the front petal protection cover, and clamp it in the petal housing to obtain a module unit;

[0083] S5. Repeat steps 2 to 4 to obtain multiple module units.

[0084] Specifically, the above debugging method installs and debugs the generator before leaving the factory to ensure that the generator meets the factory requirements, including the following steps:

[0085] Sa1. Multiple rotor cores 11 without embedded magnetic steel 14 are connected in series and fixed to the outside of the split rotor bracket 13 through the third mounting bolts 12 to form a non-magnetic split rotor.

[0086] Sa2. Repeat step Sa1, and assemble multiple groups of non-magnetic steel split rotors, with two non-magnetic steel split rotors as a group.

[0087] Sa3, connect the two petal positioning covers 22 into a full circle and fix them on the factory tooling shaft 23, then connect and fix the two front petal protective covers 21 in an up and down distribution manner to form a full circle and connect and fix them to the two petal positioning covers 22 through the second stop.

[0088] Sa4. Place the left-petal stator 1 and the right-petal stator 2 symmetrically on both sides of the factory tooling axis 23 and move them close to the factory tooling axis 23. The left-petal stator 1 and the right-petal stator 2 are respectively connected to the two front petal protective covers 21 through the first stop. Use the first mounting bolt 8 to connect the left-petal stator 1 and the right-petal stator 2 together and fasten them with the first mounting nut 7 to form a complete stator. Use the second mounting bolt 3 to connect the anchor bracket 4 and the casing mounting leg 5 together and fasten them with the second mounting nut 6.

[0089] Sa5. Place the two non-magnetic steel split rotors symmetrically on both sides of the factory tooling shaft 23, connect the two split rotor brackets 13 with the third mounting bolts 17 and fasten them through the third mounting nuts 18 to form a non-magnetic steel rotor, and then push the two split tensioning sleeves 19 between the non-magnetic steel rotor and the factory tooling shaft 23, so that the inner walls of the two split tensioning sleeves 19 fit the outer wall of the factory tooling shaft 23, and the outer walls of the two split tensioning sleeves 19 fit the inner wall of the non-magnetic steel rotor.

[0090] Sa6. Push the non-magnetic steel rotor and the two split tension sleeves 19 into the stator, align the split stator core with windings and the rotor core 11, and adjust the fastening bolts on the two split tension sleeves 19 to create an interference fit between the outer diameter of the split tension sleeves 19 and the inner diameter of the non-magnetic steel rotor.

[0091] Sa7. Adjust the adjusting bolt 10 to perform radial fine-tuning on the stator and detect the uniformity of the air gap between the stator and the rotor. When the air gap uniformity is not greater than 2%, tighten the adjusting bolt 10 with the locking nut 9 to fix the position of the stator.

[0092] Sa8. Embed the magnetic steel 14 into the rotor core 11 to make the rotor magnetic.

[0093] Sa9. Remove the two petal positioning covers 22 to form a module unit, so that the generator can operate normally. Perform a pre-delivery test on the generator, check the wiring of the generator and the embedding direction of the magnet 14, and ensure that the generator meets the factory requirements.

[0094] Sa10. Repeat steps Sa4 to Sa9 to install and debug multiple module units.

[0095] Sa11. After all module units are installed and debugged, loosen the fourth mounting bolt 12 of the last module to allow the rotor core 11 to be adsorbed to the inner diameter of the stator. The fourth mounting bolt 12 remains connected to the fourth threaded hole on the rotor fixing key 16 through the fourth mounting threaded through hole on the split rotor bracket 13, but is not tightened.

[0096] Sa12, remove the third mounting bolt 17 and the third mounting nut 18 connecting the two split rotor brackets 13, and the two split rotors are adsorbed onto the left-lobe stator 1 and the right-lobe stator 2 separately.

[0097] Sa13, loosen the locking nut 9, and adjust the position restriction of the stator by the adjusting bolt 10; remove the first mounting bolt 8, the first mounting nut 7, the second mounting bolt 3, and the second mounting nut 6 in petals to form a left-petal stator and rotor 24 and a right-petal stator and rotor 25.

[0098] Sa14. Repeat steps Sa11 to Sa13 to remove the remaining module units one by one.

[0099] Sa15. Remove the two front petal protective covers 21.

[0100] A method for installing the above-mentioned distributed permanent magnet shaft-mounted generator is a method for quick on-site installation after the generator is installed and debugged by the above-mentioned debugging method, and it includes the following steps:

[0101] Sb1. Install and fix the two petal positioning covers 22 on the ship's main shaft 26, connect and fix the two front petal protective covers 21 in an up and down distribution manner to form a full circle, and install them together with the two petal positioning covers 22 to form a positioning stop concentric with the ship's main shaft 26.

[0102] Sb2. Place the left-lobe stator 1 and the right-lobe stator 2 symmetrically on both sides of the ship's main shaft 26 and move them close to the ship's main shaft 26, so that the stoppers of the left-lobe stator rotor 24 and the right-lobe stator rotor 25 cooperate with the stoppers of the front petal protective cover 21 for installation, and fix the left-lobe stator rotor 24 and the right-lobe stator rotor 25 together with the first bolt 8 and the first mounting nut 7; use the second mounting bolt 3 to connect and tighten with the second mounting nut 6 through the second bolt hole on the anchor bracket 4 and the casing mounting leg 5.

[0103] Sb3. Use the third mounting bolt 17 to pass through the third bolt hole on the two split rotor brackets 13 and connect and fix with the third mounting nut 18 to make the two split rotor brackets 13 round; push the two split tensioning sleeves 19 between the split rotor 15 and the ship's main shaft 26, so that the inner walls of the two split tensioning sleeves 19 fit the outer wall of the ship's main shaft 26, and the outer walls of the two split tensioning sleeves 19 fit the inner wall of the rotor, and then adjust the fastening bolts of the two split tensioning sleeves 19 to make the outer diameter of the split tensioning sleeves 19 and the inner diameter of the rotor produce an interference fit; the two split tensioning sleeves 19 are respectively located in the two split rotors 15.

[0104] Sb4. Tighten the fourth mounting bolt 12 to allow the rotor core 11 to separate from the inner diameter of the stator to form an air gap.

[0105] Sb5. Repeat steps Sb2 to Sb4 to install multiple module units, with adjacent surfaces of each module unit being bonded to each other.

[0106] Sb6. Install the two-petal protective large cover 27 and the two-petal protective small cover 28.

[0107] A method for dismantling the above-mentioned distributed permanent magnet shaft-engaged shaft-belt generator, quickly dismantling the module unit located in the middle, and reassembling the remaining module units to ensure the normal operation of the generator, the module unit includes a second module unit 30 located in the middle, and a first module unit 29 and a second module unit 30 located on both sides of the front and rear of the second module unit 30, respectively, comprising the following steps:

[0108] Sc1. When the second module unit 30 fails and needs to be quickly detached, the rear petal protection large cover 27 and the petal protection small cover 28 are removed.

[0109] Sc2. Loosen the fourth mounting bolt 12 on the second module unit 30 and the third module unit 31 so that the rotor core 11 is adsorbed to the inner diameter of the stator. The fourth mounting bolt 12 remains connected to the fourth threaded hole on the rotor fixing key 16 through the fourth mounting threaded through hole on the split rotor bracket 13, but is not tightened.

[0110] Sc3. Remove the connecting bolts between the first module unit 29 and the second module unit 30, tighten the disassembly bolts 42 connected to the threaded holes of the casing mounting legs 5 of the third module unit 31, and pull out the second module unit 30 and the third module unit 31 axially. When a width greater than the connection stop is generated between the first module unit 29 and the second module unit 30, remove the connecting bolts between the second module unit 30 and the third module unit 31, and continue to tighten the disassembly bolts 42 connected to the threaded holes of the casing mounting legs 5 of the third module unit 31. When a width greater than the connection stop is generated between the second module unit 30 and the third module unit 31, lift out the second module unit 30.

[0111] Sc4. Remove the disassembly bolt 42 connected to the threaded hole of the casing mounting leg 5 of the third module unit 31, add a solid pad between the casing mounting leg 5 of the third module unit 31 and the force plate 40, screw the disassembly bolt 42 into the threaded hole, and push the third module unit 31 to the position of the original second module unit 30 until the third module unit 31 and the mounting stop of the first module unit 29 are installed in place.

[0112] Sc5. Tighten the connecting bolts between the third module unit 31 and the first module unit 29.

[0113] Sc6. Tighten the fourth mounting bolt 12 on the rotor of the third module unit 31 to allow the rotor core 11 to separate from the inner diameter of the stator to form an air gap.

[0114] Sc7. Reinstall the removed rear protective large cover 27 and the petal protective small cover 28 in place.

[0115] The petal protection cover is equipped with an air gap sensor and an alarm light, which are electrically connected. When the air gap is insufficient, the air gap sensor will transmit a signal, and the alarm light will sound an alarm. In order to accurately identify the direction of the specific air gap, four air gap sensors are installed on the petal protection cover 27, and each air gap sensor is equipped with an alarm light. The distribution of the four air gap sensors is symmetrical about the center of the petal protection cover 27. The inner surfaces of the positioning platforms of two adjacent module units are attached to each other.

[0116] In order to ensure that each stator has the same wiring, we select pole slots that can achieve a parallel branch number greater than or equal to 2, and evenly divide the petals to a divisor of the maximum number of parallel branches; the stator winding uses high-temperature resistant and heat-dissipating potting glue, which can not only improve the motor protection level and protect the motor winding during transportation, but also improve the heat dissipation capacity of the motor. The stator adopts a left-right split structure, which is easy to hoist and install, has high versatility, and can reduce the number of spare parts.

[0117] The rotor adopts a block structure, including a rotor core 11. The number of rotor petals can be a multiple of the number of pole pairs; the rotor core 11 and the rotor bracket 13 are fixed with a third mounting bolt 12 for easy disengagement; the rotor pole quick disengagement structure can ensure that in the event of a fault, the requirement of eliminating the faulty unit within 3 hours is met and the normal operation of other units is guaranteed.

[0118] The casing foot adopts a split structure, which is composed of a foot bracket 4 and a casing mounting leg 5. There is a casing mounting leg 5 on each petal of the stator. The split structure is to reduce the maximum rotation radius of the motor, to move the force point close to the center of gravity of the motor to ensure installation stability, to facilitate adjustment, and to meet different center height requirements. The foot bracket 4 and the casing mounting leg 5 are installed and fixed with a second mounting bolt 3 and a second mounting nut 6.

[0119] There will still be a slight deviation after the generator is installed. The adjusting bolt 10 is used for radial fine-tuning after installation. After fine-tuning, the position of the adjusting bolt 10 is locked with the locking nut 9.

[0120] The split stator is assembled by the first mounting bolt 8 and the first mounting nut 7, and an axial positioning pin 20 is used in the middle of the two split stators to ensure the positioning requirements while reducing the difficulty of installation; the distributed structure makes full use of the installation space and reduces the requirements for on-site lifting and transportation space; the distributed structure allows arbitrary combination of module units to arbitrarily increase or decrease the capacity of the whole machine; the distributed structure makes it convenient to remove the faulty module unit in case of a fault during operation at sea, and adopts reduced capacity operation to ensure maximum utilization.

[0121] After the ship's main shaft 26 and the first module unit 29 are installed, the second module unit 30 is installed in the same steps as the first module unit 29, and the installation method of more module units is the same. After the first module unit 29, the second module unit 30, the third module unit 31, and so on, are assembled, the petal positioning cover 22 is replaced with the petal protection cover 28 to ensure the motor protection level; the junction box 33 adopts a modular design and is set on the top of the motor. When the motor changes capacity, the wiring can be changed at will; 4 air gap sensors 32 are installed in the 4 directions of the petal protection cover 28, each with an alarm light. When the air gap in any direction is insufficient, the corresponding sensor alarms to know which direction has insufficient air gap.

[0122] Distributed structure, each module unit adopts external wiring method, the wiring method can be adjusted according to the speed of the ship, the output voltage of the generator is optimized, and the output performance is optimized.

[0123] The equipment of the present invention adopts a modular design, which is convenient for installation and disassembly and can be combined arbitrarily; the requirements for hoisting, transportation and space requirements are reduced; the number of spare machines is reduced; it has high applicability, high replaceability, high cost performance, and has the ability to detect air gaps and can provide early warning.

[0124] Example 1

[0125] A distributed permanent magnet shaft-engaging generator comprises a stator, a rotor, a front flap protective cover 21, a rear flap protective cover 27, a flap protective cover 28 and a tension sleeve; the stator, the rotor, the front flap protective cover 21, the rear flap protective cover 27, the flap protective cover 28 and the tension sleeve are a flap structure, the stator comprises two flap stators, a left flap stator 1 and a right flap stator 2, the two flap stators are composed of a flap housing and a flap stator core with windings, and the two flap stators are assembled in a circular ring shape.

[0126] The windings of the left-lobe stator 1 and the right-lobe stator 2 are potted with a resin having a high thermal conductivity, which not only improves the heat dissipation capacity of the motor, but also ensures that the stator windings can be well protected during transportation and installation of the motor.

[0127] A fixing plate is provided on the top and bottom of the split housing, the fixing plate is perpendicular to the ground, and at least two first mounting bolt holes for serially connecting the first mounting bolt 8 are provided on the fixing plate, and the tail end of the first mounting bolt 8 is threadedly connected to the first mounting nut 7; the two split stators are movably connected to form a stator through the first mounting bolt 8.

[0128] A housing foot is arranged at the lower side of the split housing, and the housing foot comprises a foot bracket 4 and a housing mounting leg 5. The foot bracket 4 is arranged below the housing mounting leg 5. At least two second mounting bolt holes for serially connecting the second mounting bolt 3 are arranged at the same position of the foot bracket 4 and the housing mounting leg 5. The tail of the second mounting bolt 3 is threadedly connected to the second mounting nut 6; the foot bracket 4 and the housing mounting leg 5 are connected by the second mounting bolt 3. The foot bracket 4 comprises a triangular support frame and a top plate and a bottom plate respectively arranged at the top and bottom of the triangular support frame.

[0129] The rotor comprises two split rotors 15 of the same structure, the split rotors 15 are arranged in the split stator, the two split rotors 15 are movably connected, the split rotor 15 comprises a plurality of rotor cores 11; the split rotor 15 also comprises a split rotor support 13 sleeved in the rotor cores 11, the plurality of rotor cores 11 are movably connected to the split rotor support (12) in a semi-ring shape; the split rotor comprises a plurality of magnetic steels 14, the plurality of magnetic steels 14 are embedded in the rotor cores 11. The magnetic steels 14 have strong magnetism and can be adsorbed on any iron material.

[0130] The number of the rotor cores 11 is a multiple of the number of pole pairs. The rotor core 11 has a keyway for installing a rotor fixing key 16 , and the rotor fixing key 16 is provided with fourth threaded holes for installing fourth mounting bolts 12 at intervals.

[0131] The split rotor bracket 13 is a semi-annular structure with a hollow middle portion. Fourth bolt through holes are arranged at intervals on the outer circumference of the split rotor bracket 13 . The fourth mounting bolts 12 pass through the fourth mounting bolt through holes and are connected to the fourth threaded holes on the rotor fixing key 16 .

[0132] Third mounting bolt through holes for serially connecting third mounting bolts 17 are arranged at intervals on the split plane of the split rotor bracket 13. The third mounting bolts 17 pass through the third bolt through holes and are connected to the third mounting nuts 18 to connect the two split rotors 15 into one rotor.

[0133] The tension sleeve includes two split tension sleeves 19 of the same structure, which are sleeved inside the split rotor 15; the split stator, the split rotor 15 and the split tension sleeve 19 are sleeved in sequence from outside to inside to form a semi-ring. The split tension sleeve 19 has a fastening bolt for fastening the rotor and the main shaft sandwiched between the two split tension sleeves 19.

[0134] The above structure constitutes a module unit of a distributed permanent magnet shaft-mounted generator, with three module units arranged side by side through the main shaft, and two adjacent module units are connected by connecting bolts; the module units at both ends are respectively provided with protective covers on the outer sides, and the protective covers are petal structures, including two relatively arranged petal protective large covers and two relatively arranged petal protective small covers 28, the two petal protective large covers are installed on the petal casing through the first stop, the two petal protective small covers 28 are connected to the petal protective large cover through the second stop, and the main shaft is clamped in the two petal protective small covers 28.

[0135] Semi-arc grooves for mounting the axial positioning pins 20 are provided on both sides of the fixing plate.

[0136] At least two bolt holes are arranged on the bottom plate surface of the anchor bracket 4 .

[0137] A threaded hole is provided on the side of the base mounting leg 5 , and the threaded hole is used to connect in series with the bolt hole of the adjusting bolt 10 , and a locking nut 9 is provided on the adjusting bolt 10 .

[0138] A first carbide slider 34 and a second carbide slider 37 are respectively installed between the housing mounting leg 5 and the anchor bracket 4. The first carbide slider 34 and the second carbide slider 37 can be connected to the housing mounting leg 5 as a whole by riveting or welding.

[0139] The first carbide slider 34 has a first oil injection hole 35 and a first oil storage tank 36. The first oil storage tank 36 is used to store lubricating oil to ensure that when the motor is fixed for a long time, no rust will occur between the first carbide slider 34 and the anchor bracket 4, and the lubrication state is maintained. The first oil injection hole 35 can be used to inject lubricating oil or grease, and the friction coefficient between the first carbide slider 34 and the anchor bracket 4 can be reduced during the oil injection process.

[0140] The second carbide slider 37 has a second oil injection hole 38 and a second oil storage tank 39. The second oil storage tank 39 is used to store lubricating oil to ensure that when the motor is fixed for a long time, no rust will occur between the second carbide slider 37 and the anchor bracket 4, and the lubrication state is maintained. The second oil injection hole 38 can be used to inject lubricating oil or grease. During the oil injection process, the friction coefficient between the second carbide slider 37 and the anchor bracket 4 can be reduced.

[0141] A force-bearing plate 40 is respectively installed on the anchor bracket 4 of the first module unit 29 and the third module unit 31, and the force-bearing plate 40 has at least two threaded holes for installing and removing bolts 42 and removing bolt locking nuts 41 and at least two through holes for installing and removing bolts 42 and removing bolt locking nuts 41, and the casing mounting leg 5 of each module unit has a threaded hole for installing and removing bolts 42 and removing bolt locking nuts 41.

[0142] A distributed permanent magnet shaft-mounted generator provided by the present invention is composed of multiple modular units. First, it is designed according to the hoisting conditions and installation space of most ocean-going ships, which reduces the difficulty of installation; second, the distributed structure can realize the interchangeability and increase and decrease of module units, improves versatility, and uses module units as backup machines during navigation, which is convenient for replacement and convenient for increasing the capacity of the whole machine; third, the left and right petal direct shaft-mounted structure can directly mount the shaft after hoisting without rotating installation, reasonably optimizes the disassembly and assembly process, and ensures uniform air gap; fourth, it is fault-tolerant, and the faulty module unit can be quickly removed without affecting the normal operation of other module units.

[0143] Example 2

[0144] A method for debugging a distributed permanent magnet shaft-mounted generator is provided, wherein the generator is installed and debugged before leaving the factory to ensure that the generator meets the optimal solution required for on-site installation after leaving the factory. The distributed permanent magnet shaft-mounted generator is the same as that in Embodiment 1, and comprises the following steps:

[0145] Step 1: Use the third mounting bolt 12 to fix the rotor core 11 on the split rotor bracket 13, but do not embed the magnetic steel 14, so as to form two non-magnetic steel split rotors. At this time, the non-magnetic steel split rotors have no magnetism to the outside.

[0146] Step 2: Repeat step 1 to assemble a non-magnetic steel split rotor assembly.

[0147] Step 3, install and fix the two petal positioning covers 22 on the factory tooling shaft 23, connect and fix the two front petal protective covers 21 in an up and down distribution manner to form a full circle, and install them together with the two petal positioning covers 22 to form a positioning stop concentric with the factory tooling shaft 23.

[0148] Step 4. Place the left-petal stator 1 and the right-petal stator 2 symmetrically on both sides of the factory tooling shaft 23 and bring them close to the factory tooling shaft 23, so that the stop of the stator cooperates with the stop of the front petal protective cover 21 for installation, and use the first mounting bolt 8 and the first mounting nut 7 to fix the left-petal stator 1 and the right-petal stator 2 together to form a complete stator. Use the second mounting bolt 3 to pass through the second bolt hole on the anchor bracket 4 and the casing mounting leg 5 and connect and tighten with the second mounting nut 6. At this time, it can be ensured that the inner diameter of the stator is concentric with the factory tooling shaft 23.

[0149] Step 5: symmetrically place two arbitrary non-magnetic steel split rotors on both sides of the factory tooling shaft 23, and use the third mounting bolts 17 to pass through the third bolt holes on the two split rotor brackets 13 and connect and fix them with the third mounting nuts 18, so that the arbitrary two non-magnetic steel split rotors are movably connected to form a rotor; push the two split tension sleeves 19 between the installed rotor and the factory tooling shaft 23, so that the inner wall of the split tension sleeve 19 fits the outer wall of the factory tooling shaft 23, and the outer wall of the split tension sleeve 19 fits the inner wall of the rotor;

[0150] Step 6: Push the tension sleeve and the rotor into the stator, align the stator core and the rotor core, and adjust the fastening bolts of the two split tension sleeves 19 to create an interference fit between the outer diameter of the split tension sleeve 19 and the inner diameter of the rotor.

[0151] Step 7: fine-tune the stator radially by adjusting the adjusting bolt 10, and detect the uniformity of the air gap between the stator and the rotor. When the air gap uniformity is no more than 2%, use the locking nut 9 to lock the adjusting bolt 10 to ensure the fixed position of the stator.

[0152] Step 8: embed the magnetic steel 14 into the rotor core 11. At this time, the rotor shows obvious magnetism to the outside and can be adsorbed on any iron object.

[0153] Step 9: Remove the petal positioning cover 22 to form a module unit to ensure that the motor can operate normally, conduct factory tests on the motor, test the wiring of the motor and the direction of magnet inlaying, and ensure that the motor meets factory requirements.

[0154] Step 10: Repeat steps 4 to 9 to install other module units.

[0155] Step 11. After all module units are installed and debugged, loosen the fourth mounting bolt 12 of the last module and allow the rotor core 11 to be adsorbed to the inner diameter of the stator. The fourth mounting bolt 12 still remains connected to the third threaded hole on the rotor fixing key through the third mounting threaded through hole on the split rotor bracket 13, but is not tightened.

[0156] Step 12: Remove the connection between the third mounting bolt 17 and the third mounting nut 18 connecting the two split rotor brackets 13. At this time, the two split rotors 15 are separately adsorbed onto the left-petal stator 1 and the right-petal stator 2.

[0157] Step 13, loosen the locking nut 9, and adjust the position restriction of the stator by the adjusting bolt 10; remove the first mounting bolt 8, the first mounting nut 7, the second mounting bolt 3 and the second mounting nut 6 in petals to form a left petal stator and rotor 24 and a right petal stator and rotor 25.

[0158] Step 14: Repeat steps 11 to 13 to remove other module units;

[0159] Step 15: Remove the two front petal protective covers 21.

[0160] Among them, the debugging method of the distributed permanent magnet shaft-belt generator and the adsorption of the stator and rotor together are the key steps for the subsequent on-site installation.

[0161] Example 3

[0162] A method for installing a distributed permanent magnet shaft-mounted generator is a method for quickly installing a distributed permanent magnet shaft-mounted generator on site. The distributed permanent magnet shaft-mounted generator is the same as that in Embodiment 1 and is debugged in accordance with the process of Embodiment 2 before leaving the factory, and includes the following steps:

[0163] Step 1. Install and fix the two petal positioning covers 22 on the ship's main shaft 26, connect and fix the two front petal protective covers 21 in an up and down distribution manner to form a full circle, and install them together with the two petal positioning covers 22 to form a positioning stop concentric with the ship's main shaft 26.

[0164] Step 2. Place the left-lobe stator rotor 24 and the right-lobe stator rotor 25 symmetrically on both sides of the ship's main shaft 26 and close to the ship's main shaft 26, so that the stop of the stator cooperates with the stop of the front-lobe protective cover 21 for installation, and fix the left-lobe stator rotor 24 and the right-lobe stator rotor 25 together with the first bolt 8 and the first mounting nut 7; use the second mounting bolt 3 to pass through the second bolt hole on the anchor bracket 4 and the casing mounting leg 5 and install and tighten with the second mounting nut 6.

[0165] Step 3, use the third mounting bolt 17 to pass through the third bolt hole on the two split rotor brackets 13 and connect and fix it with the third mounting nut 18 to make the two split rotor brackets 13 round; push the two split tensioning sleeves 19 between the split rotor 15 and the ship's main shaft 26, so that the inner wall of the split tensioning sleeve 19 fits the outer wall of the ship's main shaft 26, and the outer wall of the split tensioning sleeve 19 fits the inner wall of the rotor, and then adjust the fastening bolts of the two split tensioning sleeves 19 to make the outer diameter of the split tensioning sleeve 19 and the inner diameter of the rotor have an interference fit; the two split tensioning sleeves 19 are respectively located in the two split rotors.

[0166] Step 4, tighten the fourth mounting bolt 12 to allow the rotor core 11 to separate from the inner diameter of the stator to form an air gap;

[0167] Step 5: Repeat steps 2 to 4 to install other module units, with adjacent surfaces of each module unit fitting together.

[0168] Step 6: Install the two-petal rear protective large cover 27 and the two-petal protective small cover 28.

[0169] After the assembly of multiple module units is completed, the petal positioning cover 22 is replaced with a petal protection small cover 28 .

[0170] Example 4

[0171] A method for dismantling a distributed permanent magnet shaft-mounted generator, quickly dismantling an intermediate module on site and quickly installing the remaining modules together to ensure normal operation, includes the following steps:

[0172] Step 1: When the second module unit 30 fails and needs to be quickly detached, the rear petal protection large cover 27 and the petal protection small cover 28 are removed.

[0173] Step 2: Loosen the fourth mounting bolt 12 on the second module unit 30 and the third module unit 31, and allow the rotor core 11 to be adsorbed to the inner diameter of the stator. The fourth mounting bolt 12 still remains connected to the fourth threaded hole on the rotor fixing key 16 through the fourth mounting threaded through hole on the split rotor bracket 13, but is not tightened.

[0174] Step 3, remove the connecting bolts between the first module unit 29 and the second module unit 30, tighten the disassembly bolts 42 connected to the threaded holes of the casing mounting legs 5 of the third module unit 31, and pull the second module unit 30 and the third module unit 31 out axially. When a width greater than the connection stop is generated between the first module unit 29 and the second module unit 30, remove the connecting bolts between the second module unit 30 and the third module unit 31, and continue to tighten the disassembly bolts 42 connected to the threaded holes of the casing mounting legs 5 of the third module unit 31. When a width greater than the connection stop is generated between the second module unit 30 and the third module unit 31, the second module unit 30 can be lifted out.

[0175] Step 4, remove the disassembly bolt 42 connected to the threaded hole of the casing mounting leg 5 of the third module unit 31, add a solid pad between the casing mounting leg 5 of the third module unit 31 and the force plate 40, screw the disassembly bolt 42 into the threaded hole, and push the third module unit 31 to the position of the original second module unit 30 until the third module unit 31 and the mounting stop of the first module unit 29 are installed in place and paused.

[0176] Step 5: Tighten the connecting bolts between the third module unit 31 and the first module unit 29.

[0177] Step 6: Tighten the fourth mounting bolt 12 on the rotor of the third module unit 31 to allow the rotor core 11 to separate from the inner diameter of the stator to form an air gap;

[0178] Step 7: Reinstall the removed rear petal protection large cover 27 and petal protection small cover 28 in place.

[0179] A method for quickly disassembling the middle module of a distributed permanent magnet shaft-belt generator on site and quickly installing the remaining modules together to ensure normal operation. The middle module can be quickly removed, and after the remaining modules are assembled, the capacity can be reduced and continued to be used.

[0180] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A distributed permanent magnet shaft-mounted generator, comprising a module unit, wherein the module unit comprises a stator, a rotor and a tension sleeve, wherein the rotor is arranged in the stator, and the tension sleeve is arranged in the rotor, wherein the stator, the rotor and the tension sleeve are of a petal structure and are coaxially arranged, and wherein: A stator, comprising two split stators facing each other, a split stator split housing and a split stator core with windings fixed in the split housing, the upper and lower ends of the two split housings being connected by a first mounting bolt (8), the tail of the first mounting bolt (8) being screwed with a first mounting nut (7); a housing foot is provided at the lower side of the split stator, the housing foot comprises a foot support (4) and a housing mounting leg (5), the foot support (4) being located at the bottom of the housing mounting leg (5), the foot support (4) and the housing mounting leg (5) being connected by a second mounting bolt (3), the tail of the second mounting bolt (3) being screwed with a second mounting nut (6); A rotor, comprising two split rotors (15) arranged facing each other, the split rotor (15) comprising a plurality of rotor cores (11) and a split rotor bracket (13), the plurality of rotor cores (11) being sequentially connected and arranged outside the split rotor bracket (13), a plurality of magnets (14) being embedded side by side inside the rotor core (11) close to the split stator; the split rotor bracket (13) being a semi-annular structure with a hollow middle, the two split rotor brackets (13) being connected by a third mounting bolt (17), the tail of the third mounting bolt (17) being threaded with a third mounting nut (18); the split rotor bracket (13) being connected to the plurality of rotor cores (11) by a fourth mounting bolt (12) respectively; The tension sleeve comprises two split tension sleeves (19) arranged facing each other, wherein the split tension sleeves (19) have fastening bolts for fastening the rotor and the main shaft sandwiched between the two split tension sleeves (19); At least two of the module units are connected to the main shaft and arranged side by side, and two adjacent module units are connected by connecting bolts; the module units located at both ends are respectively provided with protective covers on the outer sides, and the protective covers are petal structures, and the protective covers include two relatively arranged petal protective large covers and two relatively arranged petal protective small covers (28), the two petal protective large covers are installed on the petal housing through a first stop, and the two petal protective small covers (28) are connected to the petal protective large cover through a second stop, and the main shaft is clamped in the two petal protective small covers (28).

2. The distributed permanent magnet shaft-mounted generator according to claim 1 is characterized in that: A keyway is provided in the rotor core (11) near the split rotor bracket (13), a rotor fixing key (16) is embedded in the keyway, and the rotor fixing key (16) is threadedly connected to the fourth mounting bolt (12).

3. The distributed permanent magnet shaft-mounted generator according to claim 1 is characterized in that: Axial positioning pins (20) are installed on both sides of the butt joints at the upper and lower ends of the two split housings along the main axis direction.

4. The distributed permanent magnet shaft-mounted generator according to claim 1 is characterized in that: The end of the housing mounting leg (5) away from the main shaft is bent vertically downward along the outer edge of the anchor bracket (4) to form a first end face, a first hard alloy slider (34) is provided between the first end face and the outer edge of the anchor bracket (4), a first oil storage groove (36) is provided on the surface of the first hard alloy slider (34) on one side close to the anchor bracket (4), a first oil injection hole (35) is provided in the first hard alloy slider (34), and the first oil injection hole (35) passes through the first hard alloy slider (34) and is connected to the first oil storage tank (36); a second carbide slider (37) is provided between the bottom of the housing mounting leg (5) and the top of the anchor bracket (4); a second carbide slider (37) is provided with a second oil storage tank (39) on a side surface of the second carbide slider (37) close to the anchor bracket (4); a second oil filling hole (38) is provided in the first carbide slider (34); the second oil filling hole (38) passes through the first carbide slider (34) and is connected to the second oil storage tank (39).

5. The distributed permanent magnet shaft-mounted generator according to claim 4 is characterized in that: A first oil injection channel communicating with the first oil injection hole (35) is provided in the first end surface; and a second oil injection channel communicating with the second oil injection hole (38) is provided in the bottom of the housing mounting leg (5).

6. The distributed permanent magnet shaft-mounted generator according to claim 4 is characterized in that: The first end surface has a bolt through hole, in which an adjusting bolt (10) with a locking nut (9) is installed, and the bottom end of the adjusting bolt (10) abuts against the anchor bracket (4).

7. The distributed permanent magnet shaft-mounted generator according to claim 1 is characterized in that: The housing mounting leg (5) is provided with force-bearing plates (40) on both sides along the main axis direction, and the force-bearing plates (40) are connected to the housing mounting leg (5) via mounting and dismounting bolts (42) with dismounting bolt locking nuts (41).

8. A method for debugging a distributed permanent magnet shaft-mounted generator according to any one of claims 1 to 7, characterized in that: Before leaving the factory, the generator is installed and debugged to ensure that the generator meets the factory requirements, including the following steps: Sa1, multiple rotor cores (11) not embedded with magnetic steel (14) are connected in series and fixed to the outside of the split rotor bracket (13) by third mounting bolts (12) to form a non-magnetic split rotor; Sa2, repeat step Sa1, two non-magnetic steel split rotors are grouped together, and multiple groups of non-magnetic steel split rotors are assembled; Sa3, connecting the two petal positioning covers (22) into a full circle and threading and fixing them on the factory tooling shaft (23), and then connecting and fixing the two front petal protection covers (21) in an upper and lower distribution manner into a full circle and connecting and fixing them with the two petal positioning covers (22) through the second stop; Sa4, symmetrically placing the left-petal stator (1) and the right-petal stator (2) on both sides of the factory tooling shaft (23) and bringing them close to the factory tooling shaft (23), respectively, the left-petal stator (1) and the right-petal stator (2) are connected to the two front petal protective covers (21) through the first stop, the left-petal stator (1) and the right-petal stator (2) are connected together with the first mounting bolt (8) and fastened with the first mounting nut (7) to form a complete stator; the anchor bracket (4) and the housing mounting leg (5) are connected together with the second mounting bolt (3) and fastened with the second mounting nut (6); Sa5, symmetrically place two non-magnetic steel split rotors on both sides of the factory tooling shaft (23), connect the two split rotor brackets (13) with the third mounting bolt (17) and tighten them through the third mounting nut (18) to form a non-magnetic steel rotor, and then push the two split tension sleeves (19) between the non-magnetic steel rotor and the factory tooling shaft (23), so that the inner walls of the two split tension sleeves (19) fit the outer wall of the factory tooling shaft (23), and the outer walls of the two split tension sleeves (19) fit the inner wall of the non-magnetic steel rotor; Sa6, push the non-magnetic steel rotor and the two split tension sleeves (19) into the stator, align the split stator core with windings and the rotor core (11), and adjust the fastening bolts on the two split tension sleeves (19) to produce an interference fit between the outer diameter of the split tension sleeves (19) and the inner diameter of the non-magnetic steel rotor; Sa7. Adjust the adjusting bolt (10) to fine-tune the stator in radial direction and detect the uniformity of the air gap between the stator and the rotor. When the air gap uniformity is not greater than 2%, tighten the adjusting bolt (10) with the locking nut (9) to fix the position of the stator; Sa8, embedding the magnetic steel (14) into the rotor core (11) to make the rotor magnetic; Sa9, remove the two petal positioning covers (22) to form a module unit, make the generator run normally, conduct a pre-delivery test on the generator, check the wiring of the generator and the embedding direction of the magnetic steel (14), and ensure that the generator meets the factory requirements; Sa10, repeat steps Sa4 to Sa9 to install and debug multiple module units; Sa11. After all the module units are installed and debugged, loosen the fourth mounting bolt (12) of the last module, allow the rotor core (11) to be adsorbed to the inner diameter of the stator, and keep the fourth mounting bolt (12) connected to the fourth threaded hole on the rotor fixing key (16) through the fourth mounting threaded through hole on the split rotor bracket (13), but do not tighten it; Sa12, remove the third mounting bolt (17) and the third mounting nut (18) connecting the two split rotor brackets (13), and the two split rotors are separately adsorbed onto the left-petal stator (1) and the right-petal stator (2); Sa13, loosen the locking nut (9), and loosen the position restriction of the stator by the adjusting bolt (10); remove the first mounting bolt (8), the first mounting nut (7), the second mounting bolt (3) and the second mounting nut (6) in petals to form a left petal stator and rotor (24) and a right petal stator and rotor (25); Sa14, repeat steps Sa11 to Sa13, and remove the remaining module units one by one; Sa15, remove the two front petal protection covers (21).

9. A method for installing a distributed permanent magnet shaft-mounted generator according to any one of claims 1 to 7, characterized in that: The steps include: Sb1, installing and fixing the two petal positioning covers (22) on the ship's main shaft (26), connecting and fixing the two front petal protective large covers (21) in an up-and-down manner to form a full circle, and installing them together with the two petal positioning covers (22) to form a positioning stop concentric with the ship's main shaft (26); Sb2, symmetrically placing the left-lobe stator (1) and the right-lobe stator (2) on both sides of the ship's main shaft (26) and close to the ship's main shaft (26), so that the stoppers of the left-lobe stator (24) and the right-lobe stator (25) are matched with the stoppers of the front petal protective cover (21) for installation, and the left-lobe stator (24) and the right-lobe stator (25) are fixed together with the first bolt (8) and the first mounting nut (7); the second mounting bolt (3) is connected and tightened with the second mounting nut (6) through the second bolt hole on the anchor bracket (4) and the casing mounting leg (5); Sb3, use the third mounting bolt (17) to pass through the third bolt hole on the two split rotor brackets (13) and connect and fix with the third mounting nut (18), so as to put the two split rotor brackets (13) into a circle; push the two split expansion sleeves (19) between the split rotor (15) and the ship's main shaft (26), so that the inner walls of the two split expansion sleeves (19) fit the outer wall of the ship's main shaft (26), so that the outer walls of the two split expansion sleeves (19) fit the inner wall of the rotor, and then adjust the fastening bolts of the two split expansion sleeves (19) so that the outer diameter of the split expansion sleeve (19) and the inner diameter of the rotor have an interference fit; the two split expansion sleeves (19) are respectively located in the two split rotors (15); Sb4, tighten the fourth mounting bolt (12) to allow the rotor core (11) to separate from the inner diameter of the stator to form an air gap; Sb5. Repeat steps Sb2 to Sb4 to install multiple module units, with adjacent surfaces of each module unit being bonded to each other; Sb6, install the two-petal rear petal protection large cover (27) and the two-petal petal protection small cover (28).

10. A method for dismantling a distributed permanent magnet shaft-mounted generator according to any one of claims 1 to 7, characterized in that: The module unit located in the middle is quickly dismantled, and the remaining module units are reassembled to ensure the normal operation of the generator, wherein the module unit comprises a second module unit (30) located in the middle, and a first module unit (29) and a second module unit (30) respectively located in front of and behind the second module unit (30), and comprises the following steps: Sc1. When the second module unit (30) fails and needs to be quickly detached, the rear petal protection large cover (27) and the petal protection small cover (28) are removed; Sc2, loosen the fourth mounting bolts (12) on the second module unit (30) and the third module unit (31), so that the rotor core (11) is adsorbed to the inner diameter of the stator, and the fourth mounting bolts (12) remain connected to the fourth threaded hole on the rotor fixing key (16) through the fourth mounting threaded through hole on the split rotor bracket (13), but are not tightened; Sc3, remove the connecting bolts between the first module unit (29) and the second module unit (30), tighten the disassembly bolts (42) connected to the threaded holes of the casing mounting legs (5) of the third module unit (31), and pull out the second module unit (30) and the third module unit (31) axially. When a width greater than the connection stop is generated between the first module unit (29) and the second module unit (30), remove the connecting bolts between the second module unit (30) and the third module unit (31), and continue to tighten the disassembly bolts (42) connected to the threaded holes of the casing mounting legs (5) of the third module unit (31). When a width greater than the connection stop is generated between the second module unit (30) and the third module unit (31), lift out the second module unit (30); Sc4, remove the disassembly bolt (42) connected to the threaded hole of the casing mounting leg (5) of the third module unit (31), add a solid pad between the casing mounting leg (5) of the third module unit (31) and the force plate (40), screw the disassembly bolt (42) into the threaded hole, and push the third module unit (31) to the position of the original second module unit (30) until the third module unit (31) and the mounting stop of the first module unit (29) are installed in place and pause; Sc5, tighten the connecting bolts between the third module unit (31) and the first module unit (29); Sc6, tighten the fourth mounting bolt (12) on the rotor of the third module unit (31) to allow the rotor core (11) to separate from the inner diameter of the stator to form an air gap; Sc7. Reinstall the removed rear protective large cover (27) and the petal protective small cover (28) in place.

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