A dual-frequency capacitor-excited unidirectional synchronous generator

Abstract

The utility model relates to a dual-frequency capacitor-excited unidirectional synchronous generator with a dual-speed function, which can stably build pressure at different speeds, save energy and reduce emissions. The utility model includes a generator housing, a rotor and a stator arranged in the generator housing, and a driving part for driving the rotor to rotate. The top of the generator housing is provided with an oil chamber and a first slide groove, the bottom of the first slide groove is provided with a through groove connected to the inner cavity of the generator housing, the side wall of the oil chamber is provided with a channel connected to the side wall of the first slide groove, a slider is slidably connected in the first slide groove, the top surface of the slider is provided with a through hole in the vertical direction, the through hole is connected to the through groove, and a control mechanism for controlling the sliding of the slider is also provided in the generator housing. In the initial state, the side wall of the slider blocks the channel and the channel opening of the first slide groove, which has the effect of self-lubrication.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a dual-frequency capacitor-excited unidirectional synchronous generator. Background Art

[0002] When natural disasters or emergencies occur, emergency lighting equipment is needed for lighting, and generators are needed to power emergency lighting equipment. In order to meet the multiple power and voltage requirements of emergency lighting equipment, emergency lighting equipment is generally equipped with dual-frequency capacitor-excited unidirectional synchronous generators.

[0003] Dual-frequency generators switch back and forth between two operating frequencies, so the rotor wear of dual-frequency generators will be greater than that of traditional generators, so special attention should be paid to the lubrication and maintenance of dual-frequency generators. However, during the disaster relief process, personnel need to be involved in the disaster relief process, and the regular lubrication and maintenance of the generator cannot be guaranteed. Therefore, how to achieve self-lubrication of the generator has become a problem. Utility Model Content

[0004] The present application provides a dual-frequency capacitor-excited unidirectional synchronous generator having a self-lubricating function.

[0005] The present application provides a dual-frequency capacitor-excited unidirectional synchronous generator adopts the following technical solution:

[0006] A dual-frequency capacitor-excited unidirectional synchronous generator comprises a generator housing, a rotor and a stator arranged in the generator housing, and a driving part for driving the rotor to rotate, an oil chamber and a first slide groove are provided on the top of the generator housing, a through groove connected to the inner cavity of the generator housing is provided at the bottom of the first slide groove, the diameter of the through groove is smaller than the diameter of the first slide groove, a channel connected to the side wall of the first slide groove is provided on the side wall of the oil chamber, a slider is slidably connected in the first slide groove, a through hole is provided on the top surface of the slider in the vertical direction, the through hole is connected to the through groove, and a control mechanism for controlling the sliding of the slider is also provided in the generator housing, in an initial state, the side wall of the slider blocks the channel and the channel opening of the first slide groove, and when the slider moves to conflict with the bottom wall of the first slide groove, the slider no longer blocks the channel and the channel opening of the first slide groove.

[0007] By adopting the above technical solution, when the generator is working, the control mechanism controls the slider to move downward so that the slider no longer blocks the channel. When the slider no longer blocks the channel, the lubricating oil in the oil chamber will flow into the first slide groove through the channel, and flow into the through groove through the through hole, and then pass through the through groove to the rotor. When the rotor rotates, it will drive the lubricating oil to splash, so that the lubricating oil can splash to the connection of the generator parts, thereby realizing lubrication and maintenance of the generator.

[0008] Preferably, the slider is an iron block, and the control mechanism includes a magnetic strip disposed on the rotor and having an adsorption effect on the slider, and a spring disposed in the first slide groove, the slider is located directly above the rotation path of the magnetic strip, one end of the spring is fixedly connected to the top wall of the first slide groove, and the other end is in contact with the top wall of the slider, and the effect of the magnetic strip on the slider is greater than the effect of the spring on the slider.

[0009] By adopting the above technical solution, after the generator is started, the rotor will rotate during the rotation process, and the magnetic strip will be driven to rotate. When the magnetic strip moves close to the slider, the magnetic strip will produce a greater and greater adsorption force on the slider, which will cause the slider to move downward so that the slider gradually stops blocking the channel. When the slider is no longer blocking the channel, the lubricating oil in the oil chamber will flow into the first slide groove through the channel, and flow into the through groove through the through hole, and then pass through the through groove to the rotor. When the rotor rotates, it will cause the lubricating oil to splash, so that the lubricating oil can splash to the connection of the generator parts, thereby achieving lubrication and maintenance of the generator. At the same time, when the slider moves, it will cause the spring to be stretched. When the magnetic strip moves away from the slider, the adsorption force of the magnetic strip on the slider becomes smaller and smaller, and the spring will rebound and drive the slider to move upward to reset, so that the slider blocks the channel again.

[0010] Preferably, a threaded hole connected to the first slide groove is opened in the vertical direction on the top surface of the generator housing, and a bolt is connected to the threaded hole. The diameter of the bolt is larger than the diameter of the through hole. The spring sleeve is arranged on the outside of the thread. When the bolt presses the slider against the bottom wall of the first slide groove, the bolt completely blocks the through hole.

[0011] By adopting the above technical solution, when the generator is not in use, the position of the magnetic strip is uncertain. If the magnetic strip stops at a position close to the slider, the slider will be located at the bottom of the first slide slot, making it impossible for the slider to block the channel, and the lubricant will continue to flow into the generator housing. Therefore, after the generator stops working, the bolt is rotated to move downward and press the slider against the bottom wall of the first slide slot and block the through slot, so that the lubricating oil will not leak into the inner cavity of the generator housing, preventing the waste of lubricating oil. Before starting the generator, the bolt is rotated so that the bolt no longer presses the slider. Under the action of the spring, the slider will move upward to reset and block the channel and the channel opening of the first slide slot.

[0012] Preferably, a receiving groove is provided on the surface of the rotor along the axial direction of the rotating shaft, and the receiving groove is used to receive the magnetic strip. A limiting portion for radially fixing the magnetic strip is also provided in the receiving groove.

[0013] By adopting the above technical solution, the installation of the magnetic strip is facilitated while preventing the magnetic strip from being thrown out of the receiving slot when the rotor rotates.

[0014] Preferably, the limiting portion is a limiting strip provided on the side wall of the accommodating groove and a limiting slot provided on the side wall of the magnetic strip and engaged with the limiting strip.

[0015] By adopting the above technical solution, the cooperation between the limiting strip and the limiting groove can help the magnetic strip overcome the centrifugal force generated when it rotates, thereby preventing the magnetic strip from flying out of the receiving groove when the rotor rotates.

[0016] Preferably, a plurality of mounting holes are opened on one end surface of the rotor, the plurality of mounting holes are circumferentially distributed on the rotor, damping strips are arranged in the plurality of mounting holes, fixing plates are arranged on both end surfaces of the rotor, and the two ends of the plurality of damping strips are respectively abutted against the two fixing plates.

[0017] By adopting the above technical solution, the damping of the generator is increased by arranging the damping strip, which can effectively suppress the vibration and improve the stability. In addition, two fixing plates are arranged to prevent the damping strip from coming out of the mounting hole during the rotation of the rotor.

[0018] Preferably, both end faces of the magnetic strip are flush with both end faces of the rotor, and both end portions of the magnetic strip are respectively in contact with two fixing plates.

[0019] By adopting the above technical solution, the two mounting plates limit the magnetic strip, thereby further improving the connection reliability between the magnetic strip and the rotor.

[0020] Preferably, a refueling groove connected to the oil chamber is provided on the top surface of the generator housing, and a sealing cover for sealing the notch of the refueling groove is also hingedly connected to the top surface of the generator housing. The sealing cover is snap-fitted with the refueling groove, and a pull block is fixedly connected to the top of the sealing cover.

[0021] By adopting the above technical solution, when it is not necessary to add lubricating oil, the plugging cover is clamped in the notch of the oil filling tank to prevent impurities from falling into the oil cavity. When it is necessary to add oil, the operator first pulls the pull block to drive the plugging cover to move, so that the plugging cover blocks the oil filling tank.

[0022] Preferably, a slot that engages with the pull block is provided on the top surface of the generator housing, and the slot is located on the rotation path of the pull block. A limit block is also provided on the top surface of the generator housing, and the limit block is located on the side of the slot away from the refueling tank. The limit block is located on the rotation path of the blocking cover, and when the blocking cover moves to abut against the limit block, the pull block is located in the slot.

[0023] By adopting the above technical solution, after the pulling block is pulled so that the blocking cover no longer blocks the oil filling tank, the pulling block is inserted into the slot by pressing the blocking cover, and the blocking cover rests on the limiting block. The cooperation between the pulling block and the slot can limit the blocking cover, preventing the blocking cover from flipping over and re-blocking the oil filling tank when filling the lubricating oil. The setting of the limiting block ensures that when the pulling block cooperates with the slot, there is a certain distance between the blocking cover and the generator housing for fingers to insert. After the lubricating oil is filled, the operator inserts his finger between the blocking cover and the generator housing and then moves the blocking cover to make the pulling block move away from the slot, and the blocking cover is re-engaged in the oil filling tank.

[0024] The technical effects of this utility model are mainly reflected in the following aspects:

[0025] 1. The utility model controls the movement of the slider through the cooperation of the magnetic strip and the spring, thereby realizing the self-lubrication and maintenance of the generator;

[0026] 2. The utility model provides bolts to prevent lubricating oil from leaking into the inner cavity of the generator housing when the generator is not working;

[0027] 3. The utility model limits the positions of a plurality of damping strips and magnetic strips by setting a fixing plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the generator of the present application when the rack rotates to the highest point in the starting state.

[0029] Figure 2 yes Figure 1 Cross-sectional view of the generator along line AA.

[0030] Figure 3 yes Figure 2 A partial enlarged view of point B in the middle.

[0031] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle rotor and a fixed plate.

[0032] Figure 5 yes Figure 1 Schematic diagram of the structure of the magnetic stripe.

[0033] Figure numerals: 1. motor housing; 11. oil chamber; 12. first slide groove; 13. through groove; 14. channel; 15. threaded hole; 16. oil filling groove; 17. slot; 18. limit block; 2. rotor; 21. accommodating groove; 22. mounting hole; 23. damping strip; 3. stator; 4. slider; 41. through hole; 5. control mechanism; 51. magnetic strip; 52. spring; 6. bolt; 7. limit part; 71. limit strip; 72. limit groove; 8. fixing plate; 9. blocking cover; 91. pull block. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.

[0035] Reference Figure 1-Figure 3 A dual-frequency capacitor-excited unidirectional synchronous generator of this embodiment includes a generator housing 1 and a driving part. A plurality of stators 3 are fixedly connected to the inner wall of the generator housing 1, and a rotor 2 is also rotatably connected to the generator housing 1. The driving part is a diesel engine (not shown in the diesel engine figure) fixedly connected to the rotating shaft of the rotor 2 and used to drive the rotor 2 to rotate. A plurality of mounting holes 22 penetrating the rotor 2 are opened on one end face of the rotor 2 along the axial direction of the rotor 2. The plurality of mounting holes 22 are circumferentially distributed on the rotor 2. Damping strips 23 are inserted into the plurality of mounting holes 22. The two end faces of the rotor 2 are respectively fixedly connected to fixing plates 8 by bolts 6, and the two ends of the plurality of damping strips 23 are respectively against the two fixing plates 8.

[0036] Reference Figure 1-Figure 3 An oil chamber 11 is also provided on the top of the generator housing 1, and a refueling groove 16 connected to the oil chamber 11 is provided on the top surface of the generator housing 1. A blocking cover 9 for blocking the notch of the refueling groove 16 is hingedly connected to the top of the generator housing 1. The blocking cover 9 is engaged with the refueling groove 16, and a pull block 91 is fixedly connected to the top of the blocking cover 9. A slot 17 engaged with the pull block 91 is also provided on the top surface of the motor housing 1. The slot 17 is located on the rotation path of the pull block 91. A limit block 18 is also provided on the top surface of the generator housing 1. The limit block 18 is located on the side of the slot 17 away from the refueling groove 16. The limit block 18 is located on the rotation path of the blocking cover 9. When the blocking cover 9 moves to abut against the limit block 18, the pull block 91 is located in the slot 17.

[0037] Reference Figure 1-Figure 3 When it is not necessary to add lubricating oil, the blocking cover 9 is always connected to the notch of the oil filling groove 16 to prevent impurities from falling into the oil chamber 11. When refueling is needed, the operator first pulls the pull block 91 to drive the blocking cover 9 to move, so that the blocking cover 9 blocks the oil filling groove 16. After the blocking cover 9 is turned over, the blocking cover 9 is pressed to make the pull block 91 snap into the slot 17, and the blocking cover 9 rests on the limit block 18. After the lubricating oil is filled, the operator inserts his finger between the blocking cover 9 and the generator housing 1 and then moves the blocking cover 9 to make the pull block 91 move away from the slot 17, and the blocking cover 9 is re-connected to the oil filling groove 16.

[0038] Reference Figure 1-Figure 3A first slide groove 12 is also provided on the top of the generator housing 1 in the vertical direction. A channel 14 connected to the first slide groove 12 is provided on the bottom wall of the oil chamber 11. The channel 14 and the channel 14 opening of the first slide groove 12 are located on the side wall of the first slide groove 12. A through groove 13 connected to the inner cavity of the generator housing 1 is provided on the bottom surface of the first slide groove 12 in the vertical direction. The diameter of the through groove 13 is smaller than the diameter of the first slide groove 12. A slider 4 made of iron is also slidably connected in the first slide groove 12 in the vertical direction. A through hole 41 is provided on the top surface of the slider 4 in the vertical direction. The through hole 41 is connected to the through groove 13.

[0039] Reference Figure 1-Figure 5 , a receiving groove 21 is provided on the outer wall of the rotor 2 along the axial direction of the rotor 2. A control mechanism 5 for controlling the sliding movement of the slider 4 is also provided in the generator housing 1. When the slider 4 moves to abut against the bottom wall of the first slide groove 12, the slider 4 does not block the communication port between the channel 14 and the first slide groove 12. The control mechanism 5 includes a magnetic strip 51 installed in the receiving groove 21 and having an adsorption effect on the slider 4. The slider 4 is located directly above the rotation path of the magnetic strip 51. The end faces of the two ends of the magnetic strip 51 are flush with the end faces of the two ends of the rotor 2, and the two ends of the magnetic strip 51 are respectively abutted against two fixed plates 8. A limiting portion 7 for radially fixing the magnetic strip 51 is also provided in the receiving groove 21. The limiting portion 7 is a limiting strip 71 fixed on the side wall of the receiving groove 21 and a limiting groove 72 provided on the side wall of the magnetic strip 51 and engaged with the limiting strip 71.

[0040] Reference Figure 1-Figure 3 The control mechanism 5 also includes a spring 52 installed in the first slide slot 12, one end of the spring 52 is fixedly connected to the top wall of the first slide slot 12, and the other end is in conflict with the top wall of the slider 4. The effect of the magnetic strip 51 on the slider 4 is greater than the effect of the spring 52 on the slider 4. A threaded hole 15 connected to the first slide slot 12 is provided on the top surface of the generator housing 1 in the vertical direction. A bolt 6 is connected in the threaded hole 15. The diameter of the bolt 6 is greater than the diameter of the through hole 41. The axis of the bolt 6 coincides with the axis of the through hole 41. The spring 52 is sleeved on the outside of the thread. When the bolt 6 presses the slider 4 against the bottom wall of the first slide slot 12, the bolt 6 completely blocks the through hole 41.

[0041] Reference Figure 1-Figure 3 When the generator is not in use, the position of the magnetic strip 51 is uncertain. If the magnetic strip 51 stops at a position close to the slider 4, the slider 4 will be located at the bottom of the first slide groove 12, so that the slider 4 cannot block the channel 14, and the lubricant will continue to flow into the generator housing 1. Therefore, after the generator stops working, the bolt 6 is rotated to move downward and press the slider 4 against the bottom wall of the first slide groove 12 and cover the through groove, so that the lubricant will not leak into the inner cavity of the generator housing 1, thereby preventing the waste of the lubricant.

[0042] Reference Figure 1-Figure 5 When the generator is to be used, firstly, the bolt 6 is rotated so that the bolt 6 no longer presses the slider 4. Under the action of the spring 52, the slider 4 will move upward to reset and block the passage 14 and the passage 14 opening of the first slide groove 12. After the generator is started, the rotor 2 will drive the magnetic strip 51 to rotate during rotation. When the magnetic strip 51 moves close to the slider 4, the adsorption force generated by the magnetic strip 51 on the slider 4 becomes larger and larger, which will cause the slider 4 to move downward so that the slider 4 gradually stops blocking the passage 14. When the slider 4 does not block the passage 14, the lubricating oil in the oil chamber 11 will flow into the first slide groove 12 through the passage 14, and flow into the through groove 13 through the through hole 41, and then pass through the through groove 13 to the rotor 2. When the rotor 2 rotates, it will drive the lubricating oil to splash, so that the lubricating oil can splash to the connection of the generator parts, thereby achieving lubrication and maintenance of the generator. At the same time, when the slider 4 moves, it will drive the spring 52 to be stretched under force.

[0043] When the magnetic strip 51 moves away from the slider 4, the adsorption force of the magnetic strip 51 on the slider 4 becomes smaller and smaller, and the spring 52 will rebound and drive the slider 4 to move upward and reset, so that the slider 4 re-blocks the channel 14. The faster the rotor 2 of the generator moves, the more obvious the effect of the magnetic strip 51 on the slider 4 is, so that the amount of lubricating oil flowing into the inner cavity of the motor housing is greater. Therefore, the cooperation of the magnetic strip 51 and the spring 52 can also adjust the amount of lubricating oil added to a certain extent according to the rotation speed of the generator.

[0044] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A dual-frequency capacitor-excited unidirectional synchronous generator, comprising a generator housing (1), a rotor (2) and a stator (3) arranged in the generator housing (1), and a driving unit for driving the rotor (2) to rotate, characterized in that: The generator housing (1) is provided with an oil chamber (11) and a first slide groove (12) at the top, a through groove (13) communicating with the inner cavity of the generator housing (1) is provided at the bottom of the first slide groove (12), the diameter of the through groove (13) is smaller than the diameter of the first slide groove (12), a channel (14) communicating with the side wall of the first slide groove (12) is provided on the side wall of the oil chamber (11), a slider (4) is slidably connected in the first slide groove (12), and the top surface of the slider (4) is vertically A through hole (41) is opened in the generator housing (1), and the through hole (41) is connected to the through groove (13). A control mechanism (5) for controlling the sliding movement of the slider (4) is also provided in the generator housing (1). In the initial state, the side wall of the slider (4) blocks the channel (14) and the channel (14) opening of the first slide groove (12). When the slider (4) moves to conflict with the bottom wall of the first slide groove (12), the slider (4) no longer blocks the channel (14) and the channel (14) opening of the first slide groove (12).

2. A dual-frequency capacitor-excited unidirectional synchronous generator according to claim 1, characterized in that: The slider (4) is an iron block. The control mechanism (5) comprises a magnetic strip (51) provided on the rotor (2) and having an adsorption effect on the slider (4) and a spring (52) provided in the first slide groove (12). The slider (4) is located directly above the rotation path of the magnetic strip (51). One end of the spring (52) is fixedly connected to the top wall of the first slide groove (12), and the other end is in contact with the top wall of the slider (4). The effect of the magnetic strip (51) on the slider (4) is greater than the effect of the spring (52) on the slider (4).

3. A dual-frequency capacitor-excited unidirectional synchronous generator according to claim 2, characterized in that: A threaded hole (15) connected to the first slide groove (12) is provided on the top surface of the generator housing (1) in the vertical direction, and a bolt (6) is connected inside the threaded hole (15). The diameter of the bolt (6) is larger than the diameter of the through hole (41). The spring (52) is sleeved on the outside of the thread. When the bolt (6) presses the slider (4) against the bottom wall of the first slide groove (12), the bolt (6) completely blocks the through hole (41).

4. A dual-frequency capacitor-excited unidirectional synchronous generator according to claim 2, characterized in that: A receiving groove (21) is provided on the surface of the rotor (2) along the axial direction of the rotating shaft, the receiving groove (21) being used to receive the magnetic strip (51), and a limiting portion (7) for radially fixing the magnetic strip (51) is also provided in the receiving groove (21).

5. A dual-frequency capacitor-excited unidirectional synchronous generator according to claim 4, characterized in that: The limiting portion (7) comprises a limiting strip (71) provided on the side wall of the containing groove (21) and a limiting groove (72) provided on the side wall of the magnetic strip (51) and engaging with the limiting strip (71).

6. A dual-frequency capacitor-excited unidirectional synchronous generator according to claim 2, characterized in that: A plurality of mounting holes (22) are provided on one end surface of the rotor (2), the plurality of mounting holes (22) are circumferentially distributed on the rotor (2), damping strips (23) are provided in the plurality of mounting holes (22), fixing plates (8) are provided on both end surfaces of the rotor (2), and the two ends of the plurality of damping strips (23) are respectively abutted against two fixing plates (8).

7. A dual-frequency capacitor-excited unidirectional synchronous generator according to claim 6, characterized in that: The end surfaces of both ends of the magnetic strip (51) are flush with the end surfaces of both ends of the rotor (2), and the end portions of both ends of the magnetic strip (51) are respectively in contact with two fixing plates (8).

8. The dual-frequency capacitor-excited unidirectional synchronous generator according to claim 1, characterized in that: The top surface of the generator housing (1) is provided with a refueling groove (16) connected to the oil chamber (11); the top surface of the generator housing (1) is also hingedly connected with a blocking cover (9) for blocking the notch of the refueling groove (16); the blocking cover (9) is snap-fitted with the refueling groove (16); and a pull block (91) is fixedly connected to the top of the blocking cover (9).

9. A dual-frequency capacitor-excited unidirectional synchronous generator according to claim 8, characterized in that: The top surface of the generator housing (1) is also provided with a slot (17) for engaging with the pull block (91); the slot (17) is located on the rotation path of the pull block (91); a limit block (18) is also provided on the top surface of the generator housing (1); the limit block (18) is located on a side of the slot (17) away from the oil filling tank (16); the limit block (18) is located on the rotation path of the blocking cover (9); when the blocking cover (9) moves to abut against the limit block (18), the pull block (91) is located in the slot (17).

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