High-speed permanent magnet synchronous generator set capable of reducing frictional loss

Abstract

The utility model discloses a high-speed permanent magnet synchronous generator set capable of reducing frictional loss, which relates to the field of high-speed permanent magnet synchronous generator sets and comprises an outer shell and an output shaft, and radiating fins are fixedly arranged on the outer surface of the outer shell in an arc shape at equal intervals. According to the high-speed permanent magnet synchronous generator set capable of reducing the friction loss, through the arrangement of the oil adding pipe, thick lubricating oil (butter lubricating oil) stored in the arc-shaped oil storage bin can be automatically injected into the driving bearing along with the reduction of the lubricating oil in the driving bearing; therefore, the condition that the lubricating oil in the driving bearing is not reduced or even disappears when the high-speed permanent magnet synchronous generator set continuously runs is ensured; the situation that lubricating oil in the driving bearing is reduced or even disappears, so that the friction loss of the high-speed permanent magnet synchronous generator set is increased, and the service life of parts in the generator set is shortened is avoided, and meanwhile the frequency of adding lubricating oil and overhauling the high-speed permanent magnet synchronous generator set by workers is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the field of high-speed permanent magnet synchronous generator sets, in particular to a high-speed permanent magnet synchronous generator set with reduced friction loss. Background Art

[0002] High-speed permanent magnet synchronous generator set is a kind of efficient and environmentally friendly power generation device, which is widely used in wind power generation, hydropower generation and other high-efficiency energy conversion fields. Compared with traditional generators, high-speed permanent magnet synchronous generator set has the advantages of high efficiency, high power density, low loss, high reliability and life, and good dynamic response.

[0003] However, the current high-speed permanent magnet synchronous generator sets still have some shortcomings. For example, the existing high-speed permanent magnet synchronous generator sets will generate large friction losses when running at high speed, which will not only interfere with the life of the internal parts of the high-speed permanent magnet synchronous generator sets, but also increase the maintenance frequency of the staff, and thus there are certain usage defects.

[0004] Therefore, it is urgent to improve this shortcoming. The utility model studies and improves the existing structural deficiencies and provides a high-speed permanent magnet synchronous generator set with reduced friction loss. Utility Model Content

[0005] The utility model aims to provide a high-speed permanent magnet synchronous generator set with reduced friction loss, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed permanent magnet synchronous generator set with reduced friction loss, comprising an outer shell and an output shaft, the outer surface of the outer shell is arc-shaped and has heat dissipation fins fixedly installed at equal intervals, and the outer surface of the outer shell is annular and has auxiliary mounting strips fixedly connected at equal intervals, and a bearing assembly is fixedly installed at the bottom of the outer shell, the output shaft is installed inside the outer shell, and a connecting assembly is fittedly installed at the end of the outer shell, and an automatic oil filling assembly is fixedly connected to the inner surface of the connecting assembly.

[0007] Furthermore, the bearing assembly includes an auxiliary mounting plate, a bearing seat and an auxiliary support frame, and the bearing seat is fixedly mounted on the top of the auxiliary mounting plate, and the auxiliary support frames are symmetrically mounted on the front and rear sides of the bearing seat, and the top of the bearing seat is fixedly connected to the bottom of the outer shell.

[0008] Furthermore, the inner side of the auxiliary support frame is fixedly connected to the outer surface of the bearing seat, and the bottom of the bearing seat is fixedly connected to the top of the auxiliary mounting plate, and the auxiliary support frame forms a fixed structure through the bearing seat and the auxiliary mounting plate.

[0009] Furthermore, the connecting assembly includes a protective cover, an annular mounting frame, a positioning block, a fastening bolt and a driving bearing, and the annular mounting frame is fixedly connected to the outer surface of the end of the protective cover, and the outer surface of the annular mounting frame is fixedly installed with positioning blocks in an annular shape and equidistantly, and the internal threads of the positioning block are connected to the fastening bolts, and at the same time, the driving bearing is fixedly installed inside the protective cover, the interior of the driving bearing is connected to the outer side of the output shaft, and the output shaft forms a rotating structure with the protective cover through the driving bearing.

[0010] Furthermore, the number of the positioning blocks is four, and the four positioning blocks are installed in a ring shape and equidistantly on the outer surface of the annular mounting frame, and the installation position of the positioning block corresponds one-to-one to the installation position of the auxiliary mounting strip, and the inner side of the positioning block is fit-connected to the end of the auxiliary mounting strip.

[0011] Furthermore, the automatic oil filling assembly includes an arc-shaped oil storage bin, an oil filling pipe, a sealing plug, an oil filling pipe and an insulation pad, and the top of the arc-shaped oil storage bin is embedded with an oil filling pipe, and the outer side of the oil filling pipe is fixedly connected to the interior of the protective cover, and the top of the oil filling pipe is snap-fitted with a sealing plug, and at the same time, the bottom of the arc-shaped oil storage bin is symmetrically installed with an oil filling pipe, the other end of the oil filling pipe is connected to the interior of the driving bearing, and insulation pads are symmetrically fixedly installed on the left and right sides of the arc-shaped oil storage bin.

[0012] Furthermore, the inner dimension of the end of the oil filling pipe is completely consistent with the outer dimension of the bottom of the sealing plug, and the oil filling pipe and the sealing plug form a snap-fit ​​structure.

[0013] The utility model provides a high-speed permanent magnet synchronous generator set with reduced friction loss, which has the following beneficial effects:

[0014] 1. The utility model provides an oil filling pipe so that the thick lubricating oil (butter lubricating oil) stored in the arc-shaped oil storage tank can be automatically injected into the interior of the driving bearing as the lubricating oil in the driving bearing decreases, thereby ensuring that the lubricating oil in the driving bearing of the high-speed permanent magnet synchronous generator set will not decrease or even disappear during continuous operation, thereby avoiding the situation where the friction loss of the high-speed permanent magnet synchronous generator set is increased and the life of the internal parts of the generator set is reduced due to the reduction or even disappearance of the lubricating oil in the driving bearing, and at the same time greatly reducing the frequency of staff adding lubricating oil and overhauling the high-speed permanent magnet synchronous generator set.

[0015] 2. The utility model provides a heat-insulating pad so that the temperature inside the arc-shaped oil storage bin will not be too low when storing thick lubricating oil, thereby avoiding the situation where the lubricating oil stored in the arc-shaped oil storage bin is too thick and cannot be automatically added into the driving bearing due to the low temperature inside the arc-shaped oil storage bin. In addition, by arranging the oil filling pipe and the sealing plug into a snap-fit ​​connection, it is easy for the staff to add lubricating oil to the inside of the arc-shaped oil storage bin, thereby providing convenience for the staff to add lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a high-speed permanent magnet synchronous generator set with reduced friction loss according to the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of an arc-shaped oil storage tank-insulation pad of a high-speed permanent magnet synchronous generator set for reducing friction loss in the utility model;

[0018] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of an auxiliary mounting plate-bearing seat of a high-speed permanent magnet synchronous generator set for reducing friction loss.

[0019] In the figure: 1. outer shell; 2. heat dissipation fins; 3. auxiliary mounting strip; 4. load-bearing assembly; 41. auxiliary mounting plate; 42. load-bearing seat; 43. auxiliary support frame; 5. output shaft; 6. connecting assembly; 61. protective cover; 62. annular mounting frame; 63. positioning block; 64. fastening bolt; 65. driving bearing; 7. automatic oil filling assembly; 71. arc-shaped oil storage tank; 72. oil filling pipe; 73. sealing plug; 74. oil filling pipe; 75. insulation pad. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0021] like Figure 1 and Figure 2As shown, a high-speed permanent magnet synchronous generator set with reduced friction loss includes an outer shell 1 and an output shaft 5. The outer surface of the outer shell 1 is arc-shaped and fixedly installed with heat dissipation fins 2 at equal distances, and the outer surface of the outer shell 1 is annular and fixedly connected with auxiliary mounting strips 3 at equal distances. The output shaft 5 is installed inside the outer shell 1, and a connecting component 6 is fitted and installed at the end of the outer shell 1. The connecting component 6 includes a protective cover 61, an annular mounting frame 62, a positioning block 63, a fastening bolt 64 and a driving bearing 65, and the outer surface of the end of the protective cover 61 is fixedly connected with the annular mounting frame 62, and The outer surface of the annular mounting frame 62 is annularly and equidistantly fixed with positioning blocks 63, the number of positioning blocks 63 is four, and the four positioning blocks 63 are annularly and equidistantly installed on the outer surface of the annular mounting frame 62, and the installation positions of the positioning blocks 63 correspond to the installation positions of the auxiliary mounting strips 3 one by one, and the inner sides of the positioning blocks 63 are fitted and connected with the ends of the auxiliary mounting strips 3, and the internal threads of the positioning blocks 63 are connected with the fastening bolts 64, and the internal threads of the protective cover 61 are fixedly installed with a driving bearing 65, and the inner part of the driving bearing 65 is connected to the outer side of the output shaft 5, and the output shaft 5 is connected to the output shaft 5. The output shaft 5 forms a rotating structure with the protective cover 61 through the driving bearing 65. The friction loss between the output shaft 5 and the protective cover 61 can be initially reduced by setting the output shaft 5 and the protective cover 61 as the rotating structure. The inner surface of the connecting component 6 is fixedly connected with an automatic oil filling component 7. The automatic oil filling component 7 includes an arc-shaped oil storage bin 71, an oil filling pipe 72, a sealing plug 73, an oil filling pipe 74 and an insulation pad 75. The top of the arc-shaped oil storage bin 71 is embedded with an oil filling pipe 72, and the outer side of the oil filling pipe 72 is fixedly connected to the inside of the protective cover 61. A sealing plug 73 is installed at the top of the oil pipe 72, and the internal size of the end of the oil filling pipe 72 is completely consistent with the external size of the bottom of the sealing plug 73, and the oil filling pipe 72 and the sealing plug 73 form a snap-fit ​​structure. By setting the oil filling pipe 72 and the sealing plug 73 in a snap-fit ​​structure, the sealing plug 73 is convenient for the staff to open and add lubricating oil. At the same time, oil adding pipes 74 are symmetrically installed at the bottom of the arc-shaped oil storage bin 71, and the other end of the oil adding pipe 74 is connected to the inside of the driving bearing 65, and insulation pads 75 are symmetrically fixed on the left and right sides of the arc-shaped oil storage bin 71.

[0022] like Figure 1 and Figure 3As shown, the outer surface of the outer shell 1 is arc-shaped and equidistantly fixed with heat dissipation fins 2, and the outer surface of the outer shell 1 is annular and equidistantly fixedly connected with auxiliary mounting strips 3, and the bottom of the outer shell 1 is fixedly installed with a bearing assembly 4, the bearing assembly 4 includes an auxiliary mounting plate 41, a bearing seat 42 and an auxiliary support frame 43, and the top of the auxiliary mounting plate 41 is fixedly installed with a bearing seat 42, and the front and rear sides of the bearing seat 42 are symmetrically installed with auxiliary support frames 43, and the top of the bearing seat 42 is fitted and fixedly connected to the bottom of the outer shell 1, the inner side of the auxiliary support frame 43 is fixedly connected to the outer surface of the bearing seat 42, and the bottom of the bearing seat 42 is fixedly connected to the top of the auxiliary mounting plate 41, and the auxiliary support frame 43 forms a fixed structure with the auxiliary mounting plate 41 through the bearing seat 42, and the auxiliary support frame 43 and the auxiliary mounting plate 41 are set as a fixed structure, so that the auxiliary support frame 43 will not get loose when providing auxiliary support to the outer shell 1.

[0023] In summary, the high-speed permanent magnet synchronous generator set with reduced friction loss is first based on Figures 1 to 3 , when the staff has finished inspecting the interior of the outer shell 1, the staff will fit the annular mounting frame 62 to the end of the outer shell 1 and fit the positioning block 63 and the auxiliary mounting strip 3 accordingly. Then the staff will turn the fastening bolts 64 to firmly fix the positioning block 63 and the auxiliary mounting strip 3 together to complete the installation of the connecting assembly 6. At this time, the outer surface of the output shaft 5 is connected to the inside of the driving bearing 65. The staff will grab the outer shell 1 and fit the auxiliary mounting plate 41 on the mounting point to achieve the purpose of preliminary installation of the generator set. The staff turns the bolts to fix the auxiliary mounting plate 41 and the mounting point to complete the installation of the generator set. Then the staff injects the viscous lubricating oil into the interior of the arc-shaped oil storage tank 71 through the annular mounting frame 62 for storage. Then the staff installs the sealing plug 73 to the top of the oil filling pipe 72. As the generator set continues to run, the lubricating oil in the driving bearing 65 will gradually decrease. At this time, the lubricating oil stored in the arc-shaped oil storage tank 71 will be automatically injected into the interior of the driving bearing 65 through the oil filling pipe 74, so as to further reduce the friction loss of the generator set during continuous operation.

[0024] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A high-speed permanent magnet synchronous generator set with reduced friction loss, comprising an outer shell (1) and an output shaft (5), characterized in that: The outer surface of the outer shell (1) is arc-shaped and fixedly mounted with heat dissipation fins (2) at equal intervals, and the outer surface of the outer shell (1) is annular and fixedly connected with auxiliary mounting strips (3) at equal intervals, and a bearing assembly (4) is fixedly mounted at the bottom of the outer shell (1), the output shaft (5) is mounted inside the outer shell (1), and a connecting assembly (6) is fitted and mounted at the end of the outer shell (1), and an automatic oiling assembly (7) is fixedly connected to the inner surface of the connecting assembly (6), and the connecting assembly (6) includes a protective cover (61), an annular mounting frame (62), and a positioning block (63). , a fastening bolt (64) and a driving bearing (65), and an annular mounting frame (62) is fixedly connected to the outer surface of the end of the protective cover (61), and the outer surface of the annular mounting frame (62) is fixedly mounted with positioning blocks (63) in an annular shape and equidistantly, and the inner thread of the positioning block (63) is connected with the fastening bolt (64), and a driving bearing (65) is fixedly installed inside the protective cover (61), the inner part of the driving bearing (65) is connected to the outer side of the output shaft (5), and the output shaft (5) and the protective cover (61) form a rotating structure through the driving bearing (65), and the The number of the positioning blocks (63) is four, and the four positioning blocks (63) are installed in an annular shape and at equal distances on the outer surface of the annular mounting frame (62), and the installation positions of the positioning blocks (63) correspond to the installation positions of the auxiliary mounting strips (3) one by one, and the inner sides of the positioning blocks (63) are closely connected to the ends of the auxiliary mounting strips (3). The automatic oil filling assembly (7) comprises an arc-shaped oil storage bin (71), an oil filling pipe (72), a sealing plug (73), an oil filling pipe (74) and a heat preservation pad (75), and the top of the arc-shaped oil storage bin (71) is embedded with an oil filling pipe (72), and the oil filling pipe (74) is connected to the inner side of the positioning block (63). The outer side of the tube (72) is fixedly connected to the inside of the protective cover (61), and a sealing plug (73) is installed on the top of the oil filling tube (72) in a snap-fit ​​manner. At the same time, an oil filling tube (74) is symmetrically installed at the bottom of the arc-shaped oil storage bin (71). The other end of the oil filling tube (74) is connected to the inside of the driving bearing (65), and a heat insulation pad (75) is symmetrically fixedly installed on the left and right sides of the arc-shaped oil storage bin (71). The internal size of the end of the oil filling tube (72) is completely consistent with the external size of the bottom of the sealing plug (73), and the oil filling tube (72) and the sealing plug (73) form a snap-fit ​​structure.

2. A high-speed permanent magnet synchronous generator set with reduced friction loss according to claim 1, characterized in that: The bearing assembly (4) comprises an auxiliary mounting plate (41), a bearing seat (42) and an auxiliary support frame (43), wherein the bearing seat (42) is fixedly mounted on the top of the auxiliary mounting plate (41), and the auxiliary support frame (43) is symmetrically mounted on the front and rear sides of the bearing seat (42), and the top of the bearing seat (42) is fixedly connected to the bottom of the outer shell (1).

3. A high-speed permanent magnet synchronous generator set with reduced friction loss according to claim 2, characterized in that: The inner side of the auxiliary support frame (43) is fixedly connected to the outer surface of the bearing seat (42), and the bottom of the bearing seat (42) is fixedly connected to the top of the auxiliary mounting plate (41), and the auxiliary support frame (43) forms a fixed structure through the bearing seat (42) and the auxiliary mounting plate (41).

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