CN216209299U - Universal test connecting device for marine shaft-hung type shaft generator - Google Patents
Universal test connecting device for marine shaft-hung type shaft generator Download PDFInfo
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- CN216209299U CN216209299U CN202122480081.8U CN202122480081U CN216209299U CN 216209299 U CN216209299 U CN 216209299U CN 202122480081 U CN202122480081 U CN 202122480081U CN 216209299 U CN216209299 U CN 216209299U
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Abstract
The utility model discloses a universal test connecting device for a marine shaft-hung type shaft generator, and belongs to the technical field of test detection of marine shaft generators. Comprises a universal bearing support and a main shaft; the universal bearing support is provided with a bearing seat at the top, a universal base is arranged at the bottom, and a lifting foot-padding sliding block is arranged on a universal base body; the main shaft comprises a shaft body, bearings are respectively installed at two ends of the shaft body, the shaft body is installed on a bearing seat of the universal bearing support through bearings at two ends, and at least two fixing flanges are arranged on the shaft body between the bearings at two ends. According to the utility model, the height of the lifting foot-cushion sliding block on the universal base can be adjusted, the bearing support is universal, and the adjustment of the center height of the shafting and the center line of the shafting can be facilitated. The universal spindle is realized by arranging a plurality of fixed flanges on the spindle body of the spindle; the adapter flange is arranged on the fixed flange and can be matched with a non-standardized generator intermediate flange, and the expansibility of the main shaft is realized.
Description
Technical Field
The utility model relates to a universal test connecting device for a marine shaft-hung type shaft generator, belongs to the technical field of test detection of marine shaft generators, and is mainly used for delivery and type tests of marine shaft-hung type shaft generators.
Background
With the gradual improvement of the requirements of ship energy conservation and environmental protection and the great increase of ship power consumption, the capacity demand of a ship power generation system is gradually increased, so that the application of a ship shaft generator is approved by the industry, the shaft generator becomes standard configuration on a large number of bulk cargo ships and container ships, the installed power of the shaft generator is gradually increased, and the high-power generation system is expanded to 2MW to 3 MW.
The traditional shaft power generation system mostly adopts a speed-up gear box and a high-speed generator (an electric excitation generator or a permanent magnet generator), and after the power generation capacity is increased, the scheme causes the increase of the occupied space of the power generation system, the increase of the number of accessories of the speed-up gear box and the increase of the workload of use and maintenance, and brings a lot of limitations to the arrangement in a ship engine room.
With the development of new technology, permanent magnet generators are widely applied in various industries, the reliability of the permanent magnet generators is gradually verified, and the permanent magnet generators and propulsion motors are also gradually introduced into the ship industry.
Under the background, the marine shaft-hung type permanent magnet synchronous generator is applied to the ship industry, the advantages of the marine shaft-hung type permanent magnet synchronous generator are paid much attention, the shaft-hung type permanent magnet synchronous generator is arranged at the tail end of a ship propulsion shaft, the effective space of the marine shaft-hung type permanent magnet synchronous generator is fully utilized, the low-speed permanent magnet power generation technology is adopted, the traditional speed-up gear box is omitted, the space arrangement of a cabin is more flexible, the efficiency of the permanent magnet generator is higher than that of the traditional electric excitation generator, and the advantages of the marine shaft-hung type permanent magnet synchronous generator in the field of high-power shaft generators are obvious.
As shown in fig. 1, for a schematic connection diagram of a shaft-hung permanent magnet generator on a ship, an output end of a marine diesel main engine 1 is connected with an input end of a shaft-hung permanent magnet synchronous generator 4, an output end of the shaft-hung permanent magnet synchronous generator 4 is connected with a ship propulsion propeller 6, the marine diesel main engine 1, the shaft-hung permanent magnet synchronous generator 4 and the ship propulsion propeller 6 are connected through connection main shafts 2 of all parts, wherein the connection main shaft 2 of the output end of the marine diesel main engine 1 is installed on a ship bearing support 3, and the connection main shaft 2 of the output end of the shaft-hung permanent magnet synchronous generator 4 is installed on a generator output bearing support 5.
However, because the shaft-hung permanent magnet generator adopts a shaftless design mode, a ship propulsion main shaft is required to be used as a generator rotor, so that the shaft-hung permanent magnet generator is different from a traditional motor in relevant performance tests when leaving a factory, and the operation test of the generator can be carried out only by additionally installing a test main shaft.
The existing test connection device and the realization method thereof comprise the following steps:
(1) designing and manufacturing a main shaft, a bearing support and other parts, centering and installing and debugging the main shaft, the bearing support and other parts with the generator, and then carrying out a relevant test on the shaft generator.
a. A main shaft design process: designing a test main shaft according to the size of a middle hole of a tested shaft generator, the system torque and the rotating speed, designing a bearing support according to the size, the rotating speed, the torque and the center height of the test main shaft, and finally determining design parameters such as the length of the test main shaft according to the length of the shaft generator;
b. centering operation: and performing shafting centering according to the central position of the bearing support, the size of the test main shaft and the size of the shaft generator, wherein the centering precision is required to be 1 mm.
(2) The marine main shaft is adopted, and the installation and centering work is carried out after the bearing support is newly added.
After the marine main shaft reaches a generator manufacturing plant, supporting bearings at two ends are additionally installed, a bearing support is newly manufactured, the bearing support is connected with a generator flange through a main shaft flange, and the center height and the shafting center line of the bearing support, the generator and the main shaft are adjusted. The adjustment steps and requirements are the same as in step (1).
(3) The shaft generator is not subjected to a factory test, and is directly tested after being installed on a real ship.
In view of the complexity of the test tool or the test cost, some products may transfer the factory test to the final real ship installation for testing.
For the test connection device and the implementation method, the following defects exist:
1. the design and manufacture of the main shaft and related parts are required to be carried out again for shaft generators of different models or sizes, the period is long, the cost is high, the connecting device cannot be used repeatedly, and the product cost is increased indirectly.
2. Because the bearing needs to be additionally arranged in the test process, the functional requirements of the main shaft are increased, and the manufacturing period of the marine main shaft is prolonged; due to the unpredictability of the test, the marine main shaft is used for testing, so that the main shaft can be damaged or damaged, and the uncertainty of the delivery of the main shaft is increased; the bearing support and the flange are redesigned and manufactured according to the size of the marine main shaft, and related parts cannot be reused.
3. During testing, shafting centering and adjustment are needed to be carried out on a plurality of components such as a bearing support, a main shaft and a generator, and the components are large in size and weight, so that the centering and adjustment variables are large, the workload is large, and the consumed time is long.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model aims to provide a universal test connecting device for a marine shaft-hung type shaft generator, which is used for meeting the requirements of factory-related tests of the shaft-hung type shaft generator.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
a universal test connecting device for a marine shaft-hung type shaft generator comprises a universal bearing support and a main shaft;
the universal bearing support is provided with a bearing seat at the top, a universal base is arranged at the bottom, a lifting foot-padding sliding block capable of performing horizontal displacement and vertical horizontal displacement on a laboratory iron bottom plate with a guide groove is arranged on a universal base body, and the vertical height of the lifting foot-padding sliding block on the universal base can be adjusted;
the main shaft comprises a shaft body, bearings and fixing flanges, the bearings are installed at two ends of the shaft body respectively, the shaft body is installed on a bearing seat of the universal bearing support through the bearings at two ends, and the shaft body between the bearings at two ends is at least provided with two fixing flanges.
The main shaft is provided with a plurality of fixing flanges, and the main shaft is provided with a plurality of fixing flanges.
As a preferred example, the bearing seat is a split bearing seat.
As a preferred example, the fixed flange and the shaft body are integrally connected.
The utility model has the beneficial effects that:
(1) according to the utility model, the main shaft is arranged on the bearing seats of the bilateral universal bearing supports through the bearings, the lifting foot-padding sliding block capable of performing horizontal displacement and vertical horizontal displacement is arranged on the universal base body, the height of the lifting foot-padding sliding block on the universal base can be adjusted, the bearing support is universal, the adjustment of the center height of the shafting and the center line of the shafting can be facilitated, and the adjustment workload in the installation process of the generator is reduced;
(2) according to the utility model, the shaft body of the main shaft is provided with the plurality of fixing flanges, and the plurality of fixing flanges can realize the matching of the intermediate flanges of different generators, so that the generalization of the main shaft is realized; the adapter flange is arranged on the fixed flange, so that the adapter flange can be matched with a non-standardized generator intermediate flange, the expansibility of a main shaft is realized, the efficiency of preparation work before generator tests is improved, the preparation work content before the tests of generators of different types is reduced, and the system test cost is saved;
(3) according to the utility model, the bearing seat adopts a split type bearing seat, so that the bearing of the main shaft can be conveniently mounted and dismounted;
(4) according to the utility model, the fixed flange and the shaft body are designed into an integrated connection mode, so that the precision and the integral reliability of flange connection can be improved.
Drawings
FIG. 1 is a schematic diagram of a connection of a shaft-embracing permanent magnet generator on a ship;
FIG. 2 is a schematic structural view of a spindle in embodiment 1 of the present invention;
FIG. 3 is a schematic structural diagram of a test connection device with a transfer flange in an embodiment 1 of the present invention, which is applied to a shaftless generator;
fig. 4 is a schematic structural diagram of a test connection device without a transfer flange according to embodiment 2 of the present invention, which is applied to a shaftless generator;
fig. 5 is a schematic perspective view of a bearing seat according to the present invention.
In the figure: 1. a marine diesel host; 2. connecting the main shaft; 3. a marine bearing support; 4. a shaft-hung permanent magnet synchronous generator; 5. a generator output bearing support; 6. a marine propulsion propeller; 7. a universal bearing support; 71. a support body; 72. a universal base; 73. a lifting foot pad slide block; 74. a bearing seat; 741. an upper half part; 742. a lower half; 743. a bolt; 8. a main shaft; 81. a shaft body; 82. a bearing; 83. a fixed flange; 9. a transfer flange; 10. a laboratory iron base plate; 11. a shaft-hung permanent magnet generator; 12. a middle flange; 13. a generator base.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the utility model easy to understand, the utility model is further described with reference to the specific drawings and the embodiments.
Example 1:
as shown in fig. 2 to fig. 3, embodiment 1 of the present invention provides a universal test connection device for a marine shafting type shaft generator, including a universal bearing support 7, a main shaft 8 and an adapter flange 9.
The bottom of the universal bearing support 7 is in a universal base style, a universal base 72 is installed at the bottom of a support body 71 of the universal bearing support 7, the bottom of the universal bearing support 7 is fixedly installed by using a laboratory iron base plate 10 in the prior art, and the laboratory iron base plate 10 is provided with a plurality of guide grooves in the X-Y direction. The top of the universal bearing support 7 is the mounting position of the bearing 82 of the main shaft 8, and the bottom of the universal base 72 is designed with an adjustable lifting foot pad sliding block 73 which, in the embodiment, the lifting foot-pad sliding block 73 is combined by a screw rod and a sliding block, the screw rod is integrally connected above the sliding block, a screw hole is arranged at the center below the universal base 72, the screw rod and the screw hole of the lifting foot-pad sliding block 73 are in threaded connection, therefore, the lifting foot-rest sliding block 73 moves in the guide groove through the sliding block, so that the universal bearing support 7 can perform horizontal displacement on the iron bottom plate 10 in the transverse direction and vertical horizontal displacement, the lifting foot-rest sliding block 73 can move in the screw hole through the depth of the screw rod, so that the vertical height of the adjustable lifting foot rest slider 73 on the universal base 72 can be adjusted, and then the whole height of the universal bearing support 7 is adjusted, and after the adjustment is finished, the universal bearing support is fixed with the laboratory iron floor 10 through a fixing bolt.
The bearing seat 74 is installed on the top of the support body 71 of the universal bearing support, as shown in fig. 3 and 5, the bearing seat 74 is a split bearing seat, and includes two components, namely a lower half 741 and an upper half 742, and the two components are fastened by a bolt 743, and the upper half 741 and the lower half 742 can be opened, so that the bearing 82 of the main shaft 8 can be conveniently installed and detached.
Through adjustment, the center height of the universal bearing supports 7 on the two sides is aligned with the center line of the shafting.
In this embodiment 1, the main shaft 8 includes a shaft body 81, bearings 82 and fixing flanges 83, the bearings 82 are respectively installed at two ends of the shaft body 81, the shaft body 81 is installed on the bearing seat 74 of the universal bearing support 7 through the bearings 82 at two ends, so as to implement connection between the main shaft 8 and the universal bearing support 7, as shown in fig. 2, two fixing flanges 83 are arranged on the shaft body 81 between the bearings 82 at two ends, the fixing flanges 83 are used for connecting the intermediate flange 12 of the spindle-type permanent magnet generator 11, and the fixing flanges 83 and the shaft body 81 are integrally connected, so that precision and overall reliability during flange connection can be greatly improved. As shown in fig. 3, a generator base 13 is installed on a laboratory iron floor 10, a shaft-hung permanent magnet generator 11 is installed on the generator base 13, an intermediate flange 12 of the shaft-hung permanent magnet generator 11 in fig. 3 is a non-compatible intermediate flange 12, and for the non-compatible intermediate flange 12 in this embodiment 1, the support of the intermediate flanges 12 of the generators of different specifications is realized by connecting an adapter flange 9 to a fixing flange 83 of a main shaft 8 and then connecting to the intermediate flange 12 of the shaft-hung permanent magnet generator 11.
Example 2:
as shown in fig. 4, the wrap-around permanent magnet generator 11 according to embodiment 2 of the present invention has a conventional and compatible intermediate flange 12, and the fixing flange 83 according to the present invention can be directly connected to the intermediate flange 12 without using the adaptor flange 9.
The test connecting device is compatible with a 300 kW-4 MW shaft generator, and the height of the whole universal bearing support 7, the size of a main shaft 8 and the size of a support bearing 82 are determined according to the power, the rotating speed and the center height of the generator.
The mounting and adjusting mode between the universal test connecting device and the shaft-hung permanent magnet generator 11 is as follows:
(1) hoisting the universal bearing support 7 on both sides, adjusting a lifting pad foot slide block 73 at the bottom of the universal base 72 by using a laser centering instrument or an instrument with the same function to realize fine adjustment of the horizontal position of the universal bearing support 7, and after the adjustment is finished, locking the universal bearing support 7 by using a fastening bolt and a pressing plate to finish the installation of the universal bearing support 7;
(2) hoisting the shaft-hung permanent magnet generator 11, heightening the shaft-hung permanent magnet generator 11 according to the center height difference, and adjusting the height of the lifting foot-supporting slide block 73 to ensure that the central lines of the universal bearing supports 7 on two sides, the shaft-hung permanent magnet generator 11 and the shafting central line are kept consistent;
(3) hoisting the main shaft 8, wherein the universal bearing supports 7 on the two sides are in a centering state, and finely adjusting the position of the shaft-hung permanent magnet generator 11 according to the main shaft 8 to finally finish centering and adjusting all parts;
(4) and the test of the installation condition of the shafting is realized through trial rotation.
The technical scheme of the utility model has the following beneficial effects:
according to the utility model, the main shaft 8 is arranged on the bearing seats 74 of the double-side universal bearing supports 7 through the bearings 82, the lifting foot-cushion sliding blocks 73 capable of performing horizontal displacement and vertical horizontal displacement are arranged on the universal base 72 body, the height of the lifting foot-cushion sliding blocks 73 on the universal base 72 can be adjusted, the bearing support universalization is realized, the adjustment of the center height of a shafting and the center line of the shafting can be facilitated, and the adjustment workload in the installation process of a generator is reduced;
the shaft body 81 of the main shaft 8 is provided with the plurality of fixing flanges 83, so that the plurality of fixing flanges 83 can realize matching of the intermediate flanges 12 of different generators, and the generalization of the main shaft 8 is realized; the adapter flange 9 is arranged on the fixed flange 83, can be matched with the non-standardized generator intermediate flange 12, realizes the expansibility of the main shaft 8, improves the efficiency of preparation work before generator tests, reduces the content of the preparation work before the tests of generators of different types, and saves the cost of system tests.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (4)
1. A universal test connecting device for a marine shaft-hung type shaft generator is characterized by comprising a universal bearing support (7) and a main shaft (8);
a bearing seat (74) is installed at the top of the universal bearing support (7), a universal base (72) is arranged at the bottom of the universal bearing support (7), and a lifting foot pad sliding block (73) is arranged on the body of the universal base (72);
the main shaft (8) comprises a shaft body (81), bearings (82) and fixing flanges (83), the bearings (82) are respectively installed at two ends of the shaft body (81), the shaft body (81) is installed on a bearing seat (74) of the universal bearing support (7) through the bearings (82) at two ends, and at least two fixing flanges (83) are arranged on the shaft body (81) between the bearings (82) at two ends.
2. The universal test connection device for the marine shaft-hung type shaft generator according to claim 1, characterized by further comprising an adapter flange (9), wherein the adapter flange (9) is connected to any one fixing flange (83) of the main shaft (8).
3. The universal test connection device for the marine shaft-hung type shaft generator according to claim 1, characterized in that the bearing seat (74) is a split type bearing seat.
4. The universal test connection device for the marine shafting type shaft generator according to claim 1, wherein the fixing flange (83) and the shaft body (81) are integrally connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122480081.8U CN216209299U (en) | 2021-10-14 | 2021-10-14 | Universal test connecting device for marine shaft-hung type shaft generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122480081.8U CN216209299U (en) | 2021-10-14 | 2021-10-14 | Universal test connecting device for marine shaft-hung type shaft generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216209299U true CN216209299U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122480081.8U Active CN216209299U (en) | 2021-10-14 | 2021-10-14 | Universal test connecting device for marine shaft-hung type shaft generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216209299U (en) |
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2021
- 2021-10-14 CN CN202122480081.8U patent/CN216209299U/en active Active
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