CN114353850A - Aerogenerator encoder detection device - Google Patents
Aerogenerator encoder detection device Download PDFInfo
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- CN114353850A CN114353850A CN202111450658.9A CN202111450658A CN114353850A CN 114353850 A CN114353850 A CN 114353850A CN 202111450658 A CN202111450658 A CN 202111450658A CN 114353850 A CN114353850 A CN 114353850A
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Abstract
The invention provides a detection device for an encoder of a wind driven generator, which comprises a detection cabinet, wherein the detection cabinet comprises a touch screen, a PLC (programmable logic controller) and a frequency converter, the touch screen is electrically connected with the PLC, the frequency converter is electrically connected with the PLC, and the PLC is electrically connected with the encoder; and the detection table comprises a motor and an encoder, and the output end of the motor is connected with the encoder. The invention can quickly detect the problems of the encoder in the operation process, and simultaneously can quickly block the transmission between the motor and the encoder, thereby effectively avoiding the influence on the encoder after the motor stalls.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a detection device for an encoder of a wind driven generator.
Background
At present, an encoder has the characteristics of small volume and high resolution, when the encoder is in fault of unstable signal system and signal interference, the fault is most difficult to find, and if any one of the problems of loose installation of the encoder, a cable shielding wire, an encoder, encoder components and gratings, and the like is connected with a cable, a cable shielding wire, the encoder, the grid-connected system of the wind driven generator can be in fault.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
In order to solve the technical problems, the invention provides the following technical scheme: the detection device for the encoder of the wind driven generator comprises a detection cabinet, wherein the detection cabinet comprises a touch screen, a PLC (programmable logic controller) and a frequency converter, the touch screen is electrically connected with the PLC, the frequency converter is electrically connected with the PLC, and the PLC is electrically connected with the encoder; and the detection table comprises a motor and an encoder, and the output end of the motor is connected with the encoder.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: and a coupling component is arranged between the output end of the motor and the encoder.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: the coupling assembly comprises a transmission mechanism and an end cover mechanism, and the transmission mechanism is located inside the end cover mechanism.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: the transmission mechanism comprises a first shaft, a second shaft and a friction mechanism, the first shaft and the second shaft are arranged concentrically, the first shaft is fixedly connected with an output shaft of the motor, the second shaft is fixedly connected with the encoder, and the friction mechanism is arranged at one end, close to the first shaft and the second shaft, of the first shaft.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: the end cover mechanism comprises a first end cover and a second end cover, the first end cover is movably connected with the second end cover, a cavity is arranged between the first end cover and the second end cover, and one ends, close to the first shaft and the second shaft, of the first shaft and the second shaft are located in the cavity.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: the friction mechanism comprises a first friction block, a second friction block and a plurality of springs, a circular sleeve is arranged on the first friction block, a limiting part is arranged between the first shaft and the circular sleeve and connected with the first shaft, one end of each spring is fixedly connected with one end of the first friction block, the other end of each spring is fixedly connected with the inner surface of the first end cover, and one end of each second friction block is fixedly connected with the second shaft.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: the locating part includes spacing recess and stopper, spacing recess sets up on circular sleeve inner wall, spacing recess distributes along circular sleeve's radial equidistance, primary shaft one end is equipped with the stopper, the stopper cooperatees with spacing recess.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: the first end cover is provided with a clamping groove, the clamping groove is connected with the first end cover through bolts, and the position, close to the first end cover, of the second end cover is provided with a limiting convex edge along the circumferential direction.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: the coupling assembly further includes a disconnect mechanism located within the end cap mechanism.
As a preferable aspect of the wind turbine encoder detection device of the present invention, wherein: the disconnecting mechanism comprises a lever mechanism and a telescopic mechanism, the telescopic mechanism is fixedly arranged on the first end cover, one end of the telescopic mechanism is movably connected with the lever mechanism, and one end of the lever mechanism, which is far away from the telescopic mechanism, is fixedly connected with the first friction block;
the lever mechanism comprises a connecting rod, a cross rod and a fixed block, the fixed block is fixedly connected to the inner surface of the first end cover, the center of the cross rod is movably connected to the fixed block, one end of the connecting rod is movably connected with one end of the cross rod, and the other end of the connecting rod is fixedly connected with a first friction block.
The invention has the beneficial effects that: the invention can quickly detect the problems of the encoder in the operation process, and simultaneously can quickly block the transmission between the motor and the encoder, thereby effectively avoiding the influence on the encoder after the motor stalls.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic diagram of the overall flow structure;
FIG. 2 is a schematic view of the overall structure of the inspection station;
FIG. 3 is a schematic view of the transmission mechanism;
FIG. 4 is a schematic view of the disconnect mechanism;
fig. 5 is a schematic diagram of the overall explosion structure.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Example 1
The embodiment provides a wind driven generator encoder detection device, as shown in figures 1-5,
the device comprises a detection cabinet 100, wherein the detection cabinet 100 comprises a touch screen 101, a PLC (programmable logic controller) 102 and a frequency converter 103, the touch screen 101 is electrically connected with the PLC 102, the frequency converter 103 is electrically connected with the PLC 102, and the PLC 102 is electrically connected with an encoder 202; and the detection table 200, the detection table 200 comprises a motor 201 and an encoder 202, and the output end of the motor 201 is connected with the encoder 202.
The wind driven generator rotary encoder is a measuring device of a doubly-fed wind driven generator frequency conversion system, converts an angular displacement signal to be measured into a high-speed pulse signal and transmits the high-speed pulse signal to a frequency converter 103 of the wind driven generator, and the frequency converter 103 adjusts output data of the frequency converter 103 according to a feedback signal of an encoder 202 to control the wind driven generator to run in a grid-connected mode.
The A, B, Z three-phase pulse high-speed pulse signal of the rotary encoder 202 is input to the PLC controller 102, and the pulse signal thereof is counted by a high-speed counter of the PLC controller 102 to obtain a measurement result. Therefore, the method has important value for performing the work of state maintenance, fault maintenance, technical test and the like of the wind driven generator encoder 202.
Example 2
The present embodiment provides a wind turbine encoder detection device, as shown in fig. 1 to 5, and the present embodiment is based on embodiment 1 but differs from embodiment 1 in that:
a coupling assembly 300 is arranged between the output end of the motor 201 and the encoder 202.
The coupling assembly 300 comprises a transmission mechanism 301 and an end cover mechanism 302, wherein the transmission mechanism 301 is located inside the end cover mechanism 302.
The transmission mechanism 301 comprises a first shaft 301a, a second shaft 301b and a friction mechanism 301c, wherein the first shaft 301a and the second shaft 301b are concentrically arranged, the first shaft 301a is fixedly connected with an output shaft of the motor 201, the second shaft 301b is fixedly connected with the encoder 202, and the friction mechanism 301c is arranged at one end, close to the second shaft 301b, of the first shaft 301 a.
The end cover mechanism 302 includes a first end cover 302a and a second end cover 302b, the first end cover 302a is movably connected with the second end cover 302b, a cavity is provided between the first end cover 302a and the second end cover 302b, and the ends of the first shaft 301a and the second shaft 301b close to each other are located inside the cavity.
The first shaft 301a is a driving shaft, the first shaft 301a and the second shaft 301b are arranged concentrically, the first shaft 301a drives the second shaft 301b to rotate through friction force generated by the friction mechanism 301c, the first end cover 302a and the second end cover 302b are both hollow cylinders with one open ends, through holes are formed in two ends of the first end cover 302a and the second end cover 302b, the first shaft 301a extends into the first end cover 302a from the through hole of the first end cover 302a, and the second shaft 301b extends into the second end cover 302b from the through hole of the second end cover 302 b. The end cover mechanism 302 is internally provided with a disconnecting mechanism 303, when the first shaft 301a and the second shaft 301b have an emergency accident and need to be stopped, the disconnecting mechanism 303 is operated to disconnect the transmission mechanism 301, and the whole equipment does not need to be stopped.
The friction mechanism 301c comprises a first friction block 301c-1, a second friction block 301c-2 and a plurality of springs 301c-3, wherein a circular sleeve 301c-11 is arranged on the first friction block 301c-1, a limiting piece 301c-4 is arranged between the first shaft 301a and the circular sleeve 301c-11 for connection, one end of each of the plurality of springs 301c-3 is fixedly connected with one end of the first friction block 301c-1, the other end of each of the plurality of springs 301c-3 is fixedly connected with the inner surface of the first end cover 302a, and one end of the second friction block 301c-2 is fixedly connected with the second shaft 301 b.
One end of each of the springs 301c-3 is fixed on the first friction block 301c-1, the other end of each of the springs 301c-3 is fixed on the inner surface of the first end cover 302a, the first friction block 301c-1 is tightly attached to the second friction block 301c-2 under the action of the spring 301c-3, and then the first friction block 301c-1 can drive the second friction block 301c-2 to rotate.
The first friction block 301c-1 and the second friction block 301c-2 are made of materials with larger friction coefficients, such as: the asbestos-based friction material has a large friction coefficient and can generate large friction force. Therefore, when the second shaft 301b rotates, the first shaft 301a rotates together with the second shaft 301b under the action of friction force; when the first shaft 301a rotates, the first friction block 301c-1 is provided with a circular sleeve 301c-11, and the second shaft 301b rotates together with the first shaft 301a under the action of friction force because a limiting member 301c-4 is arranged between the first shaft 301a and the circular sleeve 301 c-11.
The limiting piece 301c-4 comprises limiting grooves 301c-41 and limiting pieces 301c-42, the limiting grooves 301c-41 are arranged on the inner wall of the circular sleeve 301c-11, the limiting grooves 301c-41 are distributed along the radial direction of the circular sleeve 301c-11 at equal intervals, the limiting pieces 301c-42 are arranged at one end of the first shaft 301a, and the limiting pieces 301c-42 are matched with the limiting grooves 301 c-41.
One end of the first shaft 301a is provided with a limit block 301c-42, the limit block 301c-42 is matched with the limit groove 301c-41 on the inner wall of the circular sleeve 301c-11, the side edge of the limit block 301c-42 is attached to the inner wall of the limit groove 301c-41, and therefore the first shaft 301a and the first friction block 301c-1 cannot rotate relatively, but the first shaft 301a is not influenced to move in the circular sleeve 301c-11 along the axial direction of the first shaft.
The first end cap 302a is provided with a clamping groove 302a-1, the clamping groove 302a-1 is connected with the first end cap 302a through bolts, and the second end cap 302b is provided with a limiting convex edge 302b-1 along the circumferential direction at a position close to the first end cap 302 a.
In actual operation, the first end cap 302a is attached to the opening of the second end cap 302b, and then the locking groove 302a-1 is fixed, at this time, the position-limiting flange 302b-1 is just located in the groove of the locking groove 302a-1, and the edge of the position-limiting flange 302b-1 is attached to the side edge of the locking groove 302a-1 for limiting, so that the first end cap 302a is prevented from rotating along the axial direction and the radial direction thereof, but is not limited from rotating along the center of a circle.
The disconnecting mechanism 303 comprises a lever mechanism 303a and a telescopic mechanism 303b, the telescopic mechanism 303b is fixedly arranged on the first end cover 302a, one end of the telescopic mechanism 303b is movably connected with the lever mechanism 303a, and one end of the lever mechanism 303a far away from the telescopic mechanism 303b is fixedly connected with the first friction block 301 c-1.
The lever mechanism 303a comprises a connecting rod 303a-1, a cross rod 303a-2 and a fixed block 303a-3, the fixed block 303a-3 is fixedly connected to the inner surface of the first end cover 302a, the center of the cross rod 303a-2 is movably connected to the fixed block 303a-3 and is connected by a pin, one end of the connecting rod 303a-1 is movably connected to one end of the cross rod 303a-2, one end of the connecting rod 303a-1 is connected to the cross rod 303a-2 by the pin, and the other end of the connecting rod 303a-1 is fixedly connected to a first friction block 301 c-1. The telescoping mechanism 303b is an electric telescoping rod, which is fixedly connected to the first end cap 302 a.
When the electric telescopic rod extends, one end of the cross rod 303a-2 connected with the electric telescopic rod is forced to move in a direction away from the first end cover 302a, and then the other end of the cross rod 303a-2 moves in a direction close to the first end cover 302a, so that the connecting rod 303a-1 is driven to move in a direction close to the first end cover 302a, one end of the connecting rod 303a-1 is connected with the first friction block 301c-1, so that the first friction block 301c-1 moves in a direction close to the first end cover 302a, and at the moment, the first friction block 301c-1 is separated from the second friction block 301 c-2. And the transmission of the first shaft 301a and the second shaft 301b is blocked.
The first friction block 301c-1 and the second friction block 301c-2 are provided with protrusions on the sides close to each other. The protrusions can effectively increase the friction force between the first friction block 301c-1 and the second friction block 301c-2, effectively increase the transmission efficiency, and clearly observe the abrasion degree of the first friction block 301c-1 and the second friction block 301 c-2.
The first friction block 301c-1 and the second friction block 301c-2 are both provided with vent holes. The ventilation holes can effectively increase heat dissipation, improve the friction effect between the first friction block 301c-1 and the second friction block 301c-2, and avoid slipping caused by overhigh temperature between the first friction block 301c-1 and the second friction block 301 c-2.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a aerogenerator encoder detection device which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the detection cabinet (100) comprises a touch screen (101), a PLC (programmable logic controller) (102) and a frequency converter (103), wherein the touch screen (101) is electrically connected with the PLC (102), the frequency converter (103) is electrically connected with the PLC (102), and the PLC (102) is electrically connected with an encoder (202); and the number of the first and second groups,
the detection table (200) comprises a motor (201) and an encoder (202), and the output end of the motor (201) is connected with the encoder (202).
2. The wind turbine encoder detection device of claim 1, wherein: and a coupling assembly (300) is arranged between the output end of the motor (201) and the encoder (202).
3. The wind turbine encoder detection device of claim 2, wherein: the coupling assembly (300) comprises a transmission mechanism (301) and an end cover mechanism (302), wherein the transmission mechanism (301) is located inside the end cover mechanism (302).
4. The wind turbine encoder detection device of claim 3, wherein: the transmission mechanism (301) comprises a first shaft (301a), a second shaft (301b) and a friction mechanism (301c), the first shaft (301a) is fixedly connected with an output shaft of the motor (201), the second shaft (301b) is fixedly connected with the encoder (202), the first shaft (301a) and the second shaft (301b) are concentrically arranged, and the friction mechanism (301c) is arranged at one end, close to the first shaft (301a) and the second shaft (301b), of the first shaft (301 a).
5. The wind turbine encoder detection device of claim 4, wherein: the end cover mechanism (302) comprises a first end cover (302a) and a second end cover (302b), the first end cover (302a) is movably connected with the second end cover (302b), a cavity is arranged between the first end cover (302a) and the second end cover (302b), and one ends, close to the first shaft (301a) and the second shaft (301b), of the first end cover and the second end cover are located in the cavity.
6. The wind turbine encoder detection device of claim 5, wherein: the friction mechanism (301c) comprises a first friction block (301c-1), a second friction block (301c-2) and a plurality of springs (301c-3), a round sleeve (301c-11) is arranged on the first friction block (301c-1), a limiting piece (301c-4) is arranged between the first shaft (301a) and the round sleeve (301c-11) to be connected, one end of each spring (301c-3) is fixedly connected with one end of the first friction block (301c-1), the other end of each spring is fixedly connected with the inner surface of the first end cover (302a), and one end of the second friction block (301c-2) is fixedly connected with the second shaft (301 b).
7. The wind turbine encoder detection device of claim 6, wherein: the limiting piece (301c-4) comprises a limiting groove (301c-41) and a limiting piece (301c-42), the limiting groove (301c-41) is arranged on the inner wall of the round sleeve (301c-11), the limiting groove (301c-41) is distributed along the radial direction of the round sleeve (301c-11) at equal intervals, the limiting piece (301c-42) is arranged at one end of the first shaft (301a), and the limiting piece (301c-42) is matched with the limiting groove (301 c-41).
8. The wind turbine encoder detection device of claim 7, wherein: the first end cover (302a) is provided with a clamping groove (302a-1), the clamping groove (302a-1) is connected with the first end cover (302a) through bolts, and the position, close to the first end cover (302a), of the second end cover (302b) is provided with a limiting convex edge (302b-1) along the circumferential direction.
9. The wind turbine encoder detection device of claim 8, wherein: the coupling assembly (300) further comprises a disconnect mechanism (303), the disconnect mechanism (303) being located inside the end cap mechanism (302).
10. The wind turbine encoder detection device of claim 9, wherein: the disconnecting mechanism (303) comprises a lever mechanism (303a) and a telescopic mechanism (303b), the telescopic mechanism (303b) is fixedly arranged on the first end cover (302a), one end of the telescopic mechanism (303b) is movably connected with the lever mechanism (303a), and one end, far away from the telescopic mechanism (303b), of the lever mechanism (303a) is fixedly connected with the first friction block (301 c-1);
the lever mechanism (303a) comprises a connecting rod (303a-1), a cross rod (303a-2) and a fixing block (303a-3), the fixing block (303a-3) is fixedly connected to the inner surface of the first end cover (302a), the center of the cross rod (303a-2) is movably connected to the fixing block (303a-3), one end of the connecting rod (303a-1) is movably connected with one end of the cross rod (303a-2), and the other end of the connecting rod (303a-1) is fixedly connected with a first friction block (301 c-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111450658.9A CN114353850A (en) | 2021-11-30 | 2021-11-30 | Aerogenerator encoder detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111450658.9A CN114353850A (en) | 2021-11-30 | 2021-11-30 | Aerogenerator encoder detection device |
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| Publication Number | Publication Date |
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| CN114353850A true CN114353850A (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111450658.9A Pending CN114353850A (en) | 2021-11-30 | 2021-11-30 | Aerogenerator encoder detection device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490093A (en) * | 1981-07-13 | 1984-12-25 | U.S. Windpower, Inc. | Windpower system |
| CN2268806Y (en) * | 1996-11-22 | 1997-11-26 | 田贵芬 | Centrifugal lever swinging clutch |
| CN206291922U (en) * | 2016-12-05 | 2017-06-30 | 宁夏恩德众胜风电工程技术服务有限公司 | A kind of wind power generating set motor encoder detecting |
| CN208634243U (en) * | 2018-07-02 | 2019-03-22 | 四川国软科技发展有限责任公司 | The dynamic inspection mechanical arm brake gear of one kind |
| CN110640784A (en) * | 2019-11-05 | 2020-01-03 | 哈尔滨工业大学（深圳） | Variable-rigidity joint device based on lever mechanism |
-
2021
- 2021-11-30 CN CN202111450658.9A patent/CN114353850A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4490093A (en) * | 1981-07-13 | 1984-12-25 | U.S. Windpower, Inc. | Windpower system |
| CN2268806Y (en) * | 1996-11-22 | 1997-11-26 | 田贵芬 | Centrifugal lever swinging clutch |
| CN206291922U (en) * | 2016-12-05 | 2017-06-30 | 宁夏恩德众胜风电工程技术服务有限公司 | A kind of wind power generating set motor encoder detecting |
| CN208634243U (en) * | 2018-07-02 | 2019-03-22 | 四川国软科技发展有限责任公司 | The dynamic inspection mechanical arm brake gear of one kind |
| CN110640784A (en) * | 2019-11-05 | 2020-01-03 | 哈尔滨工业大学（深圳） | Variable-rigidity joint device based on lever mechanism |
Non-Patent Citations (1)
| Title |
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| 罗扬;: "解析编码器在风电控制系统中的应用", 机械, vol. 36, no. 1, pages 15 - 19 * |
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