Unloading device of generator set
By using electromagnetically controlled unloading device in a wind turbine set, the loss and life reduction problems caused by friction in the prior art are solved, and an efficient and stable unloading effect is achieved.
Patent Information
- Application Number
- CN202421740862.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-23
AI Technical Summary
The existing unloading device performs unloading treatment through friction between components, resulting in large friction loss, long-term use to reduce unloading effect, and high temperatures to reduce component life.
Using a device including an unloading ring, a fixing ring and a rotating member, the unloading is performed by using magnetic suction force to avoid frictional losses through the power-on control of the first magnetic suction block and the second magnetic suction block.
A stable and frictionless unloading effect is achieved, improving the service life and practicality of the device.
Smart Images
Figure CN222759897U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of unloading devices, in particular to an unloading device for a generator set. Background Art
[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. A wind turbine generally consists of a wind rotor, a generator (including a device), a direction regulator (tail wing), a tower, a speed limiting safety mechanism, and an energy storage device. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the action of wind, and it converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates and generates electricity driven by the wind rotor shaft. Broadly speaking, wind energy is also solar energy, so it can also be said that a wind turbine is a heat energy generator that uses the sun as a heat source and the atmosphere as a working medium. When a wind turbine encounters strong winds, the wind will be too strong, causing the generator blades to rotate too fast. At this time, the generator speed exceeds the predetermined threshold, and a load unloading device is needed.
[0003] However, most existing unloading devices perform unloading processing through friction between components, and the friction loss is large. Long-term use will reduce its unloading effect. At the same time, friction will generate high temperature, which will reduce the service life of the components.
[0004] Therefore, it is necessary to provide a load unloading device for a generator set to solve the above technical problems. Utility Model Content
[0005] The utility model provides a load unloading device for a generator set, which solves the problem that most existing load unloading devices perform load unloading processing through friction between components, but the friction loss is large, and the load unloading effect will be reduced by long-term use. At the same time, the friction will generate high temperature and reduce the service life of the components.
[0006] The utility model provides an unloading device for a generator set, comprising: an unloading ring, a fixed ring and a rotating part, the outside of the unloading ring is annularly fixedly installed with first magnetic blocks at equal distances, and the number of the first magnetic blocks is multiple, the inner side wall of the fixed ring is annularly fixedly installed with second magnetic blocks at equal distances, and the number of the second magnetic blocks is multiple, the fixed ring is located outside the unloading ring, and the horizontal center line of the unloading ring coincides with the horizontal center line of the fixed ring.
[0007] Preferably, a mounting groove is provided at the center point of one side of the outer portion of the rotating member, and grooves are provided in an equidistant annular shape inside the mounting groove, and the number of the grooves is four. The rotating member is located inside the unloading ring, and the horizontal center line of the rotating member coincides with the horizontal center line of the unloading ring.
[0008] Preferably, the insides of the four grooves are all fitted with protrusions, a rotating shaft is fixedly installed between the four protrusions, and a horizontal center line of the rotating shaft coincides with a horizontal center line of the rotating member.
[0009] Preferably, the outside of the rotating member is provided with first sliding grooves in an equidistant annular shape, and the number of the first sliding grooves is multiple, and the outside of the rotating member is slidably mounted with a first slider through the multiple first sliding grooves, and the first slider is fixed to the rotating member by screws.
[0010] Preferably, a connecting rod is fixedly mounted on the outside of each of the first sliding blocks, and a second sliding block is fixedly mounted on one end of each of the connecting rods.
[0011] Preferably, the inner wall of the unloading ring is provided with second sliding grooves in an equidistant annular shape, and a plurality of the second sliding blocks are slidably mounted on the unloading ring through the plurality of the second sliding grooves, and the second sliding blocks are fixedly mounted on the unloading ring through screws.
[0012] Compared with the related art, the unloading device of a generator set provided by the utility model has the following features:
[0013] Beneficial effects:
[0014] Most of the existing unloading devices perform unloading processing through friction between components, but the friction loss is large, and long-term use will reduce its unloading effect. At the same time, friction will generate high temperature and reduce the service life of the components. When the speed of the wind turbine blade is too fast, the first magnetic block and the second magnetic block are energized. When the first magnetic block is about to move away from the second magnetic block, the same poles attract each other, and resistance is generated for its movement away. When the first magnetic block approaches the second magnetic block, power is supplied to the second magnetic block in the opposite direction, and the same poles repel each other, and resistance is generated for its approach, thereby achieving the effect of unloading. The structure is stable, there will be no friction damage, and it only needs power supply to complete, which improves practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic structural diagram of a preferred embodiment of a load unloading device for a generator set provided by the utility model;
[0016] Figure 2 for Figure 1 The schematic diagram of the rotating shaft installation structure is shown;
[0017] Figure 3 for Figure 1 Schematic diagram of the connecting rod installation structure shown.
[0018] In the figure: 1. unloading ring; 2. first magnetic block; 3. fixed ring; 4. second magnetic block; 5. rotating member; 6. groove; 7. protrusion; 8. rotating shaft; 9. mounting groove; 10. first slide groove; 11. first slider; 12. connecting rod; 13. second slider; 14. second slide groove. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.
[0020] Please refer to Figure 1 , Figure 2 and Figure 3 ,in Figure 1 A schematic structural diagram of a preferred embodiment of a load unloading device for a generator set provided by the utility model; Figure 2 for Figure 1 The schematic diagram of the rotating shaft installation structure is shown; Figure 3 for Figure 1 The schematic diagram of the connecting rod installation structure shown in the figure shows a load-removing device for a generator set, comprising: a load-removing ring 1, a fixed ring 3 and a rotating member 5, the outer portion of the load-removing ring 1 is fixedly provided with a first magnetic block 2 in an equidistant annular shape, and the number of the first magnetic block 2 is multiple, the inner side wall of the fixed ring 3 is fixedly provided with a second magnetic block 4 in an equidistant annular shape, and the number of the second magnetic block 4 is multiple, the fixed ring 3 is located outside the load-removing ring 1, and the horizontal center line of the load-removing ring 1 coincides with the horizontal center line of the fixed ring 3. Most existing load-removing devices perform load-removing processing by friction between components, and friction The loss is large, and long-term use will reduce its unloading effect. At the same time, friction will generate high temperature and reduce the service life of components. When the speed of the wind turbine blade is too fast, the first magnetic block 2 and the second magnetic block 4 are energized. When the first magnetic block 2 is about to move away from the second magnetic block 4, the same poles attract each other, and resistance is generated for its movement away. When the first magnetic block 2 approaches the second magnetic block 4, power is supplied to the second magnetic block 4 in the reverse direction, and the same poles repel each other, and resistance is generated for its approach, thereby playing a role in unloading. The structure is stable, there will be no friction damage, and it only needs power supply to complete, which improves practicality.
[0021] A mounting groove 9 is provided at the center point of one side of the outer portion of the rotating member 5, and grooves 6 are provided in an equidistant ring shape inside the mounting groove 9, and the number of the grooves 6 is four. The rotating member 5 is located inside the unloading ring 1, and the horizontal center line of the rotating member 5 coincides with the horizontal center line of the unloading ring 1. Bumps 7 are mounted inside the four grooves 6, and a rotating shaft 8 is fixedly mounted between the four bumps 7. The horizontal center line of the rotating shaft 8 coincides with the horizontal center line of the rotating member 5, and the rotating shaft 8 is connected to the transmission mechanism of the fan blade. When the fan blade rotates, it drives the transmission mechanism to rotate, and the transmission mechanism drives the rotating shaft 8 to rotate. The cooperation between the bump 7 and the groove 6 makes the rotating shaft 8 rotate, driving the rotating member 5 to rotate.
[0022] The outer part of the rotating member 5 is provided with a first slide groove 10 equidistantly in an annular shape, and the number of the first slide grooves 10 is multiple. The outer part of the rotating member 5 is slidably installed with a first slider 11 through the multiple first slide grooves 10. The first slider 11 is fixedly installed with the rotating member 5 by screws. The outer parts of the multiple first sliders 11 are fixedly installed with connecting rods 12, and one end of the multiple connecting rods 12 is fixedly installed with a second slider 13. The inner wall of the unloading ring 1 is provided with a second slide groove 14 equidistant in an annular shape, and the multiple second sliders 13 are slidably installed with the unloading ring 1 through the multiple second slide grooves 14. The second slider 13 is fixedly installed with the unloading ring 1 by screws. The first slide groove 10 and the second slide groove 14 cooperate to facilitate the installation of the first slider 11, the connecting rod 12 and the second slider 13. When the rotating member 5 rotates, the unloading ring 1 is effectively driven to rotate. The unloading devices used in different wind turbines have different sizes. The length of the connecting rod 12 is made according to the needs, so that the size of the unloading ring 1 and the fixed ring 3 will not deviate too much, thereby ensuring the unloading effect.
[0023] The working principle of the unloading device of a generator set provided by the utility model is as follows:
[0024] The first step: Most of the existing unloading devices unload the load through the friction between the components, but the friction loss is large, and long-term use will reduce its unloading effect. At the same time, friction will generate high temperature and reduce the service life of the components. When the speed of the wind turbine blade is too fast, the first magnetic block 2 and the second magnetic block 4 are energized. When the first magnetic block 2 is about to move away from the second magnetic block 4, the same poles attract each other, and resistance is generated to its movement away. When the first magnetic block 2 approaches the second magnetic block 4, power is supplied to the second magnetic block 4 in the reverse direction, and the same poles repel each other, and resistance is generated to its approach, thereby playing a role in unloading. The structure is stable, there will be no friction damage, and it only needs to be powered, which improves practicality.
[0025] Step 2: The rotating shaft 8 is connected to the transmission mechanism of the fan blade. When the fan blade rotates, it drives the transmission mechanism to rotate, and the transmission mechanism drives the rotating shaft 8 to rotate. The cooperation between the protrusion 7 and the groove 6 makes the rotating shaft 8 rotate and drives the rotating member 5 to rotate. The cooperation between the first slide groove 10 and the second slide groove 14 facilitates the installation of the first slider 11, the connecting rod 12 and the second slider 13. When the rotating member 5 rotates, it effectively drives the unloading ring 1 to rotate. The unloading devices used in different wind turbines have different sizes. The length of the connecting rod 12 is made according to the needs, so that the size of the unloading ring 1 and the fixed ring 3 will not deviate too much, thereby ensuring the unloading effect.
[0026] Compared with the related art, the unloading device of a generator set provided by the utility model has the following features:
[0027] Beneficial effects:
[0028] Most of the existing unloading devices perform unloading processing through friction between components, but the friction loss is large, and long-term use will reduce its unloading effect. At the same time, friction will generate high temperature and reduce the service life of the components. When the speed of the wind turbine blade is too fast, the first magnetic block 2 and the second magnetic block 4 are energized. When the first magnetic block 2 is about to move away from the second magnetic block 4, the same poles attract each other, and resistance is generated for its movement away. When the first magnetic block 2 approaches the second magnetic block 4, power is supplied to the second magnetic block 4 in the reverse direction, and the same poles repel each other, and resistance is generated for its approach, thereby playing a role in unloading. The structure is stable, there will be no friction damage, and it only needs to be powered, which improves practicality.
[0029] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A load unloading device for a generator set, comprising: The unloading ring (1), the fixed ring (3) and the rotating part (5) are characterized in that: the first magnetic block (2) is fixedly installed in an equidistant ring shape on the outside of the unloading ring (1), and the number of the first magnetic block (2) is multiple; the second magnetic block (4) is fixedly installed in an equidistant ring shape on the inner side wall of the fixed ring (3), and the number of the second magnetic block (4) is multiple; the fixed ring (3) is located outside the unloading ring (1), and the horizontal center line of the unloading ring (1) and the horizontal center line of the fixed ring (3) coincide with each other.
2. A load unloading device for a generator set according to claim 1, characterized in that: A mounting groove (9) is provided at the center point of one side of the outer portion of the rotating member (5), and grooves (6) are provided in an equidistant annular shape inside the mounting groove (9), and the number of the grooves (6) is four. The rotating member (5) is located inside the unloading ring (1), and the horizontal center line of the rotating member (5) coincides with the horizontal center line of the unloading ring (1).
3. A load unloading device for a generator set according to claim 2, characterized in that: The four grooves (6) are all fitted with protrusions (7), a rotating shaft (8) is fixedly mounted between the four protrusions (7), and the horizontal center line of the rotating shaft (8) coincides with the horizontal center line of the rotating member (5).
4. A load unloading device for a generator set according to claim 3, characterized in that: The rotating member (5) is provided with first slide grooves (10) in an equidistant annular shape on the outside, and the number of the first slide grooves (10) is multiple. The rotating member (5) is provided with a first sliding block (11) slidably mounted on the outside through the multiple first sliding grooves (10). The first sliding block (11) is fixedly mounted on the rotating member (5) by screws.
5. The unloading device of a generator set according to claim 4, characterized in that: A connecting rod (12) is fixedly mounted on the outside of each of the plurality of first sliding blocks (11), and a second sliding block (13) is fixedly mounted on one end of each of the plurality of connecting rods (12).
6. The unloading device of a generator set according to claim 5, characterized in that: The inner wall of the unloading ring (1) is provided with second sliding grooves (14) in an equidistant manner, and a plurality of the second sliding blocks (13) are slidably mounted on the unloading ring (1) via the plurality of the second sliding grooves (14), and the second sliding blocks (13) are fixedly mounted on the unloading ring (1) via screws.