Fan inertia variable simulation experiment equipment

Abstract

The utility model relates to the technical field of monitoring or testing of wind engines, such as diagnosis, and discloses a fan inertia variable simulation experiment device which comprises a test bed body, a fan is arranged on the upper side of the test bed body, a supporting rod is fixedly connected to the lower side of the outer surface of the fan, and a fixing block is fixedly connected to the lower end of the supporting rod. A limiting groove is formed in the upper side of the test bed body and is in a convex shape, the supporting rod extends into the limiting groove, the fixing block is matched with the limiting groove, the left wall of the limiting groove extends out of the left side of the test bed body, an electric control table is fixedly connected to the rear side of the test bed body, and a limiting mechanism is arranged on the limiting groove. The limiting mechanism can limit the fixing block, the air blower mechanism is arranged on the test bed body, in this way, the fan can be connected with the test bed body without bolts, then the mounting and dismounting efficiency of the fan is improved, and the preparation and ending time of an experiment is shortened.

Description

Technical Field

[0001] The utility model relates to the monitoring or testing of a wind engine, for example, the field of diagnosis technology, and in particular to a wind engine inertia variable simulation experimental device. Background Art

[0002] A direct-drive wind turbine is a generator driven directly by wind, also known as a gearless wind engine. It has many advantages such as high efficiency at low wind speeds, low noise, long life, reduced unit size, and reduced operation and maintenance costs. The simplest and most direct way to achieve primary frequency modulation and inertia support for a wind turbine is to add energy storage. This does not change the normal operating characteristics of the wind turbine, but will increase a lot of investment and transformation work. Through simulation experiments, the technical route for achieving primary frequency modulation and inertia support for wind turbines is explored, and the feasibility of achieving primary frequency modulation and inertia support for wind turbines based on variable pitch and short-term speed changes is studied. In addition, the field test technology and verification method for primary frequency modulation and inertia support for wind turbines are studied.

[0003] When conducting inertial variable simulation experiments on fans, an experimental platform is required. The fan model will be placed on the experimental platform. At the same time, in order to avoid the impact of special circumstances on the fan, it is usually connected to the experimental platform. The most commonly used connection method is bolt connection. However, the fan needs to be installed and disassembled before and after the experiment, which requires the disassembly and assembly of the bolts. Because each device requires several bolts for connection, the disassembly and assembly of the bolts will be slow, which will make the preparation and finishing time before and after the experiment longer. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a fan inertia variable simulation experimental equipment, which has the function of connecting the fan to the experimental platform without bolts, thereby improving the installation and disassembly efficiency of the fan, thereby reducing the time required for the preparation and conclusion of the experiment.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fan inertia variable simulation experiment device, comprising a test bench body, a fan is arranged on the upper side of the test bench body, a support rod is fixedly connected to the lower side of the outer surface of the fan, and a fixed block is fixedly connected to the lower end of the support rod;

[0008] A limit groove is provided on the upper side of the test bench body, the limit groove is convex in shape, and the support rod extends into the interior of the limit groove;

[0009] The fixing block is matched with the limiting groove, and the left wall of the limiting groove extends out of the left side of the test bench body;

[0010] The rear side of the test bench body is fixedly connected with an electric control console, which can control the test bench body and display the test data;

[0011] A limiting mechanism is provided on the limiting groove, and the limiting mechanism can limit the fixed block;

[0012] The test bench body is provided with a blower mechanism, which can store the blower and assist in the work;

[0013] The limiting mechanism comprises a sliding groove, a clamping block, a spring, a control groove and a control rod.

[0014] Preferably, the sliding groove is formed on the bottom wall of the limiting groove, and the clamping block is slidably connected inside the sliding groove;

[0015] The upper side of the clamping block extends into the interior of the limiting groove, the left side of the clamping block is provided with an inclined surface, and the spring is fixedly connected to the lower side of the clamping block.

[0016] Preferably, the lower end of the spring is fixedly connected to the bottom wall of the sliding groove, and the control groove is opened on the front side of the test bench body;

[0017] The control groove is communicated with the interior of the sliding groove, the control rod is fixedly connected to the front side of the clamping block, and the front side of the control rod extends out of the test bench body.

[0018] Preferably, a blower slot is provided on the upper side of the test bench body, and the blower mechanism comprises a blower, and the blower is arranged inside the blower slot;

[0019] A connecting block is fixedly connected to the rear side of the hair dryer, and a first rotating shaft is fixedly connected to the rear side of the connecting block.

[0020] Preferably, the left and right ends of the first rotating shaft are rotatably connected to the left and right walls of the hair dryer slot, and a first stop cover is provided on the hair dryer slot;

[0021] The first blocking cover is arranged on the upper side of the hair dryer, and a second rotating shaft is rotatably connected between the first blocking cover and the hair dryer slot.

[0022] Preferably, the first stop cover and the hair dryer slot are rotatably connected via a second rotating shaft, a handle is fixedly connected to the upper side of the first stop cover, and a second stop cover is arranged at the rear side of the first stop cover;

[0023] A third rotating shaft is rotatably connected between the first stop cover and the second stop cover, and the first stop cover and the second stop cover are rotatably connected via the third rotating shaft.

[0024] (III) Beneficial effects

[0025] Compared with the prior art, the utility model provides a fan inertia variable simulation experiment device, which has the following beneficial effects:

[0026] (1) The fan inertia variable simulation experimental equipment, when installing the fan, first align the fixed block and the support rod with the left side of the limit slot, and then move it to the right side, the fixed block will contact the inclined surface of the clamping block, and then the clamping block will be squeezed to move to the inside of the sliding slot, the fixed block will stop after moving to the right side of the clamping block, and then the spring will start to reset from the compressed state, pushing the clamping block to reset, and the clamping block after reset will limit the fixed block. When removing the fan, you only need to press the control lever downward, and then you can drive the clamping block to move to the inside of the sliding slot, and then release the clamping state, and then move it to the left to take out the fan. In this way, the fan can be connected to the test bench body without bolts, thereby improving the installation and disassembly efficiency of the fan, and reducing the time required for experimental preparation and finishing.

[0027] (2) The blower inertia variable simulation experimental equipment opens the first cover by pulling the handle and takes out the hair dryer. The hair dryer starts to rotate with the first axis as the center, and then the hair dryer moves to the upper side of the hair dryer slot. At this time, the connecting block is inside the hair dryer slot, and then the second cover is pulled. The second cover starts to rotate with the third axis as the center, and then the closing of the first cover will not block the hair dryer. At the same time, after the first cover is closed, it will also play a role in limiting and supporting the hair dryer, thereby preventing the hair dryer from moving during operation. After use, the hair dryer is stored in the hair dryer slot to prevent dust from entering the hair dryer when not in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a fan inertia variable simulation experiment device of the utility model;

[0029] Figure 2 This is a schematic diagram of the connection structure at the limit groove of the utility model;

[0030] Figure 3 This is a schematic diagram of the internal connection structure of the hair dryer slot of the utility model;

[0031] Figure 4 This is a schematic diagram of the connection structure of the hair dryer of the utility model.

[0032] In the figure: 1. test bench body; 2. limit slot; 3. fan; 4. support rod; 5. fixed block; 6. sliding slot; 7. clamping block; 8. spring; 9. control slot; 10. control rod; 11. electric control panel; 12. blower slot; 13. blower; 14. connecting block; 15. first rotating shaft; 16. first blocking cover; 17. second rotating shaft; 18. second blocking cover; 19. third rotating shaft. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figures 1 to 4 The utility model provides a new technical solution: a fan inertia variable simulation experiment device, including a test bench body 1, a fan 3 is arranged on the upper side of the test bench body 1, and the fan 3 is an existing structure, so no more explanation is given. A support rod 4 is fixedly connected to the lower side of the outer surface of the fan 3, and a fixed block 5 is fixedly connected to the lower end of the support rod 4. A limiting groove 2 is provided on the upper side of the test bench body 1, and the limiting groove 2 is convex in shape. The support rod 4 extends into the interior of the limiting groove 2, and the fixed block 5 is adapted to the limiting groove 2. The left wall of the limiting groove 2 extends out of the test bench body 1. On the left side of the test bench body 1, the rear side of the test bench body 1 is fixedly connected with an electric control console 11, which can control the test bench body 1 and display the test data. The electric control console 11 is an existing structure, so no further explanation is given. A limiting mechanism is provided on the limiting groove 2, which can limit the fixed block 5. A hair dryer mechanism is provided on the test bench body 1, which can store and assist the hair dryer. The limiting mechanism includes a sliding groove 6, a clamping block 7, a spring 8, a control groove 9 and a control rod 10.

[0035] Furthermore, the sliding groove 6 is opened on the bottom wall of the limiting groove 2, the clamping block 7 is slidably connected to the inside of the sliding groove 6, the upper side of the clamping block 7 extends into the inside of the limiting groove 2, an inclined surface is provided on the left side of the clamping block 7, the spring 8 is fixedly connected to the lower side of the clamping block 7, the lower end of the spring 8 is fixedly connected to the bottom wall of the sliding groove 6, the control groove 9 is opened on the front side of the test bench body 1, the control groove 9 is connected with the inside of the sliding groove 6, the control rod 10 is fixedly connected to the front side of the clamping block 7, and the front side of the control rod 10 extends out of the test bench body 1.

[0036] Furthermore, a hair dryer slot 12 is provided on the upper side of the test bench body 1, and the hair dryer mechanism includes a hair dryer 13, which is arranged inside the hair dryer slot 12, and a connecting block 14 is fixedly connected to the rear side of the hair dryer 13, and a first rotating shaft 15 is fixedly connected to the rear side of the connecting block 14, and the left and right ends of the first rotating shaft 15 are rotatably connected to the left and right walls of the hair dryer slot 12, and a first blocking cover 16 is provided on the hair dryer slot 12, and the first blocking cover 16 is provided on the upper side of the hair dryer 13, and a second rotating shaft 17 is rotatably connected between the first blocking cover 16 and the hair dryer slot 12, and the first blocking cover 16 and the hair dryer slot 12 are rotatably connected through the second rotating shaft 17, and a handle is fixedly connected to the upper side of the first blocking cover 16, and a second blocking cover 18 is provided on the rear side of the first blocking cover 16, and a third rotating shaft 19 is rotatably connected between the first blocking cover 16 and the second blocking cover 18, and the first blocking cover 16 and the second blocking cover 18 are rotatably connected through the third rotating shaft 19.

[0037] Furthermore, when installing the fan 3, first align the fixing block 5 and the support rod 4 with the left side of the limiting groove 2, and then move it to the right side. The fixing block 5 will contact the inclined surface of the clamping block 7, and then the clamping block 7 will be squeezed to move to the inside of the sliding groove 6. At this time, the spring 8 begins to become compressed, and then the fixing block 5 will continue to move to the right side, and stop after moving to the right side of the clamping block 7. Then the spring 8 begins to reset from the compressed state, pushing the clamping block 7 to reset. After the reset, the clamping block 7 will limit the fixing block 5, and then the fan 3 is installed. Then, pull the handle to open the first stop cover 16, take out the hair dryer 13, and the hair dryer 13 begins to rotate with the first rotating shaft 15 as the center, and then the hair dryer 13 will move to the upper side of the hair dryer slot 12. At this time, the connecting block 14 is inside the hair dryer slot 12, and then the second blocking cover 18 is pulled, and the second blocking cover 18 starts to rotate with the third rotating shaft 19 as the center, and then the closing of the first blocking cover 16 will not block the hair dryer 13. At the same time, after the first blocking cover 16 is closed, it will also play a limiting support role for the hair dryer 13, thereby preventing the hair dryer 13 from moving during operation. When removing the fan 3, you only need to press the control lever 10 downward, and then it can drive the clamping block 7 to move to the inside of the sliding slot 6, and then the clamping state is released, and then the fan 3 can be taken out by moving it to the left. In this way, the fan 3 can be connected to the test bench body 1 without bolts, thereby improving the installation and disassembly efficiency of the fan 3, thereby reducing the preparation and finishing time of the experiment.

[0038] By controlling the machine-side converter and cooperating with the wind turbine blades, the rotational kinetic energy stored in the blades is used to change the output of the wind turbine during system failures, and the frequency control link is introduced into the active control system of the wind turbine. The operation method is to add a proportional differential link so that the wind turbine can respond to changes in the power system frequency. When the power system frequency changes, the rotor speed of the wind turbine can change, absorbing / releasing the rotor rotational kinetic energy and providing support for the grid frequency.

[0039] By combining virtual inertia control and variable pitch control, a certain pitch angle is retained in the initial state so that the wind turbine has some spare power. Through the research and implementation of this project, the efficiency of the primary frequency modulation experiment and the inertia support experiment can be effectively improved, and the reliability of the wind turbine grid connection can be improved. At the same time, safety hazards can be discovered in time, which has good economic benefits for reducing costs and increasing efficiency. After use, the hair dryer 13 is stored in the hair dryer slot 12 to prevent dust from entering the hair dryer 13 when not in use.

[0040] Working principle: when installing the fan 3, first align the fixing block 5 and the support rod 4 with the left side of the limiting groove 2, and then move it to the right side. The fixing block 5 will contact the inclined surface of the clamping block 7, and then the clamping block 7 will be squeezed to move to the inside of the sliding groove 6. At this time, the spring 8 begins to become compressed, and then the fixing block 5 will continue to move to the right side, and stop after moving to the right side of the clamping block 7. Then the spring 8 begins to reset from the compressed state, pushing the clamping block 7 to reset. After the reset, the clamping block 7 will limit the fixing block 5, and then the fan 3 is installed. Then, pull the handle to open the first cover 16, take out the hair dryer 13, and the hair dryer 13 starts to rotate with the first shaft 15 as the The hair dryer 13 is rotated around the third shaft 19, and the hair dryer 13 moves to the upper side of the hair dryer slot 12. At this time, the connecting block 14 is inside the hair dryer slot 12, and then the second blocking cover 18 is pulled, and the second blocking cover 18 starts to rotate with the third rotating shaft 19 as the center of the circle, and then the closing of the first blocking cover 16 will not block the hair dryer 13. At the same time, after the first blocking cover 16 is closed, it will also play a limiting support role for the hair dryer 13, avoiding the movement of the hair dryer 13 during operation. When removing the fan 3, you only need to press the control lever 10 downward, which can drive the clamping block 7 to move to the inside of the sliding slot 6, and then the clamping state is released, and then move it to the left to take out the fan 3.

[0041] By controlling the machine-side converter and cooperating with the wind turbine blades, the rotational kinetic energy stored in the blades is used to change the output of the wind turbine during system failures, and the frequency control link is introduced into the active control system of the wind turbine. The operation method is to add a proportional differential link so that the wind turbine can respond to changes in the power system frequency. When the power system frequency changes, the rotor speed of the wind turbine can change, absorbing / releasing the rotor rotational kinetic energy and providing support for the grid frequency.

[0042] By combining virtual inertia control and variable pitch control, a certain pitch angle is retained in the initial state so that the wind turbine has some spare power. Through the research and implementation of this project, the efficiency of the primary frequency modulation experiment and the inertia support experiment can be effectively improved, and the reliability of the wind turbine grid connection can be improved. At the same time, safety hazards can be discovered in time, which has good economic benefits for reducing costs and increasing efficiency. After use, the hair dryer 13 is stored in the hair dryer slot 12 to prevent dust from entering the hair dryer 13 when not in use.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan inertia variable simulation experiment device, comprising a test bench body (1), a fan (3) is arranged on the upper side of the test bench body (1), a support rod (4) is fixedly connected to the lower side of the outer surface of the fan (3), and a fixing block (5) is fixedly connected to the lower end of the support rod (4); A limiting groove (2) is provided on the upper side of the test bench body (1); the limiting groove (2) is convex in shape, and the support rod (4) extends into the limiting groove (2); The fixing block (5) is matched with the limiting groove (2), and is characterized in that: The left wall of the limiting groove (2) extends out of the left side of the test bench body (1); The rear side of the test bench body (1) is fixedly connected to an electric control console (11), and the electric control console (11) can control the test bench body (1) and display test data; A limiting mechanism is provided on the limiting groove (2), and the limiting mechanism can limit the fixing block (5); The test bench body (1) is provided with a blower mechanism, which can store the blower and assist in work; The limiting mechanism comprises a sliding groove (6), a clamping block (7), a spring (8), a control groove (9) and a control rod (10).

2. The wind turbine inertia variable simulation experimental equipment according to claim 1, characterized in that: The sliding groove (6) is formed on the bottom wall of the limiting groove (2), and the clamping block (7) is slidably connected inside the sliding groove (6); The upper side of the clamping block (7) extends into the interior of the limiting groove (2), the left side of the clamping block (7) is provided with an inclined surface, and the spring (8) is fixedly connected to the lower side of the clamping block (7).

3. The wind turbine inertia variable simulation experimental equipment according to claim 2, characterized in that: The lower end of the spring (8) is fixedly connected to the bottom wall of the sliding groove (6), and the control groove (9) is opened on the front side of the test bench body (1); The control groove (9) is communicated with the interior of the sliding groove (6), the control rod (10) is fixedly connected to the front side of the clamping block (7), and the front side of the control rod (10) extends out of the test bench body (1).

4. The wind turbine inertia variable simulation experimental equipment according to claim 1, characterized in that: A blower groove (12) is provided on the upper side of the test bench body (1), and the blower mechanism comprises a blower (13), and the blower (13) is arranged inside the blower groove (12); A connection block (14) is fixedly connected to the rear side of the hair dryer (13), and a first rotating shaft (15) is fixedly connected to the rear side of the connection block (14).

5. The wind turbine inertia variable simulation experimental equipment according to claim 4, characterized in that: The left and right ends of the first rotating shaft (15) are rotatably connected to the left and right walls of the hair dryer slot (12), and a first blocking cover (16) is provided on the hair dryer slot (12); The first blocking cover (16) is arranged on the upper side of the hair dryer (13), and a second rotating shaft (17) is rotatably connected between the first blocking cover (16) and the hair dryer slot (12).

6. The wind turbine inertia variable simulation experimental equipment according to claim 5, characterized in that: The first blocking cover (16) and the hair dryer slot (12) are rotatably connected via a second rotating shaft (17); a handle is fixedly connected to the upper side of the first blocking cover (16); and a second blocking cover (18) is arranged on the rear side of the first blocking cover (16); A third rotating shaft (19) is rotatably connected between the first blocking cover (16) and the second blocking cover (18); the first blocking cover (16) and the second blocking cover (18) are rotatably connected via the third rotating shaft (19).

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