A wind turbine pitch training platform

Abstract

The invention discloses a wind turbine pitch-changing training platform, which is characterized in that a fixed plate, a driving device, a transmission device and a motion mechanism are arranged in a frame, the driving device is fixedly connected to the fixed plate, the transmission device is connected to the driving device, the motion mechanism is connected to the transmission device, the motion mechanism comprises: a pointer, a lead screw, a lead screw nut, a sliding rod and a sliding block, the lead screw is vertically connected to the fixed plate, the lead screw nut is spirally connected to the lead screw, the pointer is fixedly connected to the lead screw nut, a scale ruler is arranged on one side of the pointer, the scale ruler is arranged in parallel with the lead screw, the sliding rod is arranged in parallel with the lead screw, the sliding block is slidably connected to the sliding rod, and the pointer is fixedly connected to the sliding block. The invention has the following beneficial effects: since the sliding rod and the lead screw are arranged in parallel, when the lead screw rotates, the lead screw nut is driven to move along the axis direction of the lead screw, thereby driving the pointer to move along the axis of the lead screw, and the angle of the pitch-changing is reflected on the scale ruler indicated by the pointer, so as to meet the needs of indoor teaching.

Description

Technical Field

[0001] The invention relates to the field of wind turbine pitch control training, and in particular to a wind turbine pitch control training platform. Background Art

[0002] As one of the core parts of the control system of large wind turbines, the variable pitch system plays a very important role in the safe, stable and efficient operation of the unit. By adjusting the pitch angle of the blades, the angle of attack of the airflow on the blades is changed, thereby controlling the aerodynamic torque and aerodynamic power captured by the wind rotor.

[0003] Due to the large overall size of the wind turbine, the rotor diameter is about 80 meters, the installation height is high, and the tower height is also about 80 meters, it is impossible to directly install the entire wind turbine in a school or factory. This greatly limits the teaching of the variable pitch system in schools. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a wind turbine pitch control training platform.

[0005] In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problem is:

[0006] A wind turbine pitch training platform comprises a frame and an electrical box, wherein the electrical box is connected to the frame, and is characterized in that a fixed plate, a driving device, a transmission device and a motion mechanism are arranged in the frame, the driving device is fixedly connected to the fixed plate, the transmission device is connected to the driving device, the motion mechanism is connected to the transmission device, the motion mechanism comprises: a pointer, a lead screw, a lead screw nut, a sliding rod and a sliding block, the lead screw is vertically connected to the fixed plate, the lead screw nut is spirally connected to the lead screw, the pointer is fixedly connected to the lead screw nut, a scale is arranged on one side of the pointer, the scale is arranged parallel to the lead screw, the sliding rod is arranged parallel to the lead screw, the sliding block is slidably connected to the sliding rod, and the pointer is fixedly connected to the sliding block.

[0007] The beneficial effect of adopting the above technical scheme is: by setting a driving device, a transmission device and a motion mechanism, the motion mechanism includes: a pointer, a screw, a screw nut, a sliding rod and a sliding block, the screw is vertically connected to the fixed plate, the screw nut is spirally connected to the screw, the pointer is fixedly connected to the screw nut, a scale is provided on one side of the pointer, the scale is parallel to the screw, the sliding rod is parallel to the screw, the sliding block is slidingly connected to the sliding rod, the pointer is fixedly connected to the sliding block, the driving device and the transmission device drive the screw to rotate, because the sliding rod and the screw are parallel, when the screw rotates, the screw nut is driven to move along the axis direction of the screw, thereby driving the pointer to move along the axis of the screw, and the angle of the variable pitch is reflected on the scale indicated by the pointer, so as to meet the needs of indoor teaching.

[0008] Furthermore, the transmission device includes: a driving pulley, a driven pulley and an adjusting wheel seat, the driving pulley is connected to the driving device, the driven pulley is connected to the screw, the driving pulley and the driven pulley are connected by a belt, and the adjusting wheel seat is arranged in the inner ring of the belt.

[0009] The beneficial effect of adopting the above technical solution is: the transmission device is set as a pulley transmission, and the tightness of the belt is adjusted by adjusting the wheel seat, so that the transmission is smoother.

[0010] Furthermore, the transmission device includes: a driving external gear, a driven external gear and an internal gear, the driving external gear is connected to the driving device, the driven external gear is connected to the lead screw, the driving external gear is meshed with the internal gear, and the driven external gear is meshed with the internal gear.

[0011] The beneficial effect of adopting the above technical solution is that the pitch change process is simulated through the meshing of the internal and external gears, making the teaching more intuitive.

[0012] Furthermore, a connecting shaft is provided on the outer side of the frame.

[0013] The beneficial effect of adopting the above technical solution is that by setting a connecting shaft, multiple platforms can be spliced ​​together to achieve teaching of overall variable pitch of wind turbines such as 3-blade and 4-blade.

[0014] Furthermore, the pointer includes a first extending end, a second extending end and a tip, the interface of the second extending end is L-shaped, the plane where the second extending end is located is perpendicular to the first extending end, and a travel switch is provided on the fixed block.

[0015] The beneficial effect of adopting the above technical solution is: the extreme position in the pitch changing process is simulated by the first extended end touching the travel switch.

[0016] Furthermore, a storage box is provided under the rack.

[0017] The beneficial effect of adopting the above technical solution is that maintenance tools can be placed by setting up a storage rack.

[0018] Furthermore, infrared sensors are installed at both ends of the scale.

[0019] The beneficial effect of adopting the above technical solution is that the 0° and 90° positions during the pitch change process are sensed by infrared sensors, which makes teaching easier and more intuitive.

[0020] Furthermore, a discharge resistor box for releasing the residual power of the platform after training or power failure is provided in the storage box, and the discharge resistor box includes a door panel, a box body, a first resistor, a second resistor, a first clip, a second clip, a resistor locking block and a voltmeter. The door panel is rotatably connected to the box body, the cross-sections of the first clip and the second clip are X-shaped, one end of the first clip and the second clip is provided with saw teeth, one end of the first clip is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, and the other end of the second resistor is connected to one end of the second clip, the first resistor and the second resistor are connected in series and then connected in parallel with the voltmeter, the first clip is detachably connected to the box body, the second clip is detachably connected to the box body, and the first resistor and the second resistor are fixedly connected to the resistor locking block.

[0021] The beneficial effect of adopting the above technical solution is: since the voltage used in the pitch control system of the wind turbine is relatively high during the teaching of the pitch control system, when the circuit of the control system is turned off or there is a sudden power outage, a large amount of electricity will still remain in the circuit. If the operator touches the circuit at this time, electric shock will occur, and there is a certain degree of safety hazard, causing personal injury. By setting the first resistor and the second resistor, when in use, the first clip and the second clip are clamped in the circuit after the power is cut off. The sawtooth can make the first clip and the second clip clamp more firmly. The current flows through the first resistor and the second resistor. The first resistor and the second resistor are equivalent to energy-consuming elements, which consume the excess electricity. The voltmeter displays the current voltage value. When the voltmeter reads 0, the discharge of electricity is completed. At this time, it is a safe state, ensuring the safety of the operator during the teaching process.

[0022] Furthermore, a notch is provided on one side of the box body, the first clip or the second clip is inserted into the notch, two groups of steel balls and springs are symmetrically arranged in the notch, one end of the spring is connected to the steel ball, and the other end of the spring is connected to the box body, a magnet is provided inside the steel ball, and the inner side of the notch is coated with insulating material.

[0023] The beneficial effect of adopting the above technical solution is: through two groups of steel balls and springs, the steel balls and the spring will generate a squeezing force on the middle part of the first clip or the second clip, so that the first clip or the second clip can be placed in the notch on the box body. It is more secure and not easy to fall off. By setting a magnet, a magnetic force can be generated on the first clip or the second clip to adsorb the first clip or the second clip, and the insulating material prevents the first clip or the second clip from transmitting electricity to the box body.

[0024] Furthermore, the resistor locking block is welded to the box body, a handle is provided on the top of the box body, the handle is arched, and also includes an emergency stop button, the emergency stop button is connected in parallel with the voltmeter, and a fuse is provided at one end of the first resistor and the second resistor.

[0025] The beneficial effects of adopting the above technical solution are: the welding connection can ensure that the first resistor and the second resistor are more firmly fixed on the box and are not easy to fall off. The handle facilitates the movement of the box and is easy to carry. By setting an emergency stop button, emergency braking can be guaranteed in emergencies. The fuse can prevent damage to the resistor and the instrument caused by excessive residual power. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the axonometric diagram of the present invention.

[0028] Figure 2 It is one of the structural schematic diagrams of the transmission structure of the present invention.

[0029] Figure 3 It is a structural schematic diagram of the front view of the present invention.

[0030] Figure 4 It is a schematic diagram of the structure of the pointer of the present invention.

[0031] Figure 5 This is the second structural schematic diagram of the transmission structure of the present invention.

[0032] Figure 6 It is a schematic diagram of the structure of the combination used in the present invention.

[0033] Figure 7 It is a structural schematic diagram of the discharge resistor box of the present invention.

[0034] Figure 8It is a circuit principle diagram of the discharge resistor box of the present invention.

[0035] Fig. 9 It is a structural schematic diagram of the placement of the second clip and the box body in the discharge resistor box of the present invention.

[0036] The numbers and letters in the figure represent the names of the corresponding parts:

[0037] 1-electrical box; 2-frame; 21-connecting shaft; 22-fixed plate; 23-motor; 24-storage box; 25-scale scale; 26-screw; 27-screw nut; 28-sliding block; 29-sliding rod; 30-pointer; 301-first extension end; 302-second extension end; 303-tip; 31-driven pulley; 32-driving pulley; 33-adjusting wheel seat; 331-adjusting hole; 41-driven external gear; 42-driving external gear; 43-internal gear; 101-door panel; 102-box; 103-voltmeter; 104-handle; 105-second resistor; 106-resistance locking block; 107-first clip; 108-second clip; 109-first resistor; 1011-steel ball; 1012-spring, 1013-notch. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below in conjunction with specific embodiments:

[0039] In order to achieve the purpose of the present invention, as shown in the figure, one embodiment of the present invention is: a wind turbine pitch training platform, including a frame 2 and an electrical box 1, the electrical box 1 is connected to the frame 2, and a fixed plate 22, a driving device, a transmission device and a motion mechanism are provided in the frame 2, the driving device is fixedly connected to the fixed plate 22, the driving device is a motor, the transmission device is connected to the driving device, and the motion mechanism is connected to the transmission device. The motion mechanism includes: a pointer 30, a screw 26, a screw nut 27, a slide bar 29 and a sliding block 28, the screw 26 is vertically connected to the fixed plate 22, the screw nut 27 is spirally connected to the screw 26, the pointer 30 is fixedly connected to the screw nut 27, a scale ruler 25 is provided on one side of the pointer 30, the scale ruler 25 is arranged parallel to the screw 26, the slide bar 29 is arranged parallel to the screw 26, the sliding block 28 is slidably connected to the slide bar 29, and the pointer 30 is fixedly connected to the sliding block 28.

[0040] The beneficial effect of adopting the above technical scheme is: by setting a driving device, a transmission device and a motion mechanism, the motion mechanism includes: a pointer, a screw, a screw nut, a sliding rod and a sliding block, the screw is vertically connected to the fixed plate, the screw nut is spirally connected to the screw, the pointer is fixedly connected to the screw nut, a scale is provided on one side of the pointer, the scale is parallel to the screw, the sliding rod is parallel to the screw, the sliding block is slidingly connected to the sliding rod, the pointer is fixedly connected to the sliding block, the driving device and the transmission device drive the screw to rotate, because the sliding rod and the screw are parallel, when the screw rotates, it drives the screw nut to move along the axis of the screw, thereby driving the pointer to move along the axis of the screw, and the angle of the variable pitch is reflected on the scale indicated by the pointer, so as to meet the needs of indoor teaching.

[0041] Another embodiment of the present invention is that the transmission device includes: a driving pulley 32, a driven pulley 31 and an adjusting wheel seat 33, the driving pulley 32 is connected to the driving device, the driven pulley 31 is connected to the screw 26, the driving pulley 32 and the driven pulley 31 are connected by a belt, the adjusting wheel seat 33 is arranged in the inner ring of the belt, and an adjustment hole 331 is provided on the adjusting seat.

[0042] The beneficial effect of adopting the above technical solution is: the transmission device is set as a pulley transmission, and the tightness of the belt is adjusted by adjusting the wheel seat, so that the transmission is smoother.

[0043] Another embodiment of the present invention is that the transmission device includes: a driving external gear 42, a driven external gear 41 and an internal gear 43, the driving external gear 42 is connected to the driving device, the driven external gear 41 is connected to the lead screw 26, the driving external gear 42 is meshed with the internal gear 43, and the driven external gear 41 is meshed with the internal gear 43.

[0044] The beneficial effect of adopting the above technical solution is that the pitch change process is simulated through the meshing of the internal and external gears, making the teaching more intuitive.

[0045] Another embodiment of the present invention is that a connecting shaft 21 is provided on the outer side of the frame 2 .

[0046] The beneficial effect of adopting the above technical solution is that by setting a connecting shaft, multiple platforms can be spliced ​​together to achieve teaching of overall variable pitch of wind turbines such as 3-blade and 4-blade.

[0047] Another embodiment of the present invention is that the pointer 30 includes a first extension end 301, a second extension end 302 and a tip 303, the interface of the second extension end 302 is L-shaped, the plane where the second extension end 302 is located is perpendicular to the first extension end 301, and a travel switch is provided on the fixed block 22.

[0048] The beneficial effect of adopting the above technical solution is: the extreme position in the pitch changing process is simulated by the first extended end touching the travel switch.

[0049] Another embodiment of the present invention is that a storage box 24 is further provided under the frame 2 .

[0050] The beneficial effect of adopting the above technical solution is that maintenance tools can be placed by setting up a storage rack.

[0051] Another embodiment of the present invention is that infrared sensors are installed at both ends of the scale 25 .

[0052] The beneficial effect of adopting the above technical solution is that the 0° and 90° positions during the pitch change process are sensed by infrared sensors, which makes teaching easier and more intuitive.

[0053] Another embodiment of the present invention is that a discharge resistor box for releasing the residual power of the platform after training or power failure is provided in the storage box, and the discharge resistor box includes a door panel 101, a box body 102, a first resistor 109, a second resistor 105, a first clip 107, a second clip 108, a resistor locking block 106 and a voltmeter 103, the door panel 101 is rotatably connected to the box body 102, the cross-section of the first clip 107 and the second clip 108 is X-shaped, and one end of the first clip 107 and the second clip 108 is provided with a sawtooth One end of the first clip 107 is connected to one end of the first resistor 109, the other end of the first resistor 109 is connected to one end of the second resistor 105, the other end of the second resistor 105 is connected to one end of the second clip 108, the first resistor 109 and the second resistor 105 are connected in series and then connected in parallel with the voltmeter 103, the first clip 107 is detachably connected to the box 102, the second clip 108 is detachably connected to the box 102, and the first resistor 109 and the second resistor 105 are fixedly connected to the resistor locking block 106.

[0054] The beneficial effect of adopting the above technical solution is: since the voltage used in the pitch control system of the wind turbine is relatively high during the teaching of the pitch control system, when the circuit of the control system is turned off or there is a sudden power outage, a large amount of electricity will still remain in the circuit. If the operator touches the circuit at this time, electric shock will occur, and there is a certain degree of safety hazard, causing personal injury. By setting the first resistor and the second resistor, when in use, the first clip and the second clip are clamped in the circuit after the power is cut off. The sawtooth can make the first clip and the second clip clamp more firmly. The current flows through the first resistor and the second resistor. The first resistor and the second resistor are equivalent to energy-consuming elements, which consume the excess electricity. The voltmeter displays the current voltage value. When the voltmeter reads 0, the discharge of electricity is completed. At this time, it is a safe state, ensuring the safety of the operator during the teaching process.

[0055] Another embodiment of the present invention is that a notch is provided on one side of the box body 102, and the first clip 107 or the second clip 108 is inserted into the notch. Two groups of steel balls 1011 and springs 1012 are symmetrically arranged in the notch, one end of the spring 1012 is connected to the steel ball 1011, and the other end of the spring 1012 is connected to the box body 102. A magnet is provided inside the steel ball 1011, and the inner side of the notch is coated with insulating material.

[0056] The beneficial effect of adopting the above technical solution is: through two groups of steel balls and springs, the steel balls and the spring will generate a squeezing force on the middle part of the first clip or the second clip, so that the first clip or the second clip can be placed in the notch on the box body. It is more secure and not easy to fall off. By setting a magnet, a magnetic force can be generated on the first clip or the second clip to adsorb the first clip or the second clip, and the insulating material prevents the first clip or the second clip from transmitting electricity to the box body.

[0057] Another embodiment of the present invention is that the resistor locking block 106 is welded to the box body 102, a handle 104 is provided above the box body 102, the handle 104 is arched, and also includes an emergency stop button, the emergency stop button is connected in parallel with the voltmeter 103, and a fuse is provided at one end of the first resistor 109 and the second resistor 105.

[0058] The beneficial effects of adopting the above technical solution are: the welding connection can ensure that the first resistor and the second resistor are more firmly fixed on the box and are not easy to fall off. The handle facilitates the movement of the box and is easy to carry. By setting an emergency stop button, emergency braking can be guaranteed in emergencies. The fuse can prevent damage to the resistor and the instrument caused by excessive residual power.

[0059] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine pitch training platform, comprising a frame and an electrical box, wherein the electrical box is connected to the frame, and characterized in that: A fixed plate, a driving device, a transmission device and a motion mechanism are provided in the frame, the driving device is fixedly connected to the fixed plate, the transmission device is connected to the driving device, the motion mechanism is connected to the transmission device, the motion mechanism includes: a pointer, a lead screw, a lead screw nut, a sliding rod and a sliding block, the lead screw is vertically connected to the fixed plate, the lead screw nut is spirally connected to the lead screw, the pointer is fixedly connected to the lead screw nut, a scale is provided on one side of the pointer, the scale is arranged parallel to the lead screw, the sliding rod is arranged parallel to the lead screw, the sliding block is slidably connected to the sliding rod, and the pointer is fixedly connected to the sliding block.

2. A wind turbine pitch control training platform according to claim 1, characterized in that: The transmission device comprises: a driving pulley, a driven pulley and an adjusting wheel seat, the driving pulley is connected to the driving device, the driven pulley is connected to the lead screw, the driving pulley and the driven pulley are connected via a belt, and the adjusting wheel seat is arranged in the inner ring of the belt.

3. A wind turbine pitch control training platform according to claim 1, characterized in that: The transmission device comprises: a driving external gear, a driven external gear and an internal gear, the driving external gear is connected to the driving device, the driven external gear is connected to the lead screw, the driving external gear is meshed with the internal gear, and the driven external gear is meshed with the internal gear.

4. A wind turbine pitch control training platform according to claim 2 or 3, characterized in that: A connecting shaft is arranged on the outer side of the frame.

5. A wind turbine pitch control training platform according to claim 4, characterized in that: The pointer includes a first extending end, a second extending end and a tip, the interface of the second extending end is L-shaped, the plane where the second extending end is located is perpendicular to the first extending end, and a travel switch is provided on the fixing plate.

6. A wind turbine pitch control training platform according to claim 5, characterized in that: A storage box is also provided under the rack.

7. A wind turbine pitch control training platform according to claim 6, characterized in that: Infrared sensors are installed at both ends of the scale.

8. A wind turbine pitch control training platform according to claim 6, characterized in that: A discharge resistor box for releasing the residual power of the platform after training or power failure is provided in the storage box, and the discharge resistor box includes a door panel, a box body, a first resistor, a second resistor, a first clip, a second clip, a resistor locking block and a voltmeter. The door panel is rotatably connected to the box body, the cross-sections of the first clip and the second clip are X-shaped, one end of the first clip and the second clip is provided with saw teeth, one end of the first clip is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, and the other end of the second resistor is connected to one end of the second clip, the first resistor and the second resistor are connected in series and then connected in parallel with the voltmeter, the first clip is detachably connected to the box body, the second clip is detachably connected to the box body, and the first resistor and the second resistor are fixedly connected to the resistor locking block.

9. A wind turbine pitch control training platform according to claim 8, characterized in that: A notch is provided on one side of the box body, and the first clip or the second clip is inserted into the notch. Two groups of steel balls and springs are symmetrically arranged in the notch, one end of the spring is connected to the steel ball, and the other end of the spring is connected to the box body. A magnet is provided inside the steel ball, and the inner side of the notch is coated with insulating material.

10. A wind turbine pitch control training platform according to claim 9, characterized in that: The resistor locking block is welded to the box body, a handle is provided on the top of the box body, the handle is arched, and also includes an emergency stop button, the emergency stop button is connected in parallel with the voltmeter, and a fuse is provided at one end of the first resistor and the second resistor.

Images