An anti-collision automatic control system for monitoring the hoisting of hydro-generator rotors

Abstract

The present invention discloses an anti-touch automatic control system for monitoring the hoisting of a hydro-generator rotor, comprising a fixed operating component and an automatic control component. The fixed operating component has multiple groups, and the number of the fixed operating components is equal to the number of magnetic poles of the hydro-generator rotor. The fixed operating component comprises a fixing device and a moving device. The fixing devices are respectively mounted on the magnetic pole wind shield plates on the upper surface of the hydro-generator rotor, and the moving devices are respectively mounted on the corresponding fixing devices. The automatic control component connects the fixed operating components. The system controls the up and down movement of the pull-up slats of the moving device to monitor the installation gap between the rotor and the stator during the hoisting process to ensure safety. Whether a jam occurs is determined by the state of the signal indicator light, and the hoisting personnel are promptly instructed to stop the operation. The setting of the anti-touch automatic control system reduces the input of manpower and material resources, further improves work efficiency, ensures maintenance quality, and ensures personnel safety.

Description

Technical Field

[0001] The present invention relates to the technical field of hydro-generator rotor hoisting, and in particular to an anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor. Background Art

[0002] A hydroelectric generator is a generator that uses a turbine as the prime mover to convert water energy into electrical energy. When water flows through the turbine, the water energy is converted into mechanical energy. The turbine's rotating shaft drives the generator's rotor, converting mechanical energy into electrical energy for output. It is the main power equipment for hydropower stations to produce electricity.

[0003] During the operation of the hydro-turbine generator, regular maintenance is required. As the core equipment of the hydro-power station, the hydro-turbine generator runs under high load for a long time and is prone to various problems, such as mechanical failure, electrical failure, etc. If these problems are not discovered and solved in time, it will affect the normal operation of the equipment and even cause damage to the equipment, affecting the stable supply of electricity. Therefore, regular maintenance work should be carried out to update and transform the equipment, eliminate defects in the operation of the equipment, solve potential problems, etc., to prevent the expansion of problems, ensure the normal operation of the equipment, improve the safety and reliability of the operation of the power generation equipment, and ensure the safe and reliable operation of the power grid; at the same time, timely maintenance can better protect the equipment and extend its service life on the one hand, and ensure the overall safety of the equipment on the other hand, avoid the occurrence of power accidents, and ensure the safety of the power system.

[0004] During the maintenance process of a hydro-turbine generator set, when the rotor is hoisted, in order to prevent the stator and rotor from colliding, a dedicated person needs to enter the pit, with one person stationed at every other magnetic pole. This person can simultaneously observe the conditions of the left and right magnetic poles to ensure that all magnetic pole positions are taken into account. At this time, a pull strip is placed on the gap between the rotor and the stator (the designed gap is about 22mm), and the pull strip is continuously pulled up and down to monitor whether there is enough gap between the rotor and the stator during the hoisting process to ensure the safety of the hoisting process.

[0005] During the actual maintenance and hoisting process, the rotor used in a hydropower plant has a total weight of about 600 tons, a diameter of 8 meters, a height of 1.8 meters, and is equipped with 40 magnetic poles. Therefore, each time the rotor is hoisted, 20 people need to enter the pit to pull the slats to ensure that the rotor can be accurately hoisted into the stator pit. During the hoisting process, the operator needs to pull the slats up and down continuously. When a jam occurs, it is necessary to shout loudly to send a jam signal. After receiving the signal, the lifting commander instructs the crane to stop lifting and adjust the rotor position until the gap is large enough that all the slats can be pulled up and down freely before continuing the lifting operation.

[0006] In this maintenance and hoisting work, the use of the above-mentioned traditional maintenance method requires a lot of manpower and material resources, and is inefficient. At the same time, signal transmission during the hoisting process relies on manual labor, and there are problems such as signal reception deviation and untimely reception. After the rotor is hoisted out of the pit, there is a risk of falling from a high altitude when the staff evacuate, which poses certain safety hazards. Summary of the Invention

[0007] In order to overcome the above problems, the purpose of the present invention is to provide an anti-touch automatic control system for monitoring the hoisting of the hydro-generator rotor. The automatic control system is fixedly installed on the magnetic pole wind shield on the upper surface of the hydro-generator rotor through a fixing device to provide supporting force. The moving device is installed on the fixing device, and the automatic control component is connected to the motor of the moving device. The automatic control component controls the up and down movement of the pull-up slats of the moving device to monitor the installation gap between the rotor and the stator during the hoisting process to ensure safety. The lighting and extinguishing status of the signal indicator light is used to determine whether a jam occurs, and the lifting personnel are promptly instructed to stop the operation. The setting of the anti-touch automatic control system reduces the investment of manpower and material resources, further improves work efficiency, ensures maintenance quality, and ensures personnel safety.

[0008] The technical solution adopted in the present invention is:

[0009] An anti-touch automatic control system for monitoring the hoisting of a hydro-generator rotor comprises a fixed operating assembly and an automatic control assembly. The fixed operating assembly comprises multiple groups, the number of which is equal to the number of magnetic poles of the hydro-generator rotor. The fixed operating assembly comprises a fixing device and a moving device. The fixing devices are respectively mounted on the magnetic pole windshield plates on the upper surface of the hydro-generator rotor. The moving devices are respectively mounted on the corresponding fixing devices. The automatic control assembly is connected to each fixed operating assembly.

[0010] The fixing device includes a C-shaped clamp, a fixed back plate, and a guide sleeve. The C-shaped clamp is a short lower and long upper structure and is fixedly mounted on the magnetic pole windshield plate on the upper surface of the hydro-generator rotor. The fixed back plate is connected to the C-shaped clamp by nuts and bolts and is located on the upper surface of the C-shaped clamp. A mounting hole is provided above the fixed back plate. The guide sleeve is installed below the fixed back plate and is located on the right side. A through hole is provided in the middle of the guide sleeve.

[0011] The driving mechanism is a chain which has a first end in contact with the second end of the driving mechanism, and a second end in contact with the first gear of the driving mechanism. The driving mechanism is mounted on a right side of the driving mechanism, and the transmission gear is mounted on a right side of the driving mechanism.

[0012] The automatic control component is installed in a control box, and includes a power supply, a main switch, a transmission, a signal indicator light, and an overcurrent relay. There are multiple groups of signal indicator lights and overcurrent relays. The motors in each moving device of the fixed operating component are connected to the corresponding signal indicator lights through wires. The motors, signal indicator lights, and overcurrent relays are connected in series to form a gap monitoring system. Each group of gap monitoring systems is connected in parallel between the transmission and the power supply and the main switch.

[0013] As a further description of the present invention, the motor output shaft and the rotating handle of the motion device are connected through a rotating mechanism with adjustable torque. The rotating mechanism with adjustable torque includes an adjusting connecting sleeve, a positioning nut, a friction plate, a pressure plate, and a spring. The adjusting connecting sleeve is installed on the output shaft of the motor. The adjusting connecting sleeve has a T-shaped structure. The positioning nut, spring, pressure plate, and friction plate are sequentially inserted into the outside of the adjusting connecting sleeve. The rotating handle is connected between the pressure plate and the right end of the adjusting connecting sleeve. There are two friction plates, one of which is located between the pressure plate and the rotating handle, and the other is located between the end face of the adjusting connecting sleeve and the rotating handle. The spring is connected between the positioning nut and the pressure plate.

[0014] As a further description of the present invention, the torque-adjustable rotary mechanism further includes a stop screw, a fifth mounting hole is provided on the left side of the adjustment connecting sleeve, and the stop screw is installed in the fifth mounting hole.

[0015] As a further description of the present invention, the spring buffer mechanism includes a hook, a buffer mechanism body, a plug, a compression spring, a stopper, and a nut. A buffer groove is opened at the upper end of the buffer mechanism body. One end of the hook is connected to the fourth connecting hole at the lower end of the sliding shaft, and the other end is located in the buffer groove. The stopper is located at the bottom position in the buffer groove. The fixed end of the compression spring is fixed to the side of the stopper close to the bottom of the buffer groove by a nut. The plug is installed at the top of the buffer groove. The other end of the compression spring is fixedly connected to the bottom end of the hook.

[0016] As a further description of the present invention, the number of the signal indicator lights and the overcurrent relays is equal to the number of magnetic poles of the hydro-generator rotor.

[0017] As a further description of the present invention, the automatic control assembly further includes a remote control circuit breaker connected between the main switch and the transmission.

[0018] As a further description of the present invention, the power supply is a mobile low-voltage DC power supply, and the motor is a low-speed DC motor.

[0019] As a further description of the present invention, the hanging rope is an elastic hanging rope.

[0020] As a further description of the present invention, the first rotating shaft and the second rotating shaft are shown to be connected to the connecting rod and then sealed using a gasket and a rotating shaft retaining ring.

[0021] As a further description of the present invention, the C-clamp is fixed to the pole windshield on the upper surface of the hydro-generator rotor by countersunk screws.

[0022] Beneficial effects of the present invention:

[0023] The present invention provides an anti-touch automatic control system for monitoring the hoisting of a hydro-generator rotor, comprising a fixed operating component and an automatic control component. The fixed operating component has multiple groups, and the number of fixed operating components is equal to the number of magnetic poles of the hydro-generator rotor. The fixed operating component comprises a fixing device and a moving device. The automatic control system is fixedly mounted on the magnetic pole wind shield plate on the upper surface of the hydro-generator rotor through the fixing device to provide supporting force. The moving device is mounted on the fixing device. The automatic control component is connected to the motor of the moving device, and the up and down movement of the pull-up slats of the moving device is controlled by the automatic control component to monitor the installation gap between the rotor and the stator during the hoisting process of the rotor, replacing manual maintenance work, reducing operation risks, ensuring operation safety, judging whether a jam occurs by the lighting and extinguishing status of the signal indicator light, and promptly directing the hoisting personnel to stop the operation. The setting of the anti-touch automatic control system reduces the input of manpower and material resources, promptly discovers jamming phenomena, further improves work efficiency, ensures maintenance quality, and ensures personnel safety.

[0024] The present invention provides an anti-touch automatic control system for monitoring the hoisting of a hydro-generator rotor. The automatic control component also includes a remote control circuit breaker, which is connected between a main switch and a transmission. By using the remote control circuit breaker, an operator can start and stop the automatic control system while standing on the ground, thereby ensuring operational safety during the hoisting process.

[0025] The present invention provides an anti-touch automatic control system for monitoring the hoisting of a hydro-generator rotor. The motor output shaft of the motion device and the rotating handle are connected by a rotary mechanism with adjustable torque. The rotary mechanism includes an adjustment sleeve, a positioning nut, a friction plate, a pressure plate, and a spring. The positioning nut is used to adjust the clamping force between the friction plate and the rotating handle so that the rotary mechanism outputs torque, thereby adjusting the pumping force applied to the pull strip, thereby ensuring the stability of the operation of the anti-touch automatic control system.

[0026] The present invention provides an anti-touch automatic control system for monitoring the hoisting of a hydro-generator rotor. A spring buffer mechanism is used to connect the pull strips and the sliding shaft of the motion device, which provides a certain buffer force when the pull strips get stuck, effectively preventing the entire motion device from tipping over and ensuring safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front view of one set of fixed operating components in an anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor proposed by the present invention;

[0028] Figure 2 The present invention proposes an anti-touch automatic control system for monitoring the hoisting of the turbine generator rotor Figure 1 Middle AA section view;

[0029] Figure 3 The present invention proposes an anti-touch automatic control system for monitoring the hoisting of the turbine generator rotor Figure 1 The upper part is an enlarged schematic diagram;

[0030] Figure 4 The present invention proposes an anti-touch automatic control system for monitoring the hoisting of the turbine generator rotor Figure 2 The upper part is an enlarged schematic diagram;

[0031] Figure 5 The present invention proposes an anti-touch automatic control system for monitoring the hoisting of the turbine generator rotor Figure 2 A partial enlarged schematic diagram of point I in the middle;

[0032] Figure 6 The present invention proposes an anti-touch automatic control system for monitoring the hoisting of the turbine generator rotor Figure 1 Middle BB cross-section;

[0033] Figure 7 This is a control circuit connection diagram of the automatic control components of an anti-touch automatic control system for monitoring the hoisting of a hydro-generator rotor proposed by the present invention;

[0034] Figure 8 This is a schematic diagram of the structure of a rotating handle of an anti-touch automatic control system for monitoring the hoisting of a hydro-generator rotor proposed by the present invention;

[0035] Figure 9 This is a schematic diagram of the sliding shaft structure of an anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor proposed in the present invention;

[0036] Figure 10 This is a schematic diagram of the structure of an adjustment connection sleeve of an anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor proposed in the present invention;

[0037] Figure 11 A physical diagram showing the actual installation of fixed operating components of an anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor proposed in the present invention on a hydro-generator rotor;

[0038] Figure 12 This is a structural schematic diagram of the spring buffer mechanism of an anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor proposed in the present invention.

[0039] Description of Reference Numerals

[0040] 1-C-clip,

[0041] 2-Fix the back panel,

[0042] 3-Guide sleeve,

[0043] 4-Pole windshield,

[0044] 5-motor, 51-adjusting connecting sleeve, 511-fifth mounting hole, 52-positioning nut, 53-friction plate, 54-pressure plate, 55-spring, 56-stop screw,

[0045] 6-rotating handle, 61-first connecting hole, 62-second connecting hole,

[0046] 7-first rotating shaft, 71-rotating shaft retaining ring, 72-gasket,

[0047] 8-connecting rod,

[0048] 9- Second rotating shaft,

[0049] 10-sliding shaft, 101-third connecting hole, 102-fourth connecting hole,

[0050] 11-spring buffer mechanism, 111-hook, 112-buffer mechanism body, 113-screw plug, 114-compression spring, 115-stopper, 116-nut, 117-buffer groove,

[0051] 12-hook rope,

[0052] 13- Pull the slats,

[0053] 14- Power supply,

[0054] 15- Main switch,

[0055] 16-Transmission,

[0056] 17-Signal indicator light,

[0057] 18- Overcurrent relay,

[0058] 19-Countersunk screw. DETAILED DESCRIPTION

[0059] The specific implementation of the present invention is described below with reference to the accompanying drawings and embodiments:

[0060] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose that can be achieved by the present invention.

[0061] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0062] like Figures 1 to 12 As shown, it shows a specific embodiment of the present invention:

[0063] Example 1

[0064] A touch-proof automatic control system for monitoring the hoisting of a hydro-generator rotor comprises a fixed operating component and an automatic control component. The fixed operating component has multiple groups, and the number of fixed operating components is equal to the number of magnetic poles of the hydro-generator rotor. The fixed operating component comprises a fixing device and a moving device. The fixing devices are respectively mounted on the magnetic pole windshield plates on the upper surface of the hydro-generator rotor, and the moving devices are respectively mounted on the corresponding fixing devices. The automatic control component is connected to each fixed operating component.

[0065] In this embodiment, Figure 11 As shown, it can be seen from the figure that the fixed operating component is installed on the upper surface of the hydro-generator rotor, and the anti-touch automatic control system is fixedly installed on the magnetic pole wind shield on the upper surface of the hydro-generator rotor through a fixing device. The fixing device provides support for the motion device to ensure stable operation. The motion device is installed on the fixing device, and the automatic control component is connected to the motor 5 of the motion device. The automatic control component controls the up and down movement of the pull-up slat 13 of the motion device to monitor the installation gap between the rotor and the stator during the rotor hoisting process, replaces manual maintenance work, reduces operation risks, ensures operation safety, and judges whether a jam occurs by the lighting and extinguishing status of the signal indicator light 17, and promptly instructs the lifting personnel to stop the operation. The setting of the anti-touch automatic control system reduces the investment of manpower and material resources, promptly detects jamming phenomena, further improves work efficiency, ensures maintenance quality, and ensures personnel safety.

[0066] In this embodiment, the number of fixed operating components is equal to the number of magnetic poles of the hydro-generator rotor. Each set of fixing devices and moving devices is respectively installed on the magnetic pole of the corresponding hydro-generator rotor, so that the position of each magnetic pole is monitored, meeting the actual requirements of the gap during the installation of the hydro-generator rotor, ensuring that there is sufficient gap between the rotor and the stator during the lifting process, thereby ensuring the maintenance safety of the hydro-generator set.

[0067] The fixing device includes a C-type clamp 1, a fixed backplate 2, and a guide sleeve 3. The C-type clamp 1 is a short lower and long upper structure and is fixedly installed on the pole windshield 4 on the upper surface of the hydro-generator rotor. The fixed backplate 2 is connected to the C-type clamp 1 by nuts and bolts and is located on the upper surface of the C-type clamp 1. A mounting hole is provided above the fixed backplate 2. The guide sleeve 3 is installed below the fixed backplate 2 and is located on the right side. A through hole is provided in the middle of the guide sleeve 3.

[0068] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the C-clamp 1 is fixedly mounted on the pole windshield 4 on the upper surface of the hydro-generator rotor, providing a reliable and effective supporting force for the fixing device. The fixed back plate 2 is connected to the C-clamp 1 by nuts and bolts, and is located on the upper surface of the C-clamp 1. The C-clamp 1 provides supporting force for the fixed back plate 2. The through hole in the middle position of the guide sleeve 3 is used for the up and down movement of the sliding shaft 10. In actual field applications, the diameter of the through hole should be slightly larger than the diameter of the sliding shaft 10 to achieve smooth up and down movement of the sliding shaft 10, thereby ensuring the effectiveness of the monitoring results using the system.

[0069] In this embodiment, the C-clip 1 is a short lower and long upper structure, and the size of its lower portion is designed according to the air gap between the stator and the rotor, ensuring that the C-clip 1 can be disassembled after the rotor falls, and can also be reused, saving costs.

[0070] The motion device includes a motor 5, a rotating handle 6, a first rotating shaft 7, a connecting rod 8, a second rotating shaft 9, a sliding shaft 10, a spring buffer mechanism 11, a hanging rope 12, and a pull strip 13. The motor 5 is installed on the left side of the mounting hole above the fixed back plate 2, and the output shaft of the motor 5 passes through the mounting hole and is located on the right side of the fixed back plate 2. A first connecting hole 61 is provided below the rotating handle 6, and a second connecting hole 62 is provided above the rotating handle 6. The first connecting hole 61 is connected to the output shaft of the motor 5, and the second connecting hole 62 is connected to the upper end of the connecting rod 8 through the first rotating shaft 7. Together, the third connecting hole 101 is opened at the upper end of the sliding shaft 10, and the fourth connecting hole 102 is opened at the lower end. The lower end of the connecting rod 8 is connected to the third connecting hole 101 at the upper end of the sliding shaft 10 through the second rotating shaft 9. The lower end of the sliding shaft 10 passes through the through hole of the guide sleeve 3. The upper end of the spring buffer mechanism 11 is provided with a hook 111, and the hook 111 passes through the fourth connecting hole 102 at the lower end of the sliding shaft 10 and is connected to the sliding shaft 10. The lower end of the spring buffer mechanism 11 is connected to the connecting rope 12, and the other end of the connecting rope 12 is connected to the pull strip 13.

[0071] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 8 、 Figure 9As shown, after the anti-touch automatic control system is powered on, the motor 5 starts to rotate. During the rotation of the motor 5, the rotating handle 6 connected to the motor 5 also starts to rotate accordingly. The first connecting hole 61 of the rotating handle 6 is connected to the output shaft of the motor 5, so that the second connecting hole 62 above the rotating handle 6 performs a circular motion with the first connecting hole 61 as the center and the distance between the first connecting hole 61 and the second connecting hole 62 as the radius. Therefore, the upper end of the connecting rod 8 connected to the second connecting hole 62 through the first rotating shaft 7 rotates. Since the lower end of the connecting rod 8 passes through the second rotating shaft 9 and the third connecting hole 10 at the upper end of the sliding shaft 10 1 is connected, the lower end of the sliding shaft 10 passes through the through hole of the guide sleeve 3, providing a pulling force in a fixed direction. Therefore, the lower end of the connecting rod 8 moves up and down under the action of the rotational force of its upper end. The spring buffer mechanism 11 is installed in the fourth connecting hole 102 at the lower end of the sliding shaft 10 to provide a buffer force. The lower part of the spring buffer mechanism 11 is connected to the connecting rope 12, and the connecting rope 12 is connected to the pulling strip 13. Through the setting of the motion device, the power provided by the motor 5 is converted into the up and down movement of the pulling strip 13, thereby replacing the manual monitoring method during the hoisting process of the turbine generator rotor, ensuring the safety of the operators, and improving the efficiency of the maintenance work to a certain extent.

[0072] The spring buffer mechanism 11 includes a hook 111, a buffer mechanism body 112, a plug screw 113, a compression spring 114, a stopper 115, and a nut 116. A buffer groove 117 is provided at the upper end of the buffer mechanism body 112. One end of the hook 111 is connected to the fourth connecting hole 102 at the lower end of the sliding shaft 10, and the other end is located in the buffer groove 117. The stopper 115 is located at the bottom position of the buffer groove 117. The fixed end of the compression spring 114 is fixed to the side of the stopper 115 close to the bottom of the buffer groove 117 by a nut 116. The plug screw 113 is installed at the top of the buffer groove 117. The other end of the compression spring 114 is fixedly connected to the bottom end of the hook 111.

[0073] In this embodiment, Figure 12 As shown, the spring buffer mechanism 11 provides a certain buffer force when the pull strip 13 gets stuck. The specific process is: when the pull strip 13 gets stuck, the tension applied to the spring buffer mechanism 11 will increase, that is, the tension borne by the hook 111 will increase. At this time, the lower end of the hook 11 will reduce the increased tension in the buffer groove 117 under the action of the compression spring 114, providing buffer force, effectively avoiding the entire motion device from tipping over, and ensuring safe operation.

[0074] The automatic control component is installed in the control box, including a power supply 14, a main switch 15, a transmission 16, a signal indicator light 17, and an overcurrent relay 18. There are multiple groups of signal indicator lights 17 and overcurrent relays 18. The motors 5 in each moving device of the fixed operating component are connected to the corresponding signal indicator lights 17 through wires. The motors 5, signal indicator lights 17, and overcurrent relays 18 are connected in series and parallel with each other to form a gap monitoring system. Each group of gap monitoring systems is connected in parallel between the transmission 16 and the power supply 14 and the main switch 15.

[0075] Specifically, the automatic control component also includes a remote control circuit breaker, which is connected between the main switch 15 and the transmission 16. With the remote control circuit breaker, the operator can stand on the ground to start and stop the automatic control system to ensure the safety of the lifting process.

[0076] In this embodiment, Figure 7 As shown, the automatic control component is connected to the motor 5 in the fixed operating component corresponding to each magnetic pole on the rotor of the hydro-generator. The motor 5 in each moving device of the fixed operating component is connected to the corresponding signal indicator light 17 through a wire. The motor 5, signal indicator light 17, overcurrent relay 18, power supply 14, main switch 15, and transmission 16 form a loop. The automatic control component controls the operating speed of each branch motor 5 through the transmission 16, and the speed and operating current are adjustable.

[0077] The normal operation process of the automatic control component during monitoring is as follows:

[0078] When the power supply 14 is powered, the main switch 15 is closed. At this time, the signal indicator lights 17 in the control box are all lit, the through-hole remote control controls the remote circuit breaker to start, and the motor 5 starts working, thereby rotating the handle 6 to drive the connecting rod 8 and the sliding shaft 10 to slide up and down in the guide sleeve 3, and the spring buffer mechanism 11 drives the pull plate 13 to move up and down in the air gap between the stator and the rotor.

[0079] The abnormal operation process of the automatic control component during monitoring is as follows:

[0080] During the actual lifting process, when the gap between the stator and the rotor is too small, causing the pull strip 13 at the corresponding position of a certain magnetic pole to get stuck during movement, the load of the motor 5 will increase, thereby causing the current of the branch to increase, and the overcurrent relay 18 corresponding to the circuit will be activated. The normally closed contact of the overcurrent relay 18 will be disconnected, thereby disconnecting the branch circuit, and the state of the signal indicator light 17 corresponding to the branch will change from the lit state to the off state. After discovering this phenomenon, the ground commander ordered the crane to stop lifting and adjusted the gap to restore the jamming of the pull strip 13. The jamming phenomenon disappears, so that the contacts of the overcurrent relay 18 of the branch are closed, the current of the branch returns to normal, the signal indicator light 17 is re-lit, and the pull strip 13 on the magnetic pole corresponding to the branch motor 5 continues to move up and down, realizing automatic control of anti-touch monitoring during the lifting of the turbine generator rotor.

[0081] In general, this embodiment uses an automatic control component to replace manual pulling of the slat 13 for monitoring, thereby reducing operational risks. The jamming of the slat can be detected immediately through the indication of the signal indicator light 17. A spring buffer mechanism is used to ensure that when the slat 13 gets stuck, the entire motion device can be effectively prevented from tipping over, thereby ensuring safety during use.

[0082] Example 2

[0083] On the basis of the above-mentioned embodiment 1, in order to ensure the stability of the anti-touch automatic control system during operation, this embodiment 2 is specially proposed.

[0084] Specifically, the motor output shaft of the motion device and the rotating handle 6 are connected through a rotary mechanism with adjustable torque. The rotary mechanism with adjustable torque includes an adjusting connecting sleeve 51, a positioning nut 52, a friction plate 53, a pressure plate 54, and a spring 55. The adjusting connecting sleeve 51 is installed on the output shaft of the motor 5. The adjusting connecting sleeve 51 is a T-shaped structure. The positioning nut 52, spring 55, pressure plate 54, and friction plate 53 are sequentially inserted into the outside of the adjusting connecting sleeve 51. The rotating handle 6 is connected between the pressure plate 54 and the right end of the adjusting connecting sleeve 51. There are two friction plates 55, one of which is located between the pressure plate 54 and the rotating handle 6, and the other is located between the end face of the adjusting connecting sleeve 51 and the rotating handle 6. The spring 55 is connected between the positioning nut 52 and the pressure plate 54.

[0085] In this embodiment, Figure 5 As shown, the pressing force between the friction plate 53 and the rotating handle 6 is adjusted by the positioning nut 52, so that the rotary mechanism outputs torque, thereby adjusting the pumping force applied to the pull strip 13, ensuring the stability of the anti-touch automatic control system.

[0086] Specifically, the torque-adjustable rotary mechanism further includes a stop screw 56 . A fifth mounting hole 511 is defined on the left side of the adjustment connecting sleeve 51 , and the stop screw 56 is installed in the fifth mounting hole 511 .

[0087] In this embodiment, Figure 10 As shown, the stop screw 56 is used to fix the position of the positioning nut 52, ensuring the reliability of the torque-adjustable rotary mechanism after the torque is adjusted using the positioning nut 52, and ensuring the stability of the system operation.

[0088] Example 3

[0089] On the basis of the above embodiments, in order to achieve accurate monitoring during the hoisting process of the hydro-generator rotor, this third embodiment is proposed.

[0090] Specifically, the number of the signal indicator lights 17 and the overcurrent relays 18 is equal to the number of magnetic poles of the hydro-generator rotor.

[0091] In this embodiment, the number of signal indicator lights 17 and overcurrent relays 18 is set based on the corresponding number of magnetic poles to monitor the air gap between each magnetic pole position on the rotor and the stator, thereby achieving accurate detection and ensuring operation quality.

[0092] Example 4

[0093] On the basis of the above embodiments, in order to ensure that the anti-touch automatic control system is better applied in actual field work and to improve work efficiency and safety, this fourth embodiment is proposed.

[0094] Specifically, the power supply 14 is a mobile low-voltage DC power supply.

[0095] In this embodiment, the power supply 14 adopts a mobile low-voltage DC power supply to avoid long-distance power supply wiring and has strong controllability.

[0096] Specifically, the motor adopts a low-speed motor, and the current is controlled by the overcurrent relay 18 to effectively ensure the safe operation of each branch system.

[0097] Example 5

[0098] Specifically, the hanging rope 12 is an elastic hanging rope.

[0099] In this embodiment, the connecting rope 12 is an elastic connecting rope to ensure sufficient elasticity so that the motor will not be blocked when the pulling slat 13 is stuck.

[0100] Specifically, the first rotating shaft 7 and the second rotating shaft 9 are connected to the connecting rod 8 and sealed using a gasket 72 and a rotating shaft retaining ring 71 .

[0101] Specifically, the C-shaped clamp 1 is fixed to the magnetic pole windshield 4 on the upper surface of the hydro-generator rotor by countersunk screws 19 .

[0102] Example 6

[0103] In this embodiment, when one of the branches of the anti-touch automatic control system is damaged, during the actual maintenance work, the branch can be shielded, the spring buffer mechanism 11 in the motion device corresponding to the branch can be removed, and the slats 13 can be manually pulled out. This can ensure the continued completion of the maintenance work, avoid the impact of long-term maintenance, and will not affect work efficiency. At the same time, the manpower input is within a controllable range.

[0104] To sum up, the automatic control system controls the up and down movement of the pull-up slats 13 of the motion component through the automatic control component, thereby monitoring the installation gap between the rotor and the stator during the rotor lifting process to ensure safety. It determines whether a jam occurs by the lighting and extinguishing status of the signal indicator light 17, and promptly instructs the lifting personnel to stop the operation. The setting of the anti-touch automatic control system reduces the investment of manpower and material resources, further improves work efficiency, ensures maintenance quality, and ensures personnel safety.

[0105] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the scope of the present invention.

[0106] Many other changes and modifications can be made without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. An anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor, characterized in that: It includes fixed operating components and automatic control components. There are multiple groups of fixed operating components, and the number of fixed operating components is equal to the number of magnetic poles of the hydro-generator rotor. The fixed operating components include fixing devices and moving devices. The fixing devices are respectively installed on the magnetic pole windshield plates on the upper surface of the hydro-generator rotor. The moving devices are respectively installed on the corresponding fixing devices. The automatic control component is connected to each fixed operating component. The fixing device comprises a C-type clamp (1), a fixed back plate (2), and a guide sleeve (3). The C-type clamp (1) is a structure with a short bottom and a long top, and is fixedly mounted on a magnetic pole windshield (4) on the upper surface of the turbine generator rotor. The fixed back plate (2) is connected to the C-type clamp (1) by nuts and bolts and is located on the upper surface of the C-type clamp (1). A mounting hole is provided above the fixed back plate (2). The guide sleeve (3) is mounted below the fixed back plate (2) and is located on the right side. A through hole is provided in the middle of the guide sleeve (3). The motion device comprises a motor (5), a rotating handle (6), a first rotating shaft (7), a connecting rod (8), a second rotating shaft (9), a sliding shaft (10), a spring buffer mechanism (11), a hanging rope (12), and a pull bar (13). The motor (5) is mounted on the left side of the mounting hole above the fixed back plate (2). The output shaft of the motor (5) passes through the mounting hole and is located on the right side of the fixed back plate (2). A first connecting hole (61) is provided below the rotating handle (6) and a second connecting hole (62) is provided above the rotating handle. The first connecting hole (61) is connected to the output shaft of the motor (5), and the second connecting hole (62) is connected to the upper end of the connecting rod (8) through the first rotating shaft (7). The sliding shaft (10) is connected together, the upper end of the sliding shaft (10) is provided with a third connecting hole (101), and the lower end is provided with a fourth connecting hole (102), the lower end of the connecting rod (8) is connected to the third connecting hole (101) at the upper end of the sliding shaft (10) through the second rotating shaft (9), the lower end of the sliding shaft (10) passes through the through hole of the guide sleeve (3), the upper end of the spring buffer mechanism (11) is provided with a hook (111), the hook (111) passes through the fourth connecting hole (102) at the lower end of the sliding shaft (10) and is connected to the sliding shaft (10), the lower end of the spring buffer mechanism (11) is connected to the connecting rope (12), and the other end of the connecting rope (12) is connected to the pull plate (13); The automatic control component is installed in a control box and includes a power supply (14), a main switch (15), a transmission (16), a signal indicator light (17), and an overcurrent relay (18). There are multiple groups of the signal indicator lights (17) and the overcurrent relay (18). The motors (5) in each motion device of the fixed operating component are connected to the corresponding signal indicator lights (17) through wires. The motors (5), the signal indicator lights (17), and the overcurrent relay (18) are connected in series to form a gap monitoring system. Each group of gap monitoring systems is connected in parallel between the transmission (16), the power supply (14), and the main switch (15).

2. The anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor according to claim 1, characterized in that: The motor output shaft of the motion device and the rotating handle (6) are connected through a rotary mechanism with adjustable torque. The rotary mechanism with adjustable torque includes an adjusting connecting sleeve (51), a positioning nut (52), a friction plate (53), a pressure plate (54), and a spring (55). The adjusting connecting sleeve (51) is mounted on the output shaft of the motor (5). The adjusting connecting sleeve (51) is in a T-shaped structure. The positioning nut (52), the spring (55), the pressure plate (54), and the friction plate (53) are sequentially sleeved on the outside of the adjusting connecting sleeve (51). The rotating handle (6) is connected between the pressure plate (54) and the right end of the adjusting connecting sleeve (51). There are two friction plates (53), one of which is located between the pressure plate (54) and the rotating handle (6), and the other is located between the end surface of the adjusting connecting sleeve (51) and the rotating handle (6). The spring (55) is connected between the positioning nut (52) and the pressure plate (54).

3. The anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor according to claim 2, characterized in that: The torque-adjustable rotary mechanism further comprises a stop screw (56), a fifth mounting hole (511) is provided on the left side of the adjustment connecting sleeve (51), and the stop screw (56) is mounted in the fifth mounting hole (511).

4. The anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor according to claim 1, characterized in that: The spring buffer mechanism (11) includes a hook (111), a buffer mechanism body (112), a screw plug (113), a compression spring (114), a stopper (115), and a nut (116). A buffer groove (117) is provided at the upper end of the buffer mechanism body (112). One end of the hook (111) is connected to the fourth connecting hole (102) at the lower end of the sliding shaft (10), and the other end is located in the buffer groove (117). The stopper (115) is located at the bottom of the buffer groove (117). The fixed end of the compression spring (114) is fixed to a side of the stopper (115) close to the bottom of the buffer groove (117) through a nut (116). The screw plug (113) is installed at the top of the buffer groove (117). The other end of the compression spring (114) is fixedly connected to the bottom end of the hook (111).

5. The anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor according to claim 1, characterized in that: The number of the signal indicator lights (17) and the overcurrent relays (18) is equal to the number of magnetic poles of the hydro-generator rotor.

6. The anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor according to claim 1, characterized in that: The automatic control component further comprises a remote control circuit breaker, which is connected between the main switch (15) and the transmission (16).

7. The anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor according to claim 1, characterized in that: The power supply (14) adopts a mobile low-voltage DC power supply, and the motor adopts a low-speed DC motor.

8. The anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor according to claim 1, characterized in that: The hanging rope (12) is an elastic hanging rope.

9. The anti-collision automatic control system for monitoring the hoisting of a hydro-generator rotor according to claim 1, characterized in that: The first rotating shaft (7) and the second rotating shaft (9) are connected to the connecting rod (8) and are sealed using a gasket (72) and a rotating shaft retaining ring (71).

10. The anti-collision automatic control system for monitoring the installation of a hydro-generator rotor according to claim 1, characterized in that: The C-shaped clamp (1) is fixed to the magnetic pole windshield (4) on the upper surface of the hydro-generator rotor via countersunk screws (19).

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