A hydraulic turbine rotor dynamic balance test device based on multi-sensor detection

Abstract

The present invention relates to the field of turbine rotor detection technology, specifically to a turbine rotor dynamic balance test device based on multi-sensor detection, including a support seat installed on the outside of a turbine bearing seat, an outer ring is provided on the top of the support seat, a sensor outer frame is movably connected to the inner side of the outer ring, and an auxiliary component is provided on the top of the support seat. The present invention provides a turbine rotor dynamic balance test device based on multi-sensor detection, which has an arc frame that rotates along the outer ring, and the guide rails and internal structures connected thereto will approach or move away from the main shaft directly connected to the turbine rotor. When the main shaft rotates eccentrically, its motion trajectory will touch the nearby contact wheel, and the flat plate connected thereto will slide along the guide rail to push the pressure sensor outside the sensor bracket, and an alarm can be triggered at this time to prompt surrounding personnel to take measures such as shutdown maintenance in time.

Description

Technical Field

[0001] The invention relates to the technical field of water turbine rotor detection, in particular to a water turbine rotor dynamic balance test device based on multi-sensor detection. Background Art

[0002] As we all know, the turbine rotor is the rotating part of the hydro-generator, which is mainly composed of a rotating shaft, a bracket, a yoke, a magnetic pole, a current collecting device, etc. One end is connected to the main shaft of the turbine to transmit torque. During the operation of the turbine rotor, due to manufacturing errors, uneven materials, wear and tear, etc., the mass distribution may be uneven, resulting in dynamic imbalance of the rotor. This imbalance will cause the vibration and noise of the turbine to increase, reduce the efficiency and stability of the unit, and may even cause equipment damage.

[0003] When performing a dynamic balance test on a turbine rotor, a sensor is required to detect the dynamic balance. The problem with the prior art is that during the turbine rotor detection process, a sensor is usually installed on the outside of the bearing seat to continuously monitor the main shaft. The monitoring content is usually the rotation speed and whether there is jitter during the rotation of the main shaft. First of all, although the rotation speed monitoring can monitor the increase or decrease in the rotation speed of the turbine rotor in a short period of time, this data is usually related to the surrounding environment and the water flow environment. It is difficult to quickly determine whether it is a problem with the turbine rotor itself through the measurement of the rotation speed. Secondly, when a single sensor rotates eccentrically, the eccentric rotation will cause the center of mass of the rotor to not coincide with the center of rotation, and its motion trajectory may be elliptical. Therefore, it may not touch the pressure sensor and therefore will not trigger an alarm.

[0004] Based on the above-mentioned situation, we found that it is difficult for the existing turbine rotor detection device to avoid the above problems at the same time. Therefore, we proposed a turbine rotor dynamic balancing test device based on multi-sensor detection, which can judge the possibility of turbine rotor damage by speed while reducing environmental influences such as water flow, and is more sensitive to vibration or deformation damage detection. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a turbine rotor dynamic balancing test device based on multi-sensor detection, which has the advantage of being able to judge the possibility of turbine rotor damage by rotating speed while reducing environmental influences such as water flow, and is more sensitive to vibration or deformation damage detection.

[0007] (II) Technical solution

[0008] The above technical objectives of the present invention are achieved through the following technical solutions: A turbine rotor dynamic balance test device based on multi-sensor detection, comprising a support seat installed on the outside of a turbine bearing seat, an outer ring is provided on the top of the support seat, a sensor outer frame is movably connected to the inner side of the outer ring, and an auxiliary component is provided on the top of the support seat;

[0009] The auxiliary component comprises a rotating ring installed on the outside of the main shaft of the turbine and an empty frame on the outside of the rotating ring, a magnetic ring is fixedly connected to the bottom of the outside of the rotating ring, a plurality of connecting rods are fixedly connected to the outside of the rotating ring, a follow-rotating frame is fixedly connected to the side of the connecting rod away from the rotating ring, and a test structure is provided on the inside of the follow-rotating frame;

[0010] The sensor outer frame includes an arc frame, a guide rail is installed on the inner side of the arc frame, a flat plate is provided on the inner side of the guide rail, a side of the flat plate close to the main shaft of the turbine is rotatably connected to a contact wheel, a side of the flat plate away from the contact wheel is provided with a sensor bracket, a side of the sensor bracket close to the flat plate is provided with a pressure sensor, the inner side of the guide rail is slidably connected to the sensor bracket, an adjustment plate is provided on the inner side of the guide rail, a side of the adjustment plate close to the sensor bracket is fixedly connected to a connecting spring, and a side of the connecting spring close to the sensor bracket is fixedly connected to the sensor bracket;

[0011] A transmission ring is provided on the inner side of the outer ring, a vertical frame is fixedly connected to the inner side of the outer ring, a transmission block is slidably connected to the inner side of the vertical frame, a side of the transmission block close to the transmission ring is fixedly connected to the transmission ring, an extension cylinder is fixedly connected to the inner side of the transmission ring, a side of the extension cylinder close to the arc frame is rotatably connected to a pressure wheel, and a side of the pressure wheel close to the arc frame is in contact with the arc frame.

[0012] By adopting the above technical scheme, the structure is stably installed by setting a support seat, and the outer ring is matched with the sensor outer frame to install the contact sensor for detecting whether the turbine rotor and the main shaft have eccentric rotation. The arc frame is arranged on the inner side of the outer ring and can be tilted and rotated at a small angle. When the arc frame rotates along the outer ring, the guide rail and the internal structure connected thereto will approach or move away from the main shaft directly connected to the turbine rotor. Since multiple sets of arc frames are arranged and are pushed synchronously by the transmission ring, the contact wheels on the inner sides of multiple guide rails will also approach or move away from the main shaft synchronously. When the main shaft rotates eccentrically, its motion trajectory will touch the approaching contact wheel, and the flat plate connected thereto will slide along the guide rail to push the outer structure of the sensor bracket. The pressure sensor can trigger an alarm to prompt the surrounding personnel to take measures such as shutdown maintenance in time. The vertical frame inside the outer ring cooperates with the transmission block. When the transmission block moves vertically along the vertical frame, the transmission ring connected to it will also move in the vertical direction. The extension tube on the inside will be pushed on the inside of the arc frame through the pressure wheel to make it rotate and tilt along the outer ring to adjust its position. By setting up auxiliary components, it is used to detect the vibration and speed of the main shaft. The rotating ring is installed on the outside of the main shaft and rotates synchronously with the main shaft. The rotating frame connected to it through the connecting rod will also rotate synchronously. The set empty frame is used to continue to detect the vibration of the main shaft, and the set test structure can continue to detect abnormal speed changes of the main shaft while reducing the influence of the external environment.

[0013] The present invention is further configured as follows: the hollow frame includes a frame body, the frame body is made of two semi-circular hollow aluminum materials, a spacer ring is fixedly connected to the inner side of the frame body, a pressure sensor is fixedly connected to the side of the spacer ring close to the magnetic ring, a hollow ring is fixedly connected to the inner side of the frame body, a trigger rod is slidably connected to the inner side of the hollow ring, a magnetic sheet is fixedly connected to the side of the trigger rod close to the magnetic ring, a side of the magnetic sheet close to the magnetic ring repels the magnetic ring, a protrusion is provided on the side of the trigger rod away from the magnetic sheet, a tension spring is sleeved on the outer side of the trigger rod, and both ends of the tension spring are in contact with the hollow ring and the protrusion of the trigger rod respectively.

[0014] By adopting the above technical solution, by setting a hollow frame on the outside of the rotating ring, the magnetic sheet connected to the trigger rod and the magnetic ring are in a relatively balanced state. If the main shaft vibrates, the magnetic ring connected to it through the rotating ring will also rotate. Therefore, the magnetic sheet and the trigger rod that repel each other will press against the pressure sensor on the outside of the spacer ring to facilitate detection.

[0015] The present invention is further configured as follows: the test structure includes a collar and an inertia ring clamped on the inner side of the rotating ring, the inertia ring is arranged on the outer side of the collar, the inner side of the inertia ring and the inner side of the collar are both fixedly connected with ratchets made of rubber material, the outer side of the inertia ring is fixedly connected with a throwing rod, the inner side of the follow-up frame is slidably connected with an inertia block, the outer side of the inertia block is installed with a trigger device, the bottom of the inner side of the follow-up frame is fixedly connected with a thin plate, and the bottom of the thin plate is installed with a photoelectric sensor.

[0016] By adopting the above technical solution, by setting a rotating ring, while the main shaft rotates, the sleeve ring pushes the inertia ring on the inner side of the rotating ring to rotate through the ratchet, and the inertia block connected to the inertia ring through the swing rod rotates on the inner side of the rotating frame. Since the flow rate of the water flow is relatively slow whether it is accelerated or reduced, and if the equipment structure is deformed or the transmission structure is damaged, the speed will decrease rapidly, so the rotating frame will reduce the speed together with the main shaft, while the inertia block and the inertia ring will continue to rotate along the sleeve ring, and the slopes of the ratchet will contact each other without forming a rigid barrier, so The speed at which the inertia block moves on the inner side of the tracking frame will be faster than the rotation speed of the tracking frame. By detecting the position change of the inertia block relative to the tracking frame, the change in the spindle speed can be indirectly inferred. When the position of the inertia block changes, the signal received by the photoelectric sensor will change, thereby realizing the detection of rapid changes in the rotation speed. When the water flow causes a relatively stable rotation speed, the pawl on the inner side of the inertia ring will briefly stop contacting the pawl on the outer side of the collar, but will not produce a large position deviation. Therefore, after the subsequent water flow stabilizes, it will continue to be driven by the collar to rotate synchronously.

[0017] The present invention is further configured as follows: a pulley is rotatably connected to the inner side of the inertia block, the top of the top pulley contacts the rotating frame, and the bottom of the bottom pulley contacts the thin plate.

[0018] By adopting the above technical solution and setting a pulley, the inertia block can slide more smoothly inside the rotating frame. The thin plate is used to continue to protect the photoelectric sensor at the bottom, while providing contact for the bottom pulley and smoothly displacing the inertia block.

[0019] The present invention is further configured as follows: an inclined frame is fixedly connected to the outer side of the empty frame, the bottom of the inclined frame is fixedly connected to the support seat, and an angle frame is fixedly connected to the outer side of the outer ring, and the bottom of the angle frame is fixedly connected to the support seat.

[0020] The above technical solution is adopted to provide a tilting frame and an angle frame to continue to stably install and support the support seat and the top structure.

[0021] The present invention is further configured as follows: a slide is fixedly connected to the outer side of the transmission ring, a limit frame is slidably connected to the outer side of the slide, and a side of the limit frame close to the outer ring is fixedly connected to the outer ring.

[0022] By adopting the above technical solution, by setting a slide frame to cooperate with the limit frame, when the transmission ring moves vertically, it can be easily limited to avoid the structure from tilting and causing it to be unable to be used normally.

[0023] The present invention is further configured as follows: a transmission screw is rotatably connected to the inner side of the vertical frame, a control motor is installed at the bottom of the vertical frame, and an output end of the control motor is fixedly connected to the transmission screw.

[0024] By adopting the above technical solution, a transmission screw is set, and when the control motor drives the transmission screw to rotate inside the vertical frame, the transmission screw will drive the transmission block threadedly connected thereto to move vertically.

[0025] The present invention is further configured as follows: an integrally formed narrow plate is provided on the side of the guide rail away from the turbine main shaft, an adjusting screw is threadedly connected to the inner side of the narrow plate, and the adjusting screw is rotatably connected to the adjusting plate on the side close to the adjusting plate.

[0026] By adopting the above technical solution, a narrow plate is arranged to cooperate with the adjusting screw. When the adjusting screw is rotated, the adjusting plate connected thereto will push the adjusting plate, the connecting spring and the sensor bracket to move synchronously, so that they move to a position that is convenient for contact with the flat plate.

[0027] The present invention is further configured as follows: a cushion block is slidably connected to the inner side of the guide rail, and the inner side of the cushion block is fixedly connected to the flat plate.

[0028] By adopting the above technical solution and arranging the pads, the flat plate can be slid smoothly along the inner side of the guide rail and can be lowered and lifted to a vertical height that is convenient for use.

[0029] The present invention is further configured as follows: an integrally formed rotating frame is provided on the inner side of the outer ring, the inner side of the rotating frame is rotatably connected to the arc frame, both sides of the arc frame are fixedly connected to torsion springs, and the torsion spring is fixedly connected to the rotating frame on one side close to the rotating frame.

[0030] By adopting the above technical solution, by setting up a rotating frame, it is convenient to provide a rotation fulcrum for the arc frame, and the torsion spring is used to reset the arc frame when there is no force on it.

[0031] (III) Beneficial effects

[0032] Compared with the prior art, the present invention provides a turbine rotor dynamic balance test device based on multi-sensor detection, which has the following beneficial effects:

[0033] The turbine rotor dynamic balancing test device based on multi-sensor detection is used to install a contact sensor for detecting whether the turbine rotor and the main shaft have eccentric rotation by setting an outer ring to match the sensor outer frame. When the arc frame rotates along the outer ring, the guide rail and internal structure connected thereto will approach or move away from the main shaft directly connected to the turbine rotor, and the contact wheels on the inner sides of the multiple guide rails will also approach or move away from the main shaft synchronously. When the main shaft rotates eccentrically, its motion trajectory will touch the approaching contact wheel, and the flat plate connected thereto will slide along the guide rail to push the pressure sensor outside the sensor bracket. An alarm can be triggered to prompt surrounding personnel to take measures such as shutdown maintenance in time. When the transmission block moves vertically along the vertical frame, the extension cylinder will be pushed on the inner side of the arc frame through the pressure wheel, causing it to rotate and tilt along the outer ring for position adjustment. An auxiliary component is set to detect the vibration and speed of the main shaft. The rotating ring is installed on the outside of the main shaft and rotates synchronously with the main shaft. The rotating frame connected to it by a connecting rod will also rotate synchronously. The set empty frame is used to continue to detect the vibration of the main shaft, and the set test structure can continue to detect abnormal speed changes of the main shaft while reducing the influence of the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0036] Figure 3 It is a structural schematic diagram of the flat plate in the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the sleeve ring in the present invention;

[0038] Figure 5 It is a structural schematic diagram of the auxiliary components in the present invention;

[0039] Figure 6 It is a structural schematic diagram of the tilting frame in the present invention;

[0040] Figure 7 It is a structural schematic diagram of the hollow frame of the present invention;

[0041] Figure 8 It is a schematic diagram of the structure of the outer ring in the present invention.

[0042] In the figure: 1, support seat; 2, outer ring; 3, sensor outer frame; 301, arc frame; 302, guide rail; 303, flat plate; 304, contact wheel; 305, sensor bracket; 306, connecting spring; 307, adjusting plate; 4, auxiliary components; 401, rotating ring; 402, hollow frame; 402a, frame body; 402b, spacer ring; 402c, hollow ring; 402d, trigger rod; 402e, magnetic sheet; 402f, tension spring; 403, magnetic ring; 404, connecting Connecting rod; 405, rotating frame; 406, test structure; 406a, sleeve; 406b, inertia ring; 406c, swing rod; 406d, inertia block; 406e, thin plate; 5, transmission ring; 6, vertical frame; 7, transmission block; 8, extension tube; 9, pressure wheel; 10, pulley; 11, tilt frame; 12, angle frame; 13, slide; 14, limit frame; 15, transmission screw; 16, narrow plate; 17, adjustment screw; 18, cushion block; 19, rotating frame; 20, torsion spring. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Example 1

[0045] See also Figure 1-Figure 8 A turbine rotor dynamic balance test device based on multi-sensor detection comprises a support seat 1 installed outside a turbine bearing seat, an outer ring 2 is provided on the top of the support seat 1, a sensor outer frame 3 is movably connected to the inner side of the outer ring 2, and an auxiliary component 4 is provided on the top of the support seat 1;

[0046] The sensor outer frame 3 includes an arc frame 301, a guide rail 302 is installed on the inner side of the arc frame 301, a flat plate 303 is provided on the inner side of the guide rail 302, a side of the flat plate 303 close to the main shaft of the turbine is rotatably connected with a contact wheel 304, a side of the flat plate 303 away from the contact wheel 304 is provided with a sensor bracket 305, a side of the sensor bracket 305 close to the flat plate 303 is provided with a pressure sensor, the inner side of the guide rail 302 is slidably connected to the sensor bracket 305, an adjustment plate 307 is provided on the inner side of the guide rail 302, a side of the adjustment plate 307 close to the sensor bracket 305 is fixedly connected with a connecting spring 306, and a side of the connecting spring 306 close to the sensor bracket 305 is fixedly connected to the sensor bracket 305;

[0047] A transmission ring 5 is provided on the inner side of the outer ring 2, a vertical frame 6 is fixedly connected to the inner side of the outer ring 2, a transmission block 7 is slidably connected to the inner side of the vertical frame 6, a side of the transmission block 7 close to the transmission ring 5 is fixedly connected to the transmission ring 5, an extension cylinder 8 is fixedly connected to the inner side of the transmission ring 5, a side of the extension cylinder 8 close to the arc frame 301 is rotatably connected to a pressing wheel 9, and a side of the pressing wheel 9 close to the arc frame 301 is in contact with the arc frame 301;

[0048] The structure is stably installed by setting a support seat 1, and the outer ring 2 is matched with the sensor outer frame 3 to install a contact sensor for detecting whether the turbine rotor and the main shaft are eccentrically rotated. The arc frame 301 is arranged on the inner side of the outer ring 2 and can be tilted and rotated at a small angle. When the arc frame 301 rotates along the outer ring 2, the guide rail 302 and the internal structure connected thereto will approach or move away from the main shaft directly connected to the turbine rotor. Since multiple sets of arc frames 301 are arranged and are pushed synchronously by the transmission ring 5, the contact wheels 304 on the inner sides of multiple guide rails 302 will also approach or move synchronously. The main shaft 304 is far away from the main shaft. When the main shaft rotates eccentrically, its movement trajectory will touch the nearby contact wheel 304. The flat plate 303 connected to it slides along the guide rail 302 to push the pressure sensor outside the sensor bracket 305. At this time, an alarm can be triggered to remind the surrounding personnel to take measures such as shutdown maintenance in time. The vertical frame 6 on the inner side of the outer ring 2 cooperates with the transmission block 7. When the transmission block 7 moves vertically along the vertical frame 6, the transmission ring 5 connected to it will also move in the vertical direction. The extension tube 8 on the inside will be pushed on the inner side of the arc frame 301 through the pressure wheel 9, so that it rotates and tilts along the outer ring 2 to adjust its position.

[0049] Among them, the outer side of the transmission ring 5 is fixedly connected with a slide 13, and the outer side of the slide 13 is slidably connected with a limit frame 14. The limit frame 14 is fixedly connected to the outer ring 2 on one side thereof. By arranging the slide 13 to cooperate with the limit frame 14, when the transmission ring 5 moves vertically, it can be convenient to limit it to avoid the structure from tilting and being unable to be used normally. The inner side of the vertical frame 6 is rotatably connected with a transmission screw 15. A control motor is installed at the bottom of the vertical frame 6. The output end of the control motor is fixedly connected to the transmission screw 15. By arranging the transmission screw 15, when the control motor drives the transmission screw 15 to rotate on the inner side of the vertical frame 6, the transmission screw 15 will drive the transmission block 7 threadedly connected thereto to move vertically. An integrally formed narrow plate 16 is provided on the side of the guide rail 302 away from the main shaft of the turbine. An adjusting screw 17 is threadedly connected to the inner side of the narrow plate 16. The adjusting screw 17 is rotatably connected to the adjusting plate 307 on one side thereof. By arranging the narrow The plate 16 cooperates with the adjusting screw rod 17. When the adjusting screw rod 17 is rotated, the adjusting plate 307 connected thereto will push the adjusting plate 307, the connecting spring 306 and the sensor bracket 305 to move synchronously, so that they move to a position convenient for contact with the flat plate 303. The inner side of the guide rail 302 is slidably connected with a cushion block 18, and the inner side of the cushion block 18 is fixedly connected to the flat plate 303. By setting the cushion block 18, it is convenient for the flat plate 303 to slide smoothly along the inner side of the guide rail 302, and lower and lift it to a vertical height convenient for use. An integrally formed rotating frame 19 is provided on the inner side of the outer ring 2, and the inner side of the rotating frame 19 is rotatably connected to the arc frame 301. Both sides of the arc frame 301 are fixedly connected with torsion springs 20, and the side of the torsion spring 20 close to the rotating frame 19 is fixedly connected to the rotating frame 19. By setting the rotating frame 19, it is convenient to provide a rotation fulcrum for the arc frame 301. The torsion spring 20 is used to reset the arc frame 301 when it is not subjected to force.

[0050] Working principle of this embodiment: When in use, the support seat 1 is directly installed on the outside of the bearing seat, the outer ring 2 cooperates with the sensor outer frame 3, and the outer ring 2 and the empty frame 402 are fixed by the angle frame 12 and the tilt frame 11. The transmission screw 15 is rotated on the inner side of the vertical frame 6 to adjust the position of the transmission block 7. The transmission ring 5 connected thereto can be vertically lifted and lowered, and the extension tube 8 on the inner side thereof will be pushed on the inner side of the arc frame 301 through the pressure wheel 9, so that it can be rotated and tilted along the outer ring 2 for position adjustment. The arc frame 301 can be tilted and rotated at a small angle on the inner side of the outer ring 2. When the arc frame 301 rotates along the outer ring 2, the guide rail 302 and the internal structure connected thereto will be close to or away from the main body directly connected to the turbine rotor. The axis is provided with multiple sets of arc frames 301 and are pushed synchronously by the transmission ring 5, so the contact wheels 304 on the inner sides of multiple guide rails 302 will also approach or move away from the main shaft synchronously, and the narrow plate 16 cooperates with the adjusting screw 17 to rotate the adjusting screw 17 until the adjusting plate 307 connected thereto pushes the adjusting plate 307 and the connecting spring 306 and the sensor bracket 305 to move synchronously, so that they move to a position convenient for contacting the flat plate 303. When the main shaft rotates eccentrically, its motion trajectory will touch the approaching contact wheel 304, and the flat plate 303 connected thereto will slide along the guide rail 302 to push the pressure sensor outside the sensor bracket 305. At this time, an alarm can be triggered to prompt the surrounding personnel to take measures such as shutdown maintenance in time.

[0051] Example 2

[0052] refer to Figure 5 A turbine rotor dynamic balancing test device based on multi-sensor detection also includes an auxiliary component 4, wherein the auxiliary component 4 includes a rotating ring 401 installed on the outside of the turbine main shaft and an empty frame 402 on the outside of the rotating ring 401, a magnetic ring 403 is fixedly connected to the bottom of the outside of the rotating ring 401, and a plurality of connecting rods 404 are fixedly connected to the outside of the rotating ring 401, and a follow-rotating frame 405 is fixedly connected to the side of the connecting rod 404 away from the rotating ring 401, and a test structure 406 is provided on the inner side of the follow-rotating frame 405. By setting the auxiliary component 4, it is used to detect the vibration and rotation speed of the main shaft. The rotating ring 401 is installed on the outside of the main shaft and rotates synchronously with the main shaft, and the follow-rotating frame 405 connected to it through the connecting rod 404 will also rotate synchronously. The set empty frame 402 is used to continue to detect the vibration of the main shaft, and the set test structure 406 can continue to detect the abnormal speed change of the main shaft speed while reducing the influence of the external environment.

[0053] The hollow frame 402 includes a frame body 402a, which is made of two semi-circular hollow aluminum materials. A spacer ring 402b is fixedly connected to the inner side of the frame body 402a. A pressure sensor is fixedly connected to the side of the spacer ring 402b close to the magnetic ring 403. A hollow ring 402c is fixedly connected to the inner side of the frame body 402a. A trigger rod 402d is slidably connected to the inner side of the hollow ring 402c. A magnetic sheet 402e is fixedly connected to the side of the trigger rod 402d close to the magnetic ring 403. The side of the magnetic sheet 402e close to the magnetic ring 403 repels the magnetic ring 403. A protrusion is provided on the side of the trigger rod 402d away from the magnetic sheet 402e. A tension spring 402f is sleeved on the outer side of the trigger rod 402d. The two ends of the tension spring 402f are respectively connected to the hollow ring 40 2c contacts with the raised part of the trigger rod 402d, and the empty frame 402 is arranged on the outside of the rotating ring 401, and the magnetic sheet 402e connected to the trigger rod 402d and the magnetic ring 403 are in a relatively balanced state. If the main shaft vibrates, the magnetic ring 403 connected to it through the rotating ring 401 will also rotate. Therefore, the magnetic sheet 402e and the trigger rod 402d that repel each other will press against the pressure sensor on the outside of the spacer ring 402b to facilitate detection. The test structure 406 includes a ring 406a and an inertia ring 406b that are clamped on the inside of the rotating ring 401. The inertia ring 406b is arranged on the outside of the ring 406a, and the inner side of the inertia ring 406b and the inner side of the ring 406a are fixedly connected with a ratchet made of rubber material. , the outer side of the inertia ring 406b is fixedly connected with a swing rod 406c, the inner side of the rotating frame 405 is slidably connected with an inertia block 406d, the outer side of the inertia block 406d is installed with a trigger device, the bottom of the inner side of the rotating frame 405 is fixedly connected with a thin plate 406e, and the bottom of the thin plate 406e is installed with a photoelectric sensor. By setting the rotating ring 401, while the main shaft rotates, the ring 406a pushes the inertia ring 406b on the inner side of the rotating ring 401 to rotate through the pawl, and the inertia block 406d connected to the inertia ring 406b through the swing rod 406c rotates on the inner side of the rotating frame 405. Since the flow rate of the water flow is relatively slow whether it is accelerated or reduced, and if the equipment structure is deformed or the transmission structure is damaged, the speed is reduced. The rotation speed of the spindle is faster, so the follow-up rotating frame 405 will reduce the rotation speed together with the main shaft, while the inertia block 406d and the inertia ring 406b will continue to rotate along the collar 406a. The slopes of the pawls will contact each other and will not form a rigid barrier. Therefore, the movement speed of the inertia block 406d on the inner side of the follow-up rotating frame 405 will be faster than the rotation speed of the follow-up rotating frame 405. By detecting the position change of the inertia block 406d relative to the follow-up rotating frame 405, the change of the spindle speed can be indirectly inferred. When the position of the inertia block 406d changes, the signal received by the photoelectric sensor will change, thereby realizing the detection of rapid changes in the rotation speed. When the water flow causes a relatively stable rotation speed, the pawl on the inner side of the inertia ring 406b will briefly stop contacting the pawl on the outer side of the collar 406a,However, it will not produce a large position deviation, so after the subsequent water flow stabilizes, it will continue to be driven by the ring 406a to rotate synchronously. The inner side of the inertia block 406d is connected to the pulley 10 for rotation. The top of the top pulley 10 contacts the rotating frame 405, and the bottom of the bottom pulley 10 contacts the thin plate 406e. By setting the pulley 10, the inertia block 406d can slide more smoothly inside the rotating frame 405. The thin plate 406e is used to continue to protect the photoelectric sensor at the bottom, and at the same time, it is contacted by the bottom pulley 10 and smoothly displaces the inertia block 406d. The outer side of the empty frame 402 is fixedly connected to the tilting frame 11, and the bottom of the tilting frame 11 is fixedly connected to the support seat 1. The outer side of the outer ring 2 is fixedly connected to the angle frame 12, and the bottom of the angle frame 12 is fixedly connected to the support seat 1. By setting the tilting frame 11 and the angle frame 12, the support seat 1 and the top structure can continue to be stably installed and supported.

[0054] Working principle of this embodiment: when the main shaft rotates normally, the magnetic sheet 402e connected to the trigger rod 402d and the magnetic ring 403 are in a relatively balanced state. If the main shaft vibrates, the magnetic ring 403 connected to it through the rotating ring 401 will also rotate. Therefore, the magnetic sheet 402e and the trigger rod 402d that repel each other will press against the pressure sensor on the outside of the spacer ring 402b to facilitate detection. By setting the rotating ring 401, when the main shaft rotates, the collar 406a pushes the inertia ring 406b on the inner side of the rotating ring 401 to rotate through the pawl, and the inertia block 406d connected to the inertia ring 406b through the swing rod 406c is on the rotating frame 405. , and if the equipment structure is deformed or the transmission structure is damaged, the speed will decrease faster. Therefore, the rotating frame 405 will reduce the speed together with the main shaft, and the inertia block 406d and the inertia ring 406b will continue to rotate along the ring 406a. The slopes of the pawls contact each other and do not form a rigid barrier. Therefore, the inertia block 406d moves faster on the inside of the rotating frame 405 than the rotation speed of the rotating frame 405. By detecting the position change of the inertia block 406d relative to the rotating frame 405, the change of the main shaft speed can be indirectly inferred. When the position of the inertia block 406d changes, the signal received by the photoelectric sensor will change, thereby realizing the detection of rapid changes in rotation speed.

[0055] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make non-creative modifications to the present embodiment as needed. Although the embodiments of the present invention have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A turbine rotor dynamic balance test device based on multi-sensor detection, comprising a support seat (1) installed outside a turbine bearing seat, characterized in that: An outer ring (2) is provided on the top of the support seat (1), a sensor outer frame (3) is movably connected to the inner side of the outer ring (2), and an auxiliary component (4) is provided on the top of the support seat (1); The auxiliary component (4) comprises a rotating ring (401) mounted on the outside of the main shaft of the water turbine and a hollow frame (402) on the outside of the rotating ring (401); a magnetic ring (403) is fixedly connected to the bottom of the outside of the rotating ring (401); a plurality of connecting rods (404) are fixedly connected to the outside of the rotating ring (401); a follow-up rotating frame (405) is fixedly connected to the side of the connecting rod (404) away from the rotating ring (401); and a test structure (406) is provided on the inside of the follow-up rotating frame (405); The sensor outer frame (3) comprises an arc frame (301), a guide rail (302) is installed on the inner side of the arc frame (301), a flat plate (303) is provided on the inner side of the guide rail (302), a side of the flat plate (303) close to the main shaft of the turbine is rotatably connected to a contact wheel (304), a side of the flat plate (303) away from the contact wheel (304) is provided with a sensor bracket (305), a side of the sensor bracket (305) close to the flat plate (303) is provided with a pressure sensor, the inner side of the guide rail (302) is slidably connected to the sensor bracket (305), an adjustment plate (307) is provided on the inner side of the guide rail (302), a side of the adjustment plate (307) close to the sensor bracket (305) is fixedly connected to a connection spring (306), and a side of the connection spring (306) close to the sensor bracket (305) is fixedly connected to the sensor bracket (305); A transmission ring (5) is provided on the inner side of the outer ring (2), a vertical frame (6) is fixedly connected to the inner side of the outer ring (2), a transmission block (7) is slidably connected to the inner side of the vertical frame (6), a side of the transmission block (7) close to the transmission ring (5) is fixedly connected to the transmission ring (5), an extension tube (8) is fixedly connected to the inner side of the transmission ring (5), a side of the extension tube (8) close to the arc frame (301) is rotatably connected to a pressure wheel (9), and a side of the pressure wheel (9) close to the arc frame (301) is in contact with the arc frame (301); since a plurality of sets of arc frames are provided and are pushed synchronously by the transmission ring, the contact wheels on the inner sides of the plurality of guide rails will also synchronously approach or move away from the main shaft.

2. A turbine rotor dynamic balance test device based on multi-sensor detection according to claim 1, characterized in that: The hollow frame (402) comprises a frame body (402a), the frame body (402a) being made of two semi-circular hollow aluminum materials, a spacer ring (402b) being fixedly connected to the inner side of the frame body (402a), a pressure sensor being fixedly connected to the side of the spacer ring (402b) close to the magnetic ring, a hollow ring (402c) being fixedly connected to the inner side of the frame body (402a), a trigger rod (402d) being slidably connected to the inner side of the hollow ring (402c), and the trigger rod (402d) being fixedly connected to the inner side of the hollow ring (402c). 2d) is fixedly connected to a side close to the magnetic attraction ring (403) with a magnetic attraction sheet (402e), a side of the magnetic attraction sheet (402e) close to the magnetic attraction ring (403) and the magnetic attraction ring (403) repel each other, a side of the trigger rod (402d) away from the magnetic attraction sheet (402e) is provided with a protrusion, a tension spring (402f) is sleeved on the outer side of the trigger rod (402d), and two ends of the tension spring (402f) are respectively in contact with the hollow ring (402c) and the protrusion of the trigger rod (402d).

3. The multi-sensor detection-based turbine rotor dynamic balance test device according to claim 1, characterized in that: The test structure (406) comprises a collar (406a) and an inertia ring (406b) which are clamped on the inner side of the rotating ring (401); the inertia ring (406b) is arranged on the outer side of the collar (406a); the inner sides of the inertia ring (406b) and the collar (406a) are both fixedly connected with ratchets made of rubber material; the outer side of the inertia ring (406b) is fixedly connected with a swinging rod (406c); the inner side of the follow-up frame (405) is slidably connected with an inertia block (406d); the outer side of the inertia block (406d) is installed with a trigger device; the bottom of the inner side of the follow-up frame (405) is fixedly connected with a thin plate (406e); and the bottom of the thin plate (406e) is installed with a photoelectric sensor.

4. A turbine rotor dynamic balance test device based on multi-sensor detection according to claim 3, characterized in that: The inner side of the inertia block (406d) is rotatably connected to a pulley (10), the top of the top pulley (10) is in contact with the rotating frame (405), and the bottom of the bottom pulley (10) is in contact with the thin plate (406e).

5. The multi-sensor detection-based turbine rotor dynamic balance test device according to claim 1, characterized in that: The outer side of the hollow frame (402) is fixedly connected to a tilting frame (11), the bottom of the tilting frame (11) is fixedly connected to the support seat (1), the outer side of the outer ring (2) is fixedly connected to a corner frame (12), the bottom of the corner frame (12) is fixedly connected to the support seat (1).

6. The multi-sensor detection-based turbine rotor dynamic balance test device according to claim 1, characterized in that: The outer side of the transmission ring (5) is fixedly connected to a slide frame (13), the outer side of the slide frame (13) is slidably connected to a limit frame (14), and the limit frame (14) is fixedly connected to the outer ring (2) on a side close to the outer ring (2).

7. The multi-sensor detection-based turbine rotor dynamic balance test device according to claim 1, characterized in that: The inner side of the vertical frame (6) is rotatably connected to a transmission screw (15), and a control motor is installed at the bottom of the vertical frame (6), and the output end of the control motor is fixedly connected to the transmission screw (15).

8. The multi-sensor detection-based turbine rotor dynamic balance test device according to claim 1, characterized in that: An integrally formed narrow plate (16) is provided on a side of the guide rail (302) away from the main shaft of the turbine, an adjusting screw rod (17) is threadedly connected to the inner side of the narrow plate (16), and a side of the adjusting screw rod (17) close to the adjusting plate (307) is rotatably connected to the adjusting plate (307).

9. The multi-sensor detection-based turbine rotor dynamic balance test device according to claim 1, characterized in that: The inner side of the guide rail (302) is slidably connected to a cushion block (18), and the inner side of the cushion block (18) is fixedly connected to the flat plate (303).

10. The multi-sensor detection-based turbine rotor dynamic balance test device according to claim 1, characterized in that: An integrally formed rotating frame (19) is provided on the inner side of the outer ring (2); the inner side of the rotating frame (19) is rotatably connected to the arc frame (301); torsion springs (20) are fixedly connected to both sides of the arc frame (301); and the torsion spring (20) is fixedly connected to the rotating frame (19) on one side close to the rotating frame (19).

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