CN219906755U - Automatic plugboard early warning system for hoisting of large-scale hydroelectric generating set rotor - Google Patents

Abstract

The utility model discloses an automatic plugboard early warning system for hoisting a rotor of a large-scale hydroelectric generating set, which comprises an automatic plugboard system and an alignment monitoring system; the plugboard system comprises a supporting mechanism and a moving mechanism; the support mechanism comprises a base, the upper surface of the base is connected with a host in a sliding way, and a power supply, a remote control module, a wireless module and an alarm module are arranged inside the host; one end of the host is connected with a movement mechanism; the alignment monitoring system comprises an overcurrent protection module and a laser alignment system, wherein the overcurrent protection module is arranged inside the host and is electrically connected with the power supply and the remote control module. The system is used for solving the problems that in the existing hoisting and lowering process of the rotor of the hydroelectric generating set, whether the rotor is collided with the inner wall of the stator or not is judged manually by a person, the efficiency is poor, the misjudgment probability is high, and the operation risk of large personnel is present.

Description

Automatic plugboard early warning system for hoisting of large-scale hydroelectric generating set rotor

Technical Field

The utility model belongs to the technical field of maintenance of hydraulic generators, and particularly relates to an automatic plugboard early warning system for hoisting a rotor of a large hydraulic generator set.

Background

The gap between the stator and the rotor of the large-sized hydroelectric generating set is small, the risk of collision, extrusion and the like with the stator exists when the rotor is lifted in and lifted out, and personnel are often required to insert plates between the stator and the rotor for protection and monitoring; the inserting plate method in the prior art is simple, a plurality of operators need to respectively surround a circle around the periphery of the stator, then each operator holds one rope, the bottom end of the rope is tied with an inserting plate, the operators need to continuously draw the rope in the rotor lowering process to pull the inserting plate to slide up and down, and whether the inserting plate is extruded by the rotor and the stator is sensed through the stress condition of hand feeling; for this reason, operators need to climb up and down the stator and climb over the bus bar, so that the safety risks of edge operation and under the suspended objects exist; the method of pulling the plugboard by hands not only has uneven speed, but also is easy to misjudge, and has various problems of untimely alarm feedback and untimely linkage with the crane after alarm; therefore, a rotor hoisting automatic plugboard early warning system of a large-scale hydroelectric generating set needs to be designed to solve the problems.

Disclosure of Invention

The utility model aims to solve the technical problems of poor efficiency, high misjudgment probability and high personnel operation risk of the automatic plugboard, and has the characteristics of automatic plugboard, great labor saving, judgment accuracy enhancement and personnel operation risk avoidance.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the automatic plugboard early warning system for hoisting the rotor of the large-scale hydroelectric generating set comprises an automatic plugboard system and an alignment monitoring system; the automatic flashboard system comprises a plurality of flashboard mechanisms, wherein the flashboard mechanisms are circumferentially connected to the upper surface of the rotor; the plugboard mechanism comprises a supporting mechanism and a moving mechanism; the supporting mechanism comprises a base, and the lower surface of the base is connected with a magnetic sheet which is magnetically connected with the upper surface of the rotor; the upper surface of the base is connected with a host in a sliding way, a power supply, a remote control module, a wireless module and an alarm module are arranged in the host, and the alarm module comprises a three-color indicator lamp and a buzzer; one end of the host is connected with a movement mechanism; the alignment monitoring system comprises an overcurrent protection module and a laser alignment system, wherein the overcurrent protection module is arranged inside the host and is electrically connected with the power supply and the remote control module.

Further, the over-temperature over-current protection module with the model number of LAMBODA brand R-10A is selected as the over-current protection module.

Further, the remote control module selects a singlechip of STM32F103C8T6 model, and the singlechip is matched with the wireless module for remote control; the wireless module selects a WIFI module and a Bluetooth module with the model of HW-297; the power supply is a rechargeable lithium battery;

preferably, the upper surface of the base is of a groove-shaped structure, and the inner wall of the groove-shaped structure is provided with a sliding rail in sliding connection with the host.

Preferably, the side surface of the main machine is connected with a rack, the side surface of the groove-shaped structure is rotationally connected with an adjusting rod, and one end of the adjusting rod positioned in the groove-shaped structure is connected with a gear which is meshed with the rack; one end of the adjusting rod, which is positioned outside the groove-shaped structure, is provided with threads which are in threaded connection with the locking nut.

Further, the adjusting rod is rotatably connected with the groove-shaped structure through a bearing.

Preferably, the motion mechanism comprises a support connected with one end of the host machine, the upper surface of the support is connected with a direct current motor, the output end of the direct current motor is connected with a winding roll, and the surface of the winding roll is wound with a rigid rope.

Further, the direct current motor is provided with a motor forward and backward rotation driving control module with the model of RYC-FB001, and the motor forward and backward rotation driving control module is electrically connected with the remote control module.

Preferably, a telescopic rod is connected to one side surface of the support, a U-shaped frame is connected to the end part of the telescopic rod, and a fixed pulley is rotatably connected to the inner wall of the U-shaped frame; the other end of the rigid rope bypasses the upper surface of the fixed pulley and is connected with the plugboard.

Further, the telescopic link is the sleeve pipe structure that hollow square pipe pegged graft and forms, and equidistant jack has been seted up to sleeve pipe structure side surface, and the jack is fixed through the bolt.

Preferably, the plugboard is in sliding connection with the strip-shaped clamping groove, and the back side of the clamping groove is connected with a magnet which is in magnetic attraction connection with the side surface of the rotor; the two sides of the inner wall of the clamping groove are provided with strip-shaped sliding grooves which are in sliding connection with the plugboard, and the side surface of the plugboard is connected with strip-shaped sliding blocks which are matched with the sliding grooves.

Preferably, the bottom of the clamping groove is connected with a spring, and the spring is connected with the bottom of the plugboard through an elastic rope; the top and the bottom of the plugboard are connected with hooks which are connected with rigid ropes or elastic ropes in a hanging mode.

Preferably, the laser alignment system comprises a plurality of laser ranging sensors; the laser ranging sensors are connected to the end parts of the telescopic rods at the front sides of the plugboard mechanisms, the illumination directions of the laser ranging sensors are vertical downward, and the front ends of the plugboard mechanisms are connected with one laser ranging sensor; the laser ranging sensors are electrically connected with a remote control module in the host; a plurality of laser rangefinder sensors are annular illumination array, cooperate with the target mechanism of below.

Further, the laser ranging sensor is preferably a Kellett TLS-01C laser ranging sensor, which can detect a vertical or inclined object within a distance of 30m without being affected by color, material or glossiness.

Preferably, the target mechanism comprises a target ring with an annular structure, the upper surface of the target ring is a horizontal plane of the annular structure, and the side surfaces of the target ring are all slope-shaped conical surface structures.

Further, the inclination of the target ring side surface is less than 30 degrees.

Further, the side surface of the target ring is connected with at least three threaded telescopic rods, and the end parts of the threaded telescopic rods are connected with rubber gaskets.

The beneficial effects of the utility model are as follows:

the system greatly reduces the number of operators, and the operation is not needed by a plurality of operators to hold the operation during the operation of the plugboard; the operation safety is improved, a manual board inserting mode is replaced by a board inserting mechanism when the rotor is hung in and out, the safety risks of the personnel on the upper and lower stators, the side operation at the position of the bus bar and the safety risks below the hung object are avoided, the safety risk problem of the working environment of the personnel is solved, and the rotor hanging work can be completed without the need of the manual board inserting; the operation time is greatly shortened, the rotor is lifted out for about 50 artificial days in the original working mode, and only 4 artificial days are needed by the method, so that the manpower resource single item is saved by 92%; by aligning the monitoring system, the paralytic significance of operators during manual insertion can be avoided, the interference of human experience factors is reduced, and the rotor hoisting process is safer, more stable and more reliable; the alignment monitoring system can also provide real-time data of the offset and the offset direction through data calculation, so that the lifting equipment can accurately correct the callback, the risk of collision caused by callback is avoided, and the time required for correcting errors is shortened.

Drawings

FIG. 1 is an overall schematic view of a hoist according to the present utility model;

FIG. 2 is a schematic front view of the present utility model in hoisting;

FIG. 3 is a schematic front view of the fork strap section of the present utility model;

FIG. 4 is a schematic view of a supporting mechanism according to the present utility model;

FIG. 5 is a schematic front view of the supporting mechanism of the present utility model;

FIG. 6 is a schematic side view of the support mechanism of the present utility model;

FIG. 7 is a schematic view of a movement mechanism according to the present utility model;

FIG. 8 is a schematic diagram of a target mechanism according to the present utility model;

FIG. 9 is a schematic diagram of a host according to the present utility model;

in the figure: the magnetic disk type magnetic disk drive comprises a plug board mechanism 1, a rotor 11, a base 12, a groove-shaped structure 121, a magnetic disk 13, a host 14, a support 141, a direct current motor 142, a telescopic rod 143, a U-shaped frame 144, a fixed pulley 145, a winding roll 146, a rigid rope 147, a rack 15, an adjusting rod 16, a gear 17, a locking nut 18, a plug board 2, a clamping groove 21, a spring 22, an elastic rope 23, a laser ranging sensor 31, a target ring 32, a power supply 4, a remote control module 5, a wireless module 6, an alarm module 7 and a terminal device 8.

Detailed Description

Example 1:

as shown in fig. 1-9, an automatic plugboard early warning system for hoisting a rotor of a large-sized hydroelectric generating set comprises an automatic plugboard 2 system and an alignment monitoring system; the automatic plugboard 2 system comprises a plurality of plugboard mechanisms 1, wherein the plugboard mechanisms 1 are circumferentially connected to the upper surface of a rotor 11; the plugboard mechanism 1 comprises a supporting mechanism and a moving mechanism; the supporting mechanism comprises a base 12, and the lower surface of the base 12 is connected with a magnetic sheet 13 which is magnetically connected with the upper surface of the rotor 11; the upper surface of the base 12 is connected with a host 14 in a sliding way, a power supply 4, a remote control module 5, a wireless module 6 and an alarm module 7 are arranged in the host 14, and the alarm module 7 comprises a three-color indicator lamp and a buzzer; one end of the host 14 is connected with a motion mechanism; the alignment monitoring system comprises an overcurrent protection module and a laser alignment system, wherein the overcurrent protection module is arranged inside the host 14 and is electrically connected with the power supply 4 and the remote control module 5.

Further, the over-temperature over-current protection module with the model number of LAMBODA brand R-10A is selected as the over-current protection module.

Further, the remote control module 5 selects a singlechip of STM32F103C8T6 model, and the singlechip is matched with the wireless module 6 for remote control; the wireless module 6 selects a WIFI module and a Bluetooth module with the model HW-297; the power supply 4 is a rechargeable lithium battery;

preferably, the upper surface of the base 12 is a groove-shaped structure 121, and a sliding rail is provided on the inner wall of the groove-shaped structure 121 and slidably connected with the host 14.

Preferably, the side surface of the main machine 14 is connected with a rack 15, the side surface of the groove-shaped structure 121 is rotatably connected with an adjusting rod 16, and one end of the adjusting rod 16 positioned in the groove-shaped structure 121 is connected with a gear 17 in meshed fit with the rack 15; one end of the adjusting rod 16, which is positioned outside the groove-shaped structure 121, is provided with threads and is in threaded connection with the locking nut 18.

Further, the adjusting lever 16 is rotatably connected to the groove-like structure 121 via a bearing.

Preferably, the motion mechanism comprises a support 141 connected with one end of the host 14, a direct current motor 142 is connected to the upper surface of the support 141, a winding roll 146 is connected to the output end of the direct current motor 142, and a rigid rope 147 is wound on the surface of the winding roll 146.

Further, the DC motor 142 is provided with a motor forward and reverse rotation driving control module with the model RYC-FB001, and the motor forward and reverse rotation driving control module is electrically connected with the remote control module 5.

Preferably, a telescopic rod 143 is connected to one side surface of the support 141, a U-shaped frame 144 is connected to the end part of the telescopic rod 143, and a fixed pulley 145 is rotatably connected to the inner wall of the U-shaped frame 144; the other end of the rigid rope 147 is connected with the plugboard 2 by winding around the upper surface of the fixed pulley 145.

Further, the telescopic rod 143 is a sleeve structure formed by inserting hollow square tubes, equidistant jacks are formed in the side surface of the sleeve structure, and the jacks are fixed through bolts.

Preferably, the plugboard 2 is in sliding connection with a strip-shaped clamping groove 21, and the back side of the clamping groove 21 is connected with a magnet which is in magnetic attraction connection with the side surface of the rotor 11; the two sides of the inner wall of the clamping groove 21 are provided with strip-shaped sliding grooves which are in sliding connection with the plugboard 2, and the side surface of the plugboard 2 is connected with strip-shaped sliding blocks which are matched with the sliding grooves.

Preferably, the bottom of the clamping groove 21 is connected with a spring 22, and the spring 22 is connected with the bottom of the plugboard 2 through an elastic rope 23; the top and bottom of the plugboard 2 are connected with hooks which are connected with a rigid rope 147 or an elastic rope 23 in a hanging way.

Preferably, the laser alignment system includes a plurality of laser ranging sensors 31; the laser ranging sensors 31 are connected to the end parts of the telescopic rods 143 on the front sides of the plugboard mechanisms 1, the illumination directions of the laser ranging sensors 31 are vertically downward, and the front end of each plugboard mechanism 1 is connected with one laser ranging sensor 31; the laser ranging sensors 31 are electrically connected with the remote control module 5 inside the host 14; a plurality of laser ranging sensors 31 form an annular illumination array, which cooperates with the underlying target mechanism.

Further, the laser ranging sensor 31 is preferably a Kellett TLS-01C laser ranging sensor 31, which can detect a vertical or inclined object within a distance of 30m without being affected by color, material or glossiness.

Preferably, the target mechanism comprises a target ring 32 with an annular structure, the upper surface of the target ring 32 is a horizontal plane of the annular structure, and the side surfaces of the target ring 32 are all in a slope conical surface structure.

Further, the inclination of the target 32 side surface is less than 30 degrees.

Further, the side surface of the target ring 32 is connected with at least three threaded telescopic rods 143, and the end parts of the threaded telescopic rods 143 are connected with rubber pads.

Example 2:

the early warning method of the automatic plugboard early warning system for hoisting the rotor of the large-sized hydroelectric generating set comprises the following steps:

s1, selecting a plurality of plugboard mechanisms 1 according to specific requirements of hoisting construction of a rotor 11; a plane coordinate system is established by taking the center of a rotor 11 as an origin, a plurality of plugboard mechanisms 1 are numbered 1-n, and each numbered corresponds to a specific azimuth angle;

s2, a plurality of plugboard mechanisms 1 are arranged on the upper surface of a rotor 11 at equal intervals, and are magnetically connected with the rotor 11 through magnetic sheets 13 of a supporting mechanism;

s3, fixing the target ring 32 below the stator, so that the circle center of the target ring 32 coincides with the circle center of the stator; the inner diameter of the target ring 32 is larger than the outer diameter of the rotor 11;

s4, calibrating a laser alignment mechanism:

s401, starting a laser ranging sensor 31; the length of the telescopic rod 143 at the end part of the plugboard mechanism 1 is adjusted, so that the light spot of each laser ranging sensor 31 falls on the horizontal plane of the annular structure on the upper surface of the target ring 32;

s402, adjusting the position of each host 14: loosening the lock nut 18, screwing the adjusting rod 16 to enable the gear 17 to be matched with the rack 15, driving the host 14 to finely adjust and slide forwards along the base 12, and enabling the light spots of all the laser ranging sensors 31 to be the same circle; recording an initial ranging value h of the laser ranging sensor 31 at this time;

s5, sequentially adsorbing clamping grooves 21 on the side surface of the rotor 11 right below the laser ranging sensor 31, wherein each clamping groove 21 is arranged in parallel with the axial direction of the rotor 11; then the plugboard 2 is connected with the clamping groove 21 in a sliding way through a sliding groove structure, the top of the plugboard 2 is connected with the rigid rope 147 in a hanging way, and the bottom of the plugboard 2 is connected with the elastic rope 23 in a hanging way;

s6, starting a direct current motor 142, wherein the direct current motor 142 is provided with a forward and reverse rotation control module, and periodic forward and reverse rotation is performed according to preset frequency, so that the insert plate 2 is pulled to ascend through the rigid rope 147, then the rigid rope 147 is loosened, the insert plate 2 is pulled to descend by the elastic rope 23 and the spring 22, and the insert plate 2 is made to reciprocate up and down in the clamping groove 21;

s7, lowering the rotor 11 through lifting equipment to perform early warning:

s701, in the lowering process, the three-color indicator light indicates the running state: when the green light is on during normal operation, the yellow light is on when the power supply is not on, and the red light is on when the deviation occurs;

s702, the plugboard 2 reciprocates between the gap between the rotor 11 and the stator, when the gap between the stator and the rotor 11 is too small, the plugboard 2 is extruded by the stator and the rotor 11, so that the load pulled by the direct current motor 142 is instantaneously increased, the instantaneous current is rapidly increased to exceed the set maximum value, at the moment, the overcurrent protection module starts overcurrent protection, the alarm module 7 is driven to carry out red light alarm, and the alarm is sounded through the buzzer;

s703, when the offset occurs, the light spot irradiated downward by part of the laser ranging sensor 31 moves outside the annular horizontal plane of the target ring 32 and falls on the conical surface outside the target ring 32; at the moment, the host 14 drives the alarm module 7 to alarm by a red light, and the buzzer gives out an audible alarm;

s8, after the offset occurs, data calculation and correction are carried out on the positive monitoring system:

s801, when the rotor 11 deflects towards a certain direction, the plugboard 2 in the corresponding direction is monitored to be extruded, so that the plugboard mechanism 1 with the mark starts an overcurrent protection module, the azimuth angle alpha corresponding to the mark m of the plugboard mechanism 1 is obtained, and the direction (alpha+180 DEG) is positioned as a callback correction direction;

s802, obtaining distance measurement data h1 corresponding to the laser distance measurement sensor 31 with the reference number m, obtaining a distance h2 of the crane, and calculating a standard height h3=h-h 2 when the laser distance measurement sensor 31 is not deviated; calculating a height difference Δh=h1-h 3; then calculating the offset x according to a tangent function through the angle beta of the known target ring 32 inclined plane; setting x as a callback correction distance;

s803, the lifting equipment is scheduled to be adjusted through the calculated data, so that the rotor 11 moves a callback correction distance towards a callback correction direction, and therefore quick correction is completed, and overfall and re-collision are avoided;

s9, the remote control module 5 is in communication connection with the terminal equipment 8 through the wireless module 6, an operator checks all parameter data in the hoisting process through the terminal equipment 8, and the remote control module 5 controls the reset and start-stop of related equipment of the host 14.

Further, in step S702, according to the formula p=fv; when p=ui, fv=ui is obtained, and the voltage is stable and the speed is stable, if the board 2 is pressed, the load increases rapidly, and F increases, so the current I also increases, exceeding the overcurrent protection setting value, the overcurrent protection is operated at this time, and the device stops operating.

The above embodiments are merely preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the embodiments and features of the embodiments of the present utility model may be arbitrarily combined with each other without collision. The protection scope of the present utility model is defined by the claims, and the protection scope includes equivalent alternatives to the technical features of the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (8)

1. Automatic picture peg early warning system of large-scale hydroelectric set rotor hoist and mount, its characterized in that: the system comprises an automatic plugboard system and an alignment monitoring system; the automatic flashboard system comprises a plurality of flashboard mechanisms (1), wherein the flashboard mechanisms (1) are circumferentially connected to the upper surface of the rotor (11); the plugboard mechanism (1) comprises a supporting mechanism and a moving mechanism; the supporting mechanism comprises a base (12), and the lower surface of the base (12) is connected with a magnetic sheet (13) which is magnetically connected with the upper surface of the rotor (11); the upper surface of the base (12) is connected with a host (14) in a sliding manner, a power supply (4), a remote control module (5), a wireless module (6) and an alarm module (7) are arranged in the host (14), and the alarm module comprises a three-color indicator lamp and a buzzer; one end of the host (14) is connected with a movement mechanism; the alignment monitoring system comprises an overcurrent protection module and a laser alignment system, wherein the overcurrent protection module is arranged in the host (14) and is electrically connected with the power supply and the remote control module; the upper surface of the base (12) is a groove-shaped structure (121), and a sliding rail is arranged on the inner wall of the groove-shaped structure (121) and is in sliding connection with the host machine (14).

2. The large-scale hydro-generator set rotor hoisting automatic plugboard early warning system according to claim 1, wherein: the side surface of the host machine (14) is connected with a rack (15), the side surface of the groove-shaped structure (121) is rotationally connected with an adjusting rod (16), and one end of the adjusting rod (16) positioned in the groove-shaped structure (121) is connected with a gear (17) in meshed fit with the rack (15); one end of the adjusting rod (16) positioned outside the groove-shaped structure (121) is provided with threads which are in threaded connection with the locking nut (18).

3. The large-scale hydro-generator set rotor hoisting automatic plugboard early warning system according to claim 1, wherein: the motion mechanism comprises a support (141) connected with one end of a host machine (14), the upper surface of the support (141) is connected with a direct current motor (142), the output end of the direct current motor (142) is connected with a winding roll (146), and a rigid rope (147) is wound on the surface of the winding roll (146).

4. The automatic plugboard early warning system for hoisting of large-scale hydroelectric generating set rotor according to claim 3, wherein: a telescopic rod (143) is connected to one side surface of the support (141), a U-shaped frame (144) is connected to the end part of the telescopic rod (143), and a fixed pulley (145) is rotatably connected to the inner wall of the U-shaped frame (144); the other end of the rigid rope (147) bypasses the upper surface of the fixed pulley (145) and is connected with the plugboard (2).

5. The automatic plugboard early warning system for hoisting of a large-scale hydroelectric generating set rotor according to claim 4, wherein the system is characterized in that: the inserting plate (2) is in sliding connection with the strip-shaped clamping groove (21), and the back side of the clamping groove (21) is connected with a magnet which is in magnetic attraction connection with the side surface of the rotor (11); the two sides of the inner wall of the clamping groove (21) are provided with strip-shaped sliding grooves which are in sliding connection with the plugboard (2), and the side surface of the plugboard (2) is connected with strip-shaped sliding blocks which are matched with the sliding grooves.

6. The automatic plugboard early warning system for hoisting of a large-scale hydroelectric generating set rotor according to claim 5, wherein the system is characterized in that: the bottom of the clamping groove (21) is connected with a spring (22), and the spring (22) is connected with the bottom of the plugboard (2) through an elastic rope (23); the top and the bottom of the plugboard (2) are connected with a hook which is connected with a rigid rope (147) or an elastic rope (23).

7. The large-scale hydro-generator set rotor hoisting automatic plugboard early warning system according to claim 1, wherein: the laser alignment system comprises a plurality of laser ranging sensors (31); the laser ranging sensors (31) are connected to the end parts of the telescopic rods (143) at the front sides of the plugboard mechanisms (1), the illumination directions of the laser ranging sensors (31) are vertically downward, and the front end of each plugboard mechanism (1) is connected with one laser ranging sensor (31); the laser ranging sensors (31) are electrically connected with a remote control module in the host (14); a plurality of laser ranging sensors (31) form an annular illumination array and are matched with a target mechanism below.

8. The large-scale hydro-generator set rotor hoisting automatic plugboard early warning system according to claim 7, wherein: the target mechanism comprises a target ring (32) with an annular structure, the upper surface of the target ring (32) is a horizontal plane with the annular structure, and the side surfaces of the target ring (32) are all of slope-shaped conical surface structures.