CN114856900B - Axis adjustment auxiliary device and method for hydroelectric generating set - Google Patents
Axis adjustment auxiliary device and method for hydroelectric generating set Download PDFInfo
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- CN114856900B CN114856900B CN202210430639.8A CN202210430639A CN114856900B CN 114856900 B CN114856900 B CN 114856900B CN 202210430639 A CN202210430639 A CN 202210430639A CN 114856900 B CN114856900 B CN 114856900B
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- 238000000034 method Methods 0.000 title claims abstract description 82
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/005—Starting, also of pump-turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
Abstract
The invention relates to the technical field of maintenance of hydroelectric generating sets, in particular to an axis adjustment auxiliary device and an axis adjustment auxiliary method of a hydroelectric generating set, wherein the auxiliary device comprises a server, the server calculates the maximum relative swing value of each preset part of the hydroelectric generating set according to single-side swing value data, judges whether the maximum relative swing value of any preset part is greater than a preset standard threshold corresponding to the preset part, if so, processes all net full swing values corresponding to the preset part by utilizing a multi-point interpolation method, and calculates the actual maximum net full swing value corresponding to the preset part until all actual maximum net full swing values are obtained; and determining the abnormal point position of the preset part corresponding to the actual maximum net full-swing value according to any actual maximum net full-swing value until all abnormal point positions are determined, so that a user can accurately adjust the axis of the main shaft of the water turbine generator set according to all abnormal point positions, and the efficiency is high.
Description
Technical Field
The invention relates to the technical field of maintenance of hydroelectric generating sets, in particular to an axis adjustment auxiliary device and method of a hydroelectric generating set.
Background
Hydroelectric generating set: the water turbine is used as a prime motor to convert water energy into electric energy. When the water flow passes through the water turbine, the water energy is converted into mechanical energy, the rotating shaft of the water turbine drives the rotor of the generator, and the mechanical energy is converted into electric energy to be output. Is the main power equipment for generating electric energy in hydropower stations.
And (3) turning: when the hydroelectric generating set is installed, the hydraulic turbine and the generator rotating part are slowly rotated by external force, so that the main shaft swing degree of the hydroelectric generating set is measured, and the axis of the main shaft of the hydroelectric generating set is adjusted. In the hydroelectric generating set, a generator rotor and a turbine runner are connected through a plurality of sections of large shafts, the large shafts are required to rotate for one circle through external force, so that deviation between the actual center and the theoretical center of an axis is determined, and the deviation is adjusted according to measurement data. If not adjusted, the deviation is amplified by the extension of the axis beyond the regulatory standard and affects the performance of the hydro-generator set. It is often necessary to rotate multiple times to find the best centering condition as possible.
The jigger work is a necessary procedure for measuring and adjusting the axis of the hydroelectric generating set, the inclination and the tortuosity of the axis of the set can be mastered through jigger, whether the quality of the axis is qualified or not is judged, and a basis is provided for axis processing and adjustment.
At present, the data of a plurality of positions at the parts of a thrust head, a mirror plate and the like of a water turbine unit are often measured by using a mechanical dial indicator, and the process of searching the maximum padding position is as follows: the maximum relative swing value is obtained by utilizing data acquired by a mechanical dial indicator and manually calculating a drawn sinogram or a CAD graph, and finally, the axis of the host machine is adjusted according to the experience of workers, so that the technical problems of low precision and low efficiency exist.
Disclosure of Invention
The invention aims to solve the technical problem of providing an axis adjustment auxiliary device and an axis adjustment auxiliary method for a hydroelectric generating set aiming at the defects of the prior art.
The server is used for:
calculating a maximum relative yaw value at each preset part of the hydro-generator set according to the unilateral yaw value data, wherein the unilateral yaw value data comprises: a single-sided throw value for each preset position at each preset part;
judging whether the maximum relative swing degree value of any preset part is larger than a preset standard threshold value corresponding to the preset part, if so, processing all net full swing degree values corresponding to the preset part by utilizing a multi-point interpolation method, and calculating the actual maximum net full swing degree value corresponding to the preset part until all the actual maximum net full swing degree values are obtained;
And determining an abnormal point position at a preset part corresponding to the actual maximum net full-swing value according to any actual maximum net full-swing value until all abnormal point positions are determined, so that a user can adjust the axis of the main shaft of the hydroelectric generating set according to all abnormal point positions.
The axis adjustment auxiliary device of the hydroelectric generating set has the following beneficial effects:
on the one hand, the preset part with the abnormal point position can be rapidly determined by judging the maximum relative swing value, on the other hand, in the actual work, the optimal axis adjustment position cannot be determined often according to the fact that the maximum net full swing value at the preset part is not the true maximum net full swing value, all net full swing values corresponding to the preset part are processed by utilizing a multi-point interpolation method, the actual maximum net full swing value of the preset part with the abnormal point position can be determined, all abnormal point positions are further determined, and the accurate adjustment of the axis of the main shaft of the hydroelectric generating set by a user is facilitated, and the efficiency is high.
The technical scheme of the axis adjustment auxiliary method of the hydroelectric generating set is as follows:
The server calculates a maximum relative swing value at each preset part of the hydroelectric generating set according to the unilateral swing value data, wherein the unilateral swing value data comprises: a single-sided throw value for each preset position at each preset part;
the server judges whether the maximum relative swing value of any preset part is larger than a preset standard threshold value corresponding to the preset part, if yes, the server processes all net full swing values corresponding to the preset part by utilizing a multipoint interpolation method, and calculates the actual maximum net full swing value corresponding to the preset part until all the actual maximum net full swing values are obtained;
and the server determines the abnormal point position of the preset part corresponding to the actual maximum net full-swing value according to any actual maximum net full-swing value until all abnormal point positions are determined, so that a user adjusts the axis of the main shaft of the water turbine generator set according to all abnormal point positions.
The axis adjustment auxiliary method of the hydroelectric generating set has the following beneficial effects:
on the one hand, the preset part with the abnormal point position can be rapidly determined by judging the maximum relative swing value, on the other hand, in the actual work, the optimal axis adjustment position cannot be determined often according to the fact that the maximum net full swing value at the preset part is not the true maximum net full swing value, all net full swing values corresponding to the preset part are processed by utilizing a multi-point interpolation method, the actual maximum net full swing value of the preset part with the abnormal point position can be determined, all abnormal point positions are further determined, and the accurate adjustment of the axis of the main shaft of the hydroelectric generating set by a user is facilitated, and the efficiency is high.
Drawings
Fig. 1 is a schematic structural diagram of an axis adjustment auxiliary device of a hydro-generator set according to an embodiment of the present invention;
FIG. 2 is a graph of net full throw at the thrust collar, at the upper pilot, at the flange, at the water pilot;
FIG. 3 is a schematic diagram of a broken line relationship between a distance of a preset part relative to a limit bearing and half of a net full-swing value of a split number at the preset part.
Fig. 4 is a schematic structural view of a spindle forward and reverse rotation control device;
FIG. 5 is a schematic diagram of the structure of the identification device;
FIG. 6 is a schematic diagram of a multi-point data automatic acquisition device;
FIG. 7 is a view of a crew type selection module;
FIG. 8 is a system main window view;
FIG. 9 is a view of a data analysis module;
FIG. 10 is a control view of the wireless dial indicator control software;
FIG. 11 is a setup view of the wireless dial indicator management software;
fig. 12 is a schematic flow chart of an axis adjustment assisting device of a hydro-generator set according to an embodiment of the invention.
Detailed Description
As shown in fig. 1, an axis adjustment auxiliary device for a hydroelectric generating set according to an embodiment of the present invention includes a server, where the server is configured to:
calculating a maximum relative yaw value at each preset part of the hydro-generator set according to the unilateral yaw value data, wherein the unilateral yaw value data comprises: a single-sided throw value for each preset position at each preset part;
The preset components can be components such as a thrust head, a mirror plate, an upper guide shoe, a main shaft, a stator, a rotor, a lower guide shoe, a flange, a water guide shoe or a rotating wheel of the water turbine unit. Taking a flange as an example, the process of acquiring the "single-sided yaw value of each preset position at each preset part" will be described specifically:
the center of any axial cross section of the flange is used as an origin, 360 degrees are equally divided into 8 ranges, a preset position is arranged on the boundary line of each two adjacent ranges, 8 preset positions are provided, a dial indicator is arranged at each preset position, and the unilateral swing degree value of each preset position of the flange is obtained through the dial indicator.
The process of obtaining the maximum relative-throw value at each preset part will be described, specifically:
firstly, obtaining a net swing degree value of any preset position of any preset part according to the single-side swing degree value of the preset position of the preset part, and specifically:
1) Single-sided throw value:
in the running process of the main shaft of the hydroelectric generating set, as the axis of the main shaft is not coincident with the rotation center line of the main shaft, a conical movement track is formed along the direction of the rotation center line, if the circumference of the cross section of the main shaft is equally divided into a plurality of points, generally 8 equal parts, 8 preset positions are provided, a dividing number is set for each preset position, 8 dividing numbers are provided, the positions of the dividing numbers at each preset part are in one-to-one correspondence, for example, the position of the dividing number of the flange is vertically corresponding to the position of the dividing number of the upper guide part, namely, the positions of the dividing numbers of the upper guide part are in the same longitudinal direction. The dial indicator is arranged at the position of each minute number, the reading of the dial indicator is a unilateral swing degree value, called swing degree for short, and the sign is generally used Is indicated and in->The lower right corner of (1) is marked with a preset part and a split number for distinguishing. For example:
the axis measuring parts of the suspended hydroelectric generating set, i.e. the preset parts, are usually a thrust head (represented by a), an upper guide (represented by b), a flange (represented by c) and a water guide (represented by d), and each measuring part, i.e. the preset part, equally divides the main shaft into 8 points along the circumference, i.e. 1-8 dividing numbers, for example,a single-sided swing value representing the upper lead index number 1; />One-sided wobble value representing flange index number 3 +.>The single-sided swing value of the water guide division number 5 is shown.
2) Net swing value:
when the jigger drives the main shaft to operate, the axis translates in the clearance range of the limiting bearing (the suspended hydroelectric generating set is an upper guide bearing), and if the upper guide is arranged on the thrust head, the swing degree value measured at the upper guide is actually the translation value of the main shaft. Considering the rotating part of the unit as a rigid body, the other measuring parts translate the same. I.e. the above-mentioned translational values are contained in the single-sided yaw values measured at other measuring points of the spindle. The difference between the single-side swing value of the same split number at a certain measuring position of the main shaft and the limit bearing is called the net swing value of the split number, which is used in the following way The right lower corner of (1) is marked with an upper measuring part, a limit bearing and a split number thereof. Examples are as follows:
wherein (1)>Net swing value of flange index number 1, < ->The net swing value of water guide division number 2 is shown.
Then, according to the net swing degree values of all preset positions of any preset part, obtaining the net full swing degree value of the preset part, specifically:
the difference of the net swinging degree of a certain measuring part of the main shaft, namely a preset part, corresponding to two minutes of numbers in a certain diameter direction is called the net full swinging degree of the main shaft in the measuring part, namely the preset part in the diameter direction. Is used inThe lower right corner is marked with an upper measuring part, a limit bearing and a diameter direction thereof. For example, a->A net full-swing value representing the flange diameter in the direction of 1-5;the net full swing value in the direction of 2-6 of the water guide diameter is shown.
The net full-throw value is also a vector, which points to the split number with the larger one-sided throw in a certain diameter direction, and is exemplified as follows:
the number of net full-swing values on one measuring part of the main shaft, namely the preset part, is half of the number of split positions, and if the measuring part, namely the preset part, is equally divided into 8 split positions, 4 radial directions are 1-5, 2-4, 3-7 and 4-8, 4 net full-swing values can be calculated. Where a certain orientation must exhibit the maximum relative yaw value.
Finally, the maximum relative runout value at the preset part is calculated, in particular:
relative throw value refers to: any measuring part of the main shaft is pre-arrangedThe ratio of the net full-swing value of a certain diameter direction of the component to the axial length of the position from the center of the limit bearing to the measuring position, namely the position of the preset component, is called the relative swing value of the main shaft in the measuring position, namely the preset component and the diameter direction. In practice, the relative swing degree refers to a maximum relative swing degree value, and a calculation formula of the maximum relative swing degree value is as follows:wherein (1)>The maximum relative runout value at the flange is expressed in units of: mm/m->The maximum relative swing value of the water guide is expressed in units: mm/m->The maximum net full throw value at the flange, in units: mm (mm)/(mm)>The maximum net full throw value at the water guide, in units: mm; l (L) bc Indicating the axial length of the upper guide flange, L bd Indicating the axial length of the upper lead to the water guide. Units: m.
For any measuring part, namely a preset part, only one maximum relative swing value exists, and the aim of calculating the maximum relative swing value of the main shaft is to: judging whether the maximum relative swing value of any preset part is within the range of the technical specification standard value of the preset part, namely judging whether the maximum relative swing value of any preset part is larger than the corresponding preset standard threshold value of the preset part, and judging whether the axis of the unit is qualified if the maximum relative swing value of all preset parts is within the range of the corresponding technical specification standard value. Therefore, the method is an important mark for measuring the axis quality of a unit.
However, if the maximum relative swing value of the preset part is not within the range of the corresponding technical specification standard value, that is, the maximum relative swing value of the preset part is greater than the corresponding preset standard threshold value of the preset part, it can be determined that the abnormal point position exists at the preset part, so that the calculation efficiency is improved.
That is, whether the maximum relative swing value of any preset part is larger than the corresponding preset standard threshold value of the preset part is judged, if yes, all the net full swing values corresponding to the preset part are processed by utilizing a multi-point interpolation method, the actual maximum net full swing value corresponding to the preset part is calculated, if no, the position of an abnormal point does not exist at the preset part, and the technical specification standard is met.
The maximum relative swing value at each preset part is calculated according to the maximum relative swing value calculation formula, and a flange is taken as an example for explanation, specifically:
and calculating the maximum relative swing value at the flange according to the maximum relative swing value calculation formula, judging whether the maximum relative swing value at the flange is greater than a preset standard threshold corresponding to the flange, if so, processing all net full swing values corresponding to the preset part by using a multi-point interpolation method, and calculating the actual maximum net full swing value at the flange. Taking the net full throw value corresponding to the flange in fig. 2 as an example, the following description will be given:
And (3) performing difference on the fitted curve of the net full-swing value of each position point of the flange by utilizing a multipoint interpolation method to obtain an actual maximum net full-swing value corresponding to the flange, thereby obtaining the net full-swing value at the left position of the flange with the dividing number of 6, namely the actual maximum net full-swing value corresponding to the flange.
The net full-swing curve graph is drawn and generated by the position dividing number of the measuring part and the net full-swing value, and the axis graph is drawn and generated by the net full-swing value and the relative limit bearing distance. The multi-source data chart visualization method based on the component technology integrates the complex calculation process and the chart drawing process, and the calculation result can be filled into a chart interface at one time to quickly generate a net full-swing curve chart and an axial line chart. The generated modular data visualization graphs are shown in fig. 2 and 3. Fig. 3 may also be referred to as an axis map, in which point data is explained as follows:
for example, (4, -8.05) in FIG. 3 has the meaning: "4" represents half the net full swing value of a quantile number, "-8.05" represents: the distance between the preset parts and the limit bearing is obtained by the distance between the preset parts and the limit bearing, and the broken line relation between the distance between the preset parts and the limit bearing and the half of the net full-swing value of the split number of the preset parts is obtained.
By observing the net full-swing curve graph, namely fig. 2, the maximum net full-swing value of any split number of each preset part can be obtained, the maximum relative swing value is calculated, and if the maximum relative swing value exceeds the rule standard, the processed azimuth is required to be further calculated. However, in actual practice, the split number determined from the measured maximum net full throw value at the predetermined part is often not the optimal axis adjustment position, and it is necessary to find the optimal axis adjustment position through manual experience or CAD drawing. As can be seen from the observation of the net full-swing graph, i.e. fig. 2, the calculated maximum relative swing value at the flange is determined as No. 6, but the maximum relative swing value displayed by the actual graph should be at the position on the left side of the No. 6 point, i.e. the main shaft of the unit is at a certain angle clockwise with the No. 6 split. In order to solve the problem, the method for identifying the maximum abnormal position number of the axis of the multipoint interpolation is as follows:
and determining an abnormal point position at a preset part corresponding to the actual maximum net full-swing value according to any actual maximum net full-swing value until all abnormal point positions are determined, so that a user can adjust the axis of the main shaft of the water-turbine generator set according to all abnormal point positions. Specifically:
For example, after obtaining the actual maximum net full-swing value at the flange, obtaining the degree of 45 degrees between two adjacent dividing points, if the interpolation is carried out on 20 points, the degree is equal to 45 degrees, so that the abscissa corresponding to the actual maximum net full-swing value can be determined, further, the abnormal point position at the flange can be determined, similarly, all abnormal point positions are obtained, and a user can adjust the axis of the main shaft of the hydroelectric generating set according to all the abnormal point positions.
The axis adjustment specifically means: the non-verticality and the azimuth of the main shaft of the generator and the main shaft of the water turbine are calculated according to the jigger data of the unit, and if the non-verticality and the azimuth exceed the rule standard, the azimuth and the magnitude of the processing are required to be further calculated. The adjustment of the axis of the main shaft of the hydroelectric generating set is realized in the following way: one is to remove the superfluous metal on the joint surface of a certain part, and the method comprises scraping, acid corrosion and the like; another approach is to add a stepped pad or wedge pad to the relative orientation of the former.
On the one hand, the preset part with the abnormal point position can be rapidly determined by judging the maximum relative swing value, on the other hand, in the actual work, the optimal axis adjustment position cannot be determined often according to the fact that the maximum net full swing value at the preset part is not the true maximum net full swing value, all net full swing values corresponding to the preset part are processed by utilizing a multi-point interpolation method, the actual maximum net full swing value of the preset part with the abnormal point position can be determined, all abnormal point positions are further determined, and the accurate adjustment of the axis of the main shaft of the hydroelectric generating set by a user is facilitated, and the efficiency is high.
The multipoint interpolation method specifically comprises the following steps:
the continuous function is interpolated on the basis of discrete data such that this continuous curve passes through all given discrete data points, known as multi-point interpolation.
Definition: given n discrete data points (called nodes) (x k ,y k ) K=1, 2,..n. For x (x +.x) k K=1, 2, once again, n), the value of y corresponding to x is called interpolation.
f (x) is defined in the interval [ a, b ]]A function of the above. X is x 1 ,x 2 ,x 3 ,...,x n Is [ a, b ]]The upper n mutually different points, G is a given function class. If the function G (x) on G satisfies: g (x) i )＝f(x i ) K=1, 2, n, then G (x) is called an interpolation function of f (x) with respect to the node on G.
Optionally, in the above technical solution, the system further includes a multi-point data automatic acquisition device, where the multi-point data automatic acquisition device is configured to acquire single-sided swing value data, and send the single-sided swing value data to the server.
At present, the turning gear of the hydroelectric generating set of the domestic hydropower station generally adopts two modes of mechanical turning gear and electric turning gear. The mechanical jigger is pulled by a bridge machine and drags the unit by a steel wire rope and a pulley, and the method is simpler and more convenient and is usually adopted after a stator loop and a rotor loop are disconnected. In order to improve the traditional mechanical turning mode, the turning technology of the domestic hydropower station unit is characterized in that a motor drives a turning device to drag a rotating part of the unit to rotate, and the turning device is controlled to start and stop by a manual button. The electric jigger makes the generator stator and rotor to be electrified with direct current respectively, and then makes the machine set rotate slowly by utilizing the cross acting force of the stator and rotor magnetic fields. The rotating speed is easy to control and the stress is relatively uniform when the electric jigger is used, the axial influence on the unit is small, and the controllability of the unit rotating displacement is far higher than that of a mechanical jigger mode.
In order to know the deviation condition of the axis of the unit in the process of turning whether the unit is mechanically or electrically turned, a dial indicator is respectively arranged in the +X direction and the +Y direction of each layer of the unit, the reserved stroke of a small pointer of the dial indicator is manually adjusted according to the regulation, and the large pointer is zeroed. After starting the jigger device, stopping at the square point of the measuring part in the rotating process, manually reading the table and recording the measured data in a jigger record prepared in advance, wherein the jigger record usually comprises two methods, namely a circle drawing method and a form method, and the two methods have advantages and are commonly used together. According to the jigger record, the measured part dividing number is taken as an abscissa, the reading of the dial indicator is taken as an ordinate, a proper proportion is selected to draw a swing curve, manual tracing or CAD drawing software is generally adopted to draw the curve at present, after the curve is drawn, two swing curves in the +X direction and the +Y direction are checked, which curve is more in accordance with the rule of sine and cosine curves, whether two dividing numbers corresponding to wave crests and wave troughs differ by 180 degrees or not does not deviate from individual dividing points of the curve, and if 1-2 dividing points with larger individual errors exist, the curve can be deleted, so that the maximum swing value and azimuth distortion caused by curve deformity are reduced. And comparing the calculated relative swing degree with a regulation standard, and measuring whether the axial line quality of the unit jigger is qualified or not. In 2019, 4 months, a new source company of the national network jointly develops an intelligent jigger software system of the wired sensor, and the intelligent jigger software system is practically applied to power stations such as a double-tuned company of the south network, guangzhou energy storage and the like, but the wired sensor has complicated wiring work, high installation requirement and high research and development cost of 120 ten thousand yuan, and has a plurality of defects, and research and development teams are also struggling to develop a wireless intelligent jigger software system. That is, there is a problem of "jigger data multipoint acquisition workload is large and meter reading accuracy is poor" at present, specifically:
The existing turning proposal is that a mechanical dial indicator is respectively arranged in the +X direction and the +Y direction (at 90 degrees) of each measuring part of the main shaft of the hydroelectric generating set to measure the swing degree of a large shaft, staff is required to manually read the meter number at each layer of meter arrangement position, 8 bit lines are divided along the circumference at the upper guide shaft diameter position and are numbered correspondingly in the anticlockwise direction, each time a minute point is turned to, the staff is required to pause for reading the meter number, 16 persons are required to read the meter number at each minute point of each layer in the hydroelectric generating set at the same time, and the workload is high. Meanwhile, the light in the unit is weak, the working time is long, the environment is poor, the process of reading the meter and counting by the staff is extremely easy to generate errors, once one meter is wrong, the accuracy of measured data cannot be ensured, and the jigger working at this time also declares failure.
In addition, the existing jigger flow is that after one circle of jiggering, the technical staff calculates the results of the swing degree, the net full swing degree, the maximum net full swing degree, the relative swing degree and the like of each measuring point of the axis, one jigger takes hundreds of steps to calculate, the calculation steps are complex, the time is long, the calculation is easy to be miscalculated, a data analysis chart and an axis adjustment suggestion cannot be generated quickly in a short time, the axis adjustment needs to be combined with manual experience to obtain the final adjustment suggestion, and the complex generation process is unfavorable for continuous jigger work.
Therefore, the invention collects the single-sided swing degree value data through the multi-point data automatic collection device and sends the single-sided swing degree value data to the server. The workload can be greatly reduced, and the accuracy can be improved. In order to solve the problem that the manual generation process of the data analysis and adjustment suggestion is complex, the invention provides a precise, rapid and intelligent data chart visualization method and an axis maximum abnormal square point identification method. By the method, technicians can intuitively know the axis state conveniently, the trouble of searching the maximum abnormal square point in a complex manual data calculation process and CAD drawing is avoided, and method support is provided for generating axis adjustment suggestions.
Optionally, in the above technical solution, the device further comprises a main shaft forward and reverse rotation control device and an identification device;
the main shaft forward and backward rotation control device is used for controlling the motor of the jigger to forward rotate, backward rotate or stop so as to drive the main shaft to forward rotate, backward rotate or stop;
the identification device is used for: when the main shaft rotates, a plurality of preset marks distributed on the circumference of the main shaft are identified;
the server is also configured to: and controlling the multi-point data automatic acquisition device to acquire data when the identification device identifies any preset mark.
At present, the jigger process also has the problem of more dangerous factors of staff operation, in particular:
in the existing turning process, a large number of workers need to perform work such as dial indicator layout, meter reading, intercom and communication, and the like, and operation risk factors such as high-altitude operation, hole drop, coldness, dampness, mechanical injury and the like exist. Meanwhile, the electric jigger equipment needs to be repeatedly started, stopped and rotated forward and backward, and operators wear insulating gloves to operate, but casualties caused by glove breakdown are extremely easy to occur.
The main shaft forward and backward rotation control device solves the problems that the multi-point data acquisition is difficult and the number of dangerous factors is large in personnel operation in the turning process, and the main shaft forward and backward rotation control device consists of electric turning equipment and a forward and backward rotation remote control box, and a wiring structure schematic diagram in the forward and backward rotation remote control box is shown in fig. 4. Since the wiring structure is known to those skilled in the art, the description thereof will be omitted.
The 380V three-phase power is connected, the remote controller is in wireless connection with an intelligent remote control switch of the forward and reverse rotation remote control box through an antenna, and then a forward rotation button on the remote controller is continuously clicked, so that the forward rotation start and stop of the electric jigger equipment can be realized, and vice versa. No matter forward rotation or reverse rotation, the electric jigger equipment is connected with the main shaft of the unit, and the forward and reverse rotation of the main shaft of the unit is realized by remotely controlling the forward and reverse rotation of the electric jigger equipment.
The recognition device is composed of a color code sensor, a switching value conversion module and a network cable, as shown in fig. 5, a plurality of preset marks distributed on the circumferential direction of the main shaft can be color marks, the positions of the preset marks can be in one-to-one vertical correspondence with the preset positions, the color marks are recognized through the color code sensor, and the switching value conversion module is connected between the color code sensor and the server.
The switching value conversion module and the color code sensor are powered by a power supply, the color code sensor is focused and aligned with the color code zone of the dividing point of the main shaft of the unit under the condition of power supply, when the color code sensor identifies the color code of the dividing point of the main shaft of the unit, the color code sensor sends a high-order analog signal to the switching value conversion module, the switching value conversion module converts the analog signal into a digital signal which can be identified by a notebook operating system, a wireless intelligent dynamic jigger auxiliary system on the notebook operating system is responsible for receiving the digital signal, and whether a signal triggering a data acquisition and execution module is sent to wireless percentage meter management and control software is determined through judgment of the digital signal.
The switching value conversion module with the model EI00202 can be selected, and other switching value conversion modules can be used according to actual conditions.
Optionally, in the above technical solution, as shown in fig. 6, the automatic multi-point data acquisition device includes a wireless receiving rod, that is, a wireless receiver, and a plurality of wireless dial indicators, where at least one wireless dial indicator is arranged at each preset position; wherein, wireless receiving stick is wireless receiver by the treasured that charges.
The multipoint data automatic acquisition device is specifically used for: and receiving the single-sided swing degree value acquired by each wireless dial indicator through a wireless receiving rod, namely a wireless receiver.
Each wireless receiving rod, namely, each wireless receiver is connected to the USB extender through a USB active extension line, the USB extender is connected with a server such as a desktop computer or a notebook computer, and the like, and after the single-side swing degree value collected by each wireless dial indicator passes through the USB active extension line and the USB extender, the single-side swing degree value is input into the server. The length of the active extension line of the USB can be confirmed according to practical situations, such as 10m, 20m and the like.
The wireless dial indicator is powered by a button battery, the wireless receiving rod, namely the wireless receiver, is powered by a USB interface, and because the USB extension line is longer, the USB active extension line is used, the charger is used for powering each extension line, when the wireless dial indicator management and control software receives a trigger signal sent by the wireless intelligent dynamic turning auxiliary system, the wireless dial indicator management and control software judges whether to set a shortcut key or access a shortcut key, if the wireless dial indicator management and control software is the zeroing shortcut key, the wireless dial indicator management and control software can set all wireless dial indicators in a connection state to zero, if the wireless dial indicator management and control software is the access shortcut key, the wireless dial indicator management and control software can set all wireless dial indicators in the connection state to access, and the swing value of all wireless dial indicators can be correspondingly stored in an Excel data acquisition template file preset in advance.
The axis adjustment auxiliary device of the hydroelectric generating set solves the problems that the data calculation process is complex, different set parameters are different, and the turning device is low in integration level. The software system in the server consists of a notebook operating system, a wireless intelligent dynamic turning auxiliary system, wireless percentage meter management and control software and Excel 2010 or office software with the version above. The functions of each software system are as follows:
(1) Notebook operating system:
and installing a Windows operating system, and providing a system software platform for the wireless intelligent dynamic jigger auxiliary system, the wireless percentage meter management and control software and Excel 2010 or office software with above versions.
(2) Wireless intelligent dynamic jigger auxiliary system:
the functional modules of the wireless intelligent dynamic turning auxiliary system are divided into eight parts, namely a system login module, a unit type selection module, a parameter setting module, a data acquisition module, a data calculation module, a data analysis module, an axis processing module and a turning reporting module. Specifically:
1) A system login module: the system login is performed by entering an administrator or user password.
2) A unit type selection module: after logging in the system, unit type selection is performed, and meanwhile, a model diagram and an installation and disassembly flow of each unit type can be checked, as shown in fig. 7; wherein the system main window is shown in fig. 8.
3) Parameter setting module: and setting relevant initial parameters of the jigger unit.
4) And a data acquisition module: and acquiring the swing degree data of the jigger to generate a unit jigger data file.
5) And a data calculation module: and calculating the acquired data to generate calculation results such as relative swing degree and the like.
6) And a data analysis module: the calculated data is analyzed to generate a net full-swing graph and an axis graph, as shown in fig. 9.
7) And the axis processing module is used for: judging whether the axis deviation of the measured part exceeds the standard according to the maximum net full-swing degree or relative swing degree regulation standard value, and giving a conclusion and an adjustment suggestion.
8) And the jigger report module is used for: and (5) deriving result data obtained by the data calculation, data analysis and axis processing module, and generating a jigger report.
(3) Wireless dial indicator management and control software:
and is responsible for the management and control of the wireless dial indicators, including the addition, deletion and setting of the wireless dial indicators, the setting of the data acquisition file positions, and the like, as shown in fig. 10 and 11.
(4) Excel 2010 or version office software above: excel installation 2010 or more for storage of jigger data.
The specific execution flow is as follows:
(1) The basic environment for implementing the novel jigger scheme comprises a main shaft positive and negative remote control device of a layout unit, a multi-point data automatic acquisition device and a wireless intelligent dynamic jigger software system for installation and debugging. Specifically:
1) The front and back loading remote control device of the main shaft of the layout unit is laid according to the installation method of the electric jigger equipment and the wiring mode of the front and back rotation remote control box;
2) Laying a multi-point data automatic acquisition device: comprising the following steps:
(1) and (5) laying a data acquisition triggering module.
(2) Establishing connection between a wireless dial indicator and wireless dial indicator management and control software, and arranging a data acquisition execution module;
3) Installing and debugging a wireless intelligent dynamic turning software system: comprising the following steps:
(1) and installing and debugging wireless dial indicator management and control software.
(2) And (5) installing and debugging a wireless intelligent dynamic jigger auxiliary system.
(3) Debug Excel 2010 or above version office software is installed.
(2) The jigger data acquisition work can be carried out under the condition that each part is powered on. Specifically:
1) Starting a data acquisition function of the wireless intelligent dynamic turning auxiliary system;
2) The remote controller is used for remotely controlling the electric jigger equipment to rotate clockwise, and then the main shaft of the unit is driven to rotate clockwise;
3) When the color code sensor of the data acquisition triggering module recognizes the 1 st split point color code at the upper guide main shaft, the switching value conversion module sends an on value to the wireless intelligent dynamic turning auxiliary system to drive the wireless intelligent dynamic turning auxiliary system to call the zero setting function of the wireless dial indicator management and control software, and at the moment, all wireless dial indicators are set to zero;
4) When the color code sensor of the data acquisition triggering module recognizes the 2 nd sub-point color code at the upper guide main shaft, the switching value conversion module continuously sends an on value to the wireless intelligent dynamic turning auxiliary system to drive the wireless intelligent dynamic turning auxiliary system to call the taking function of the wireless dial indicator management and control software, and at the moment, the swing values of all the wireless dial indicators are correspondingly stored in an Excel data acquisition template file preset;
5) And (4) step is circularly executed, the 3 rd sub-point and the 4 th sub-point … … are collected until the main shaft of the unit rotates for one circle, the color scale of the 1 st sub-point and the color scale of the 2 nd sub-point are returned, the data collection of one jigger is finished, and all the measurement point swing degree data of the jigger are stored in an Excel data collection template file.
(3) An Excel data acquisition template file is imported into the wireless intelligent dynamic jigger auxiliary system, and contents such as calculation process data, a data analysis chart, an axis adjustment suggestion, a jigger report file and the like can be obtained through modules such as a main window, data analysis, axis processing, jigger report and the like, so that basis is provided for axis processing and adjustment. And (3) if multiple jiggers are needed, repeating the steps (2) - (3).
The invention has the following beneficial effects:
(1) The invention designs a novel wireless intelligent dynamic jigger scheme of a hydroelectric generating set, which saves manpower and improves the accuracy of reading a meter, in order to solve the problems of large workload of jigger data multipoint acquisition and poor accuracy of reading the meter. By the design of the scheme, the complex measurement data layout process and data calculation process are simplified, the turning cycle is shortened, the dynamic continuity of turning work is ensured, and the turning process is developed to informatization, automation and digitization trends.
(2) In order to solve the problem of multiple operation risk factors of workers in the turning process, the invention develops a multi-point data automatic acquisition device for avoiding multiple operation risk factors and a unit spindle forward and reverse rotation remote control device. Through the development of the device, a large amount of manpower investment is liberated, personal danger is eliminated, real-time data acquisition is carried out in a sampling period, the time sequence of jigger data is ensured, and a data foundation is laid for the follow-up jigger flow.
(3) The invention designs a novel wireless intelligent dynamic jigger scheme of a hydroelectric generating set, which saves manpower and improves the accuracy of reading a meter, in order to solve the problems of large workload of jigger data multipoint acquisition and poor accuracy of reading the meter. By the design of the scheme, the complex measurement data layout process and data calculation process are simplified, the turning cycle is shortened, the dynamic continuity of turning work is ensured, and the turning process is developed to informatization, automation and digitization trends.
(4) In order to solve the problem of multiple operation risk factors of workers in the turning process, the invention develops a multi-point data automatic acquisition device for avoiding multiple operation risk factors and a unit spindle forward and reverse rotation remote control device. Through the development of the device, a large amount of manpower investment is liberated, personal danger is eliminated, real-time data acquisition is carried out in a sampling period, the time sequence of jigger data is ensured, and a data foundation is laid for the follow-up jigger flow.
(5) The existing hydroelectric generating set comprises a plurality of types such as a suspension type three-guide type two-guide type, a suspension type two-guide type, a common umbrella type, a half umbrella type, a full umbrella type, a bulb tubular type and the like, basic parameters such as the relative limit bearing distance, the maximum net full swing degree or the relative swing degree standard value of different unit types are different. Meanwhile, the number of devices used by different units is different, and the devices are distributed in a scattered manner, so that the coordination work between the devices needs to be manually connected. In order to solve the problems of different unit parameters and low integration level of the jigger device, the invention develops a wireless intelligent dynamic jigger software system of a hydroelectric generating set, which integrates data acquisition, data calculation, data analysis, axis adjustment and jigger report. Through the research and development of the system, the parameter management and the turning flow of different types of units are unified, and the turning devices and the data processing processes which are distributed in a scattered way are integrated, so that turning work is more comprehensive, flow and standardization.
The invention firstly designs a novel wireless intelligent dynamic turning scheme of the hydroelectric generating set, and solves the problems of large turning workload and poor meter reading accuracy in the past; then, a multi-point data automatic acquisition device and a main shaft forward and backward rotation control device are developed, and the problems that the multi-point data acquisition is difficult and the personnel operation risk factors are large in the turning process are solved; then, a data chart visualization method and an axis maximum abnormal square point recognition method are provided, and the problem that the manual generation process of data analysis and adjustment advice is complex is solved; finally, under the guidance of a novel jigger scheme, the wireless intelligent dynamic jigger process of the hydroelectric generating set is realized through the coordination cooperation of the device, the method and the software system, corresponding contents such as original measurement data, calculation process data, a data analysis chart, an axis adjustment suggestion, jigger report documents and the like are generated, and the problems that the data calculation process is complex, different set parameters are different and the jigger device is low in integration level are solved.
As shown in fig. 12, an axis adjustment assisting method for a hydroelectric generating set according to an embodiment of the present invention includes:
s1, a server calculates a maximum relative swing degree value of each preset part of the hydroelectric generating set according to single-side swing degree value data, wherein the single-side swing degree value data comprises: a single-sided throw value for each preset position at each preset part;
S2, the server judges whether the maximum relative swing degree value of any preset part is larger than a preset standard threshold value corresponding to the preset part, if so, a multipoint interpolation method is utilized to process all net full swing degree values corresponding to the preset part, and the actual maximum net full swing degree value corresponding to the preset part is calculated until all the actual maximum net full swing degree values are obtained;
s3, the server determines an abnormal point position at the preset part corresponding to the actual maximum net full-swing value according to any actual maximum net full-swing value until all abnormal point positions are determined, so that a user can adjust the axis of the main shaft of the water-turbine generator set according to all abnormal point positions.
On the one hand, the preset part with the abnormal point position can be rapidly determined by judging the maximum relative swing value, on the other hand, in the actual work, the optimal axis adjustment position cannot be determined often according to the fact that the maximum net full swing value at the preset part is not the true maximum net full swing value, all net full swing values corresponding to the preset part are processed by utilizing a multi-point interpolation method, the actual maximum net full swing value of the preset part with the abnormal point position can be determined, all abnormal point positions are further determined, and the accurate adjustment of the axis of the main shaft of the hydroelectric generating set by a user is facilitated, and the efficiency is high.
Optionally, in the above technical solution, the method further includes:
and S01, the multi-point data automatic acquisition device acquires the single-sided swing degree value data and sends the single-sided swing degree value data to the server.
Optionally, in the above technical solution, the method further includes:
the main shaft forward and backward rotation control device controls the motor of the jigger to forward rotate, reverse rotate or stop so as to drive the main shaft to forward rotate, reverse rotate or stop;
when the main shaft rotates, the identification device identifies a plurality of preset marks distributed on the circumferential direction of the main shaft;
and when the identification device identifies any preset mark, the server controls the multi-point data automatic acquisition device to acquire data.
Optionally, in the above technical solution, the preset mark is a color mark.
Optionally, in the above technical solution, the automatic multipoint data collecting device includes a wireless receiving rod and a plurality of wireless dial indicators, and at least one wireless dial indicator is arranged at each preset position;
the multipoint data automatic acquisition device acquires unilateral swing degree value data and comprises:
and receiving the unilateral swing degree value acquired by each wireless dial indicator through the wireless receiving rod to obtain unilateral swing degree value data.
The steps for implementing the corresponding functions of each parameter and each unit module in the axis adjustment assisting method for a hydro-generator set according to the present invention may refer to each parameter and step in the embodiment of the axis adjustment assisting device for a hydro-generator set, which are not described herein.
In the above embodiments, although the steps S1, S2, etc. are numbered, only the specific embodiments are given herein, and those skilled in the art may adjust the execution sequence of the steps S1, S2, etc. according to the actual situation, which is also within the scope of the present invention, and it is understood that some embodiments may include some or all of the above embodiments. The implementation of the axis adjustment auxiliary method of the hydroelectric generating set adopts the axis adjustment auxiliary device of the hydroelectric generating set in each embodiment, and the implementation process is referred to above, and details are not repeated here.
In the present disclosure, the terms "first," "second," and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. The utility model provides an axis adjustment auxiliary device of hydroelectric set, its characterized in that includes the server, the server is used for:
calculating a maximum relative yaw value at each preset part of the hydro-generator set according to the unilateral yaw value data, wherein the unilateral yaw value data comprises: a single-sided throw value for each preset position at each preset part;
judging whether the maximum relative swing degree value of any preset part is larger than a preset standard threshold value corresponding to the preset part, if so, processing all net full swing degree values corresponding to the preset part by utilizing a multi-point interpolation method, and calculating the actual maximum net full swing degree value corresponding to the preset part until all the actual maximum net full swing degree values are obtained;
and determining an abnormal point position at a preset part corresponding to the actual maximum net full-swing value according to any actual maximum net full-swing value until all abnormal point positions are determined, so that a user can adjust the axis of the main shaft of the hydroelectric generating set according to all abnormal point positions.
2. The axis adjustment assisting device of a hydroelectric generating set according to claim 1, further comprising a multi-point data automatic acquisition device for acquiring the single-sided yaw value data and transmitting the single-sided yaw value data to the server.
3. The axis adjustment assisting device for a water turbine generator set according to claim 2, further comprising a main shaft forward and reverse rotation control device and an identification device;
the main shaft forward and backward rotation control device is used for controlling a motor of the jigger to forward rotate, backward rotate or stop so as to drive the main shaft to forward rotate, backward rotate or stop;
the identification device is used for: when the main shaft rotates, a plurality of preset marks distributed on the circumferential direction of the main shaft are identified;
the server is further configured to: and each time the identification device identifies any preset mark, controlling the multi-point data automatic acquisition device to acquire data.
4. An axis adjustment aid for a hydro-generator unit as defined by claim 3 wherein the predetermined indicia is a color indicia.
5. The axis adjustment assisting device of a hydroelectric generating set according to any one of claims 2 to 4, wherein the multi-point data automatic acquisition device comprises a wireless receiving rod and a plurality of wireless dial indicators, and at least one wireless dial indicator is arranged at each preset position;
The automatic multipoint data acquisition device is specifically used for: and receiving the single-sided swing degree value acquired by each wireless dial indicator through the wireless receiving rod.
6. An axis adjustment assisting method of a hydro-generator set is characterized by comprising the following steps:
the server calculates a maximum relative swing value at each preset part of the hydroelectric generating set according to the unilateral swing value data, wherein the unilateral swing value data comprises: a single-sided throw value for each preset position at each preset part;
the server judges whether the maximum relative swing value of any preset part is larger than a preset standard threshold value corresponding to the preset part, if yes, the server processes all net full swing values corresponding to the preset part by utilizing a multipoint interpolation method, and calculates the actual maximum net full swing value corresponding to the preset part until all the actual maximum net full swing values are obtained;
and the server determines the abnormal point position of the preset part corresponding to the actual maximum net full-swing value according to any actual maximum net full-swing value until all abnormal point positions are determined, so that a user adjusts the axis of the main shaft of the water turbine generator set according to all abnormal point positions.
7. The method for assisting in adjusting the axis of a hydroelectric generating set according to claim 6, further comprising:
the multi-point data automatic acquisition device acquires the single-sided swing degree value data and sends the single-sided swing degree value data to the server.
8. The method for assisting in adjusting the axis of a hydroelectric generating set according to claim 7, further comprising:
the main shaft forward and backward rotation control device controls the motor of the jigger to forward rotate, backward rotate or stop so as to drive the main shaft to forward rotate, backward rotate or stop;
when the main shaft rotates, the identification device identifies a plurality of preset marks distributed on the circumference of the main shaft;
and when the identification device identifies any preset mark, the server controls the multi-point data automatic acquisition device to acquire data.
9. The method according to claim 8, wherein the preset mark is a color mark.
10. The axis adjustment assisting method of a hydroelectric generating set according to any of claims 7 to 9, wherein the multi-point data automatic acquisition device comprises a wireless receiving rod and a plurality of wireless dial indicators, and at least one wireless dial indicator is arranged at each preset position;
The multipoint data automatic acquisition device acquires the unilateral swing degree value data and comprises:
and receiving the single-sided swing degree value acquired by each wireless dial indicator through a wireless receiving rod to obtain the single-sided swing degree value data.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008973A (en) * | 2012-12-27 | 2013-04-03 | 重庆水轮机厂有限责任公司 | Method for adjusting spindle axis of hydraulic turbine generator set |
| CN204228096U (en) * | 2014-11-05 | 2015-03-25 | 西安理工大学 | Adjustment System measured by a kind of hydroelectric generating set automation jiggering |
| CN107462139A (en) * | 2017-08-24 | 2017-12-12 | 成都天翔环境股份有限公司 | The method for correcting turbine-generator units shafting entirety throw by spraying connecting shaft Flange Plane |
| WO2018113165A1 (en) * | 2016-12-21 | 2018-06-28 | 国网电力科学研究院 | Configurable device for monitoring vibration and swing states of hydraulic turbine set, and data acquisition method |
| CN110553722A (en) * | 2019-07-15 | 2019-12-10 | 乌江渡发电厂 | Water guide swing detection method for power plant generator set |
| CN210833382U (en) * | 2019-12-27 | 2020-06-23 | 张宏杰 | Vertical hydroelectric generating set axis adjusting device |
| CN111413097A (en) * | 2020-04-26 | 2020-07-14 | 华能四川水电有限公司 | Method for predicting bending fault of main shaft of generator set |
| WO2021063294A1 (en) * | 2019-09-30 | 2021-04-08 | 华能四川水电有限公司 | Rotor center offset detection method and apparatus, storage medium, and device |
| CN112664379A (en) * | 2020-12-22 | 2021-04-16 | 国家电网有限公司 | Method and device for prejudging faults of water turbine set |
| CN113217255A (en) * | 2021-05-14 | 2021-08-06 | 华能澜沧江水电股份有限公司 | Method for monitoring main axis tortuosity of vertical hydraulic generator based on throw data |
| CN113239613A (en) * | 2021-04-09 | 2021-08-10 | 国网新源控股有限公司 | Hydro-turbine set throw alarm judgment method |
| CN113627090A (en) * | 2021-08-30 | 2021-11-09 | 国网东北分部绿源水力发电公司检修公司 | Method and system for adjusting axis of hydraulic turbine unit and electronic equipment |
| CN113883068A (en) * | 2021-09-28 | 2022-01-04 | 江苏省水利科学研究院 | Method and system for detecting main shaft throw of vertical water pump unit |
| CN114330122A (en) * | 2021-12-28 | 2022-04-12 | 东北电力大学 | Hydroelectric generating set large shaft axis adjusting method based on machine learning |
-
2022
- 2022-04-22 CN CN202210430639.8A patent/CN114856900B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008973A (en) * | 2012-12-27 | 2013-04-03 | 重庆水轮机厂有限责任公司 | Method for adjusting spindle axis of hydraulic turbine generator set |
| CN204228096U (en) * | 2014-11-05 | 2015-03-25 | 西安理工大学 | Adjustment System measured by a kind of hydroelectric generating set automation jiggering |
| WO2018113165A1 (en) * | 2016-12-21 | 2018-06-28 | 国网电力科学研究院 | Configurable device for monitoring vibration and swing states of hydraulic turbine set, and data acquisition method |
| CN107462139A (en) * | 2017-08-24 | 2017-12-12 | 成都天翔环境股份有限公司 | The method for correcting turbine-generator units shafting entirety throw by spraying connecting shaft Flange Plane |
| CN110553722A (en) * | 2019-07-15 | 2019-12-10 | 乌江渡发电厂 | Water guide swing detection method for power plant generator set |
| WO2021063294A1 (en) * | 2019-09-30 | 2021-04-08 | 华能四川水电有限公司 | Rotor center offset detection method and apparatus, storage medium, and device |
| CN210833382U (en) * | 2019-12-27 | 2020-06-23 | 张宏杰 | Vertical hydroelectric generating set axis adjusting device |
| CN111413097A (en) * | 2020-04-26 | 2020-07-14 | 华能四川水电有限公司 | Method for predicting bending fault of main shaft of generator set |
| CN112664379A (en) * | 2020-12-22 | 2021-04-16 | 国家电网有限公司 | Method and device for prejudging faults of water turbine set |
| CN113239613A (en) * | 2021-04-09 | 2021-08-10 | 国网新源控股有限公司 | Hydro-turbine set throw alarm judgment method |
| CN113217255A (en) * | 2021-05-14 | 2021-08-06 | 华能澜沧江水电股份有限公司 | Method for monitoring main axis tortuosity of vertical hydraulic generator based on throw data |
| CN113627090A (en) * | 2021-08-30 | 2021-11-09 | 国网东北分部绿源水力发电公司检修公司 | Method and system for adjusting axis of hydraulic turbine unit and electronic equipment |
| CN113883068A (en) * | 2021-09-28 | 2022-01-04 | 江苏省水利科学研究院 | Method and system for detecting main shaft throw of vertical water pump unit |
| CN114330122A (en) * | 2021-12-28 | 2022-04-12 | 东北电力大学 | Hydroelectric generating set large shaft axis adjusting method based on machine learning |
Non-Patent Citations (1)
| Title |
|---|
| 基于摆度规律与CAD相结合的导瓦间隙分配算法研究及应用;刘钢钢 等;水电与抽水蓄能;20210420;第7卷(第2期);50-60 * |
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