A method and terminal for hoisting a rotor of a hydro-generator

Abstract

The present invention discloses a method and a terminal for hoisting a rotor of a hydro-turbine generator, which can obtain first rotor distance data sent by a first positioning device, second rotor distance data sent by a second positioning device and third rotor distance data sent by a third positioning device in real time; obtain a preset gap distance between a rotor and a corresponding stator; obtain eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data; and determine final adjustment data corresponding to the rotor based on the eccentricity information and the preset gap distance. Unlike the prior art, the rotor is no longer manually positioned, but three positioning devices are set to obtain rotor distance data in real time, judge the eccentricity of the rotor based on the rotor distance data, and adjust the position of the rotor based on the eccentricity, thereby realizing automatic positioning of the rotor during hoisting, and thus realizing high-precision positioning of the hydro-turbine generator rotor in real time.

Description

Technical Field

[0001] The invention relates to the technical field of hydropower generation, and in particular to a method and a terminal for hoisting a rotor of a hydro-generator. Background Art

[0002] With the improvement of my country's equipment manufacturing level, my country has been able to design and produce the world's largest single-unit hydropower generating units. At the same time, my country is also the country with the most large or super-large hydropower stations in operation in the world. The large single-unit capacity of hydropower units means that the single weight of the main components of the turbine, such as the rotor and runner, is high. For example, the rotor weight of a 200MW turbine unit often exceeds 700 tons. The position and speed control of large-mass components during equipment hoisting is much more difficult than that of small-mass components. At the same time, large hydropower units are highly complex and require higher installation precision. In this way, on the one hand, heavy components are more difficult to control the position, and on the other hand, heavy components require more precise assembly, which has become a technical difficulty in hydropower maintenance.

[0003] The traditional hydropower unit assembly process requires a total of 30 to 50 people, including the general commander, ground assistants, crane drivers, and crane assistants. During the rotor installation process, the crane lifts the rotor to the top of the installation position and slowly drops it into the stator according to the command. This process requires that the center of the rotor and the stator are strictly aligned. At this time, the ground assistant uses a buffer plug to insert the gap between the rotor and the stator, and constantly pulls the plug up and down to check whether the assembly gap is too small. Generally, the single-sided assembly gap is about 20mm. If the rotor gap is too small and the plug cannot be pulled during the fall, the crane driver needs to stop the rotor from falling, re-lift the rotor, fine-tune the position according to the ground command, make the rotor and stator concentric in the vertical direction, and then try to put it down again. If the plug is still blocked, it needs to be re-lifted to guide whether the rotor can be installed in the stator without hindrance. This method has the following problems: first, it has low safety, as ground assistants need to work for a long time directly under the hoisted rotor; second, it has low accuracy, as the thickness of the plug plate is only 10 mm; third, it has poor early warning, as it only serves as a warning when the rotor has squeezed the buffer plug plate; fourth, it requires a high level of experience from the crane operator and the ground commander. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a method and a terminal for hoisting a rotor of a hydro-generator, which can realize high-precision positioning of the rotor of the hydro-generator in real time.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0006] A method for hoisting a rotor of a hydro-generator, comprising:

[0007] Real-time acquisition of first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device, and third rotor distance data sent by the third positioning device;

[0008] Obtaining a preset gap distance between a rotor and a corresponding stator;

[0009] Obtaining eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data;

[0010] Final adjustment data corresponding to the rotor is determined according to the eccentricity information and the preset gap distance.

[0011] In order to solve the above technical problems, another technical solution adopted by the present invention is:

[0012] A hydro-generator rotor hoisting terminal comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0013] Real-time acquisition of first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device, and third rotor distance data sent by the third positioning device;

[0014] Obtaining a preset gap distance between a rotor and a corresponding stator;

[0015] Obtaining eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data;

[0016] Final adjustment data corresponding to the rotor is determined according to the eccentricity information and the preset gap distance.

[0017] The beneficial effects of the present invention are: first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device, and third rotor distance data sent by the third positioning device are obtained in real time, a preset gap distance between the rotor and the corresponding stator is obtained, the eccentricity information of the rotor is obtained based on the first rotor distance data, the second rotor distance data, and the third rotor distance data, and the final adjustment data is determined according to the eccentricity information and the preset gap distance. Unlike the prior art, the rotor is no longer manually positioned, but three positioning devices are set to obtain rotor distance data in real time, the eccentricity of the rotor is judged based on the rotor distance data, and the position of the rotor is adjusted based on the eccentricity, thereby realizing automatic positioning of the rotor during hoisting, thereby realizing high-precision positioning of the rotor of the turbine generator in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A flow chart of steps of a method for hoisting a rotor of a hydro-generator according to an embodiment of the present invention;

[0019] Figure 2 A schematic structural diagram of a hydro-generator rotor hoisting terminal according to an embodiment of the present invention;

[0020] Figure 3 A position relationship diagram of a method for hoisting a rotor of a hydro-generator according to an embodiment of the present invention;

[0021] Figure 4 The figure is a data communication diagram of the positioning device in the method for hoisting the rotor of a hydro-turbine generator according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0023] Please refer to Figure 1 The embodiment of the present invention provides a method for hoisting a rotor of a hydro-generator, comprising:

[0024] Real-time acquisition of first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device, and third rotor distance data sent by the third positioning device;

[0025] Obtaining a preset gap distance between the rotor and the corresponding stator;

[0026] Obtaining eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data;

[0027] Final adjustment data corresponding to the rotor is determined according to the eccentricity information and the preset gap distance.

[0028] From the above description, it can be seen that the beneficial effects of the present invention are: real-time acquisition of first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device and third rotor distance data sent by the third positioning device, acquisition of a preset gap distance between the rotor and the corresponding stator, and obtaining rotor eccentricity information based on the first rotor distance data, the second rotor distance data and the third rotor distance data, and determination of final adjustment data based on the eccentricity information and the preset gap distance. Unlike the prior art, the rotor is no longer manually positioned, but three positioning devices are set to acquire rotor distance data in real time, determine the eccentricity of the rotor based on the rotor distance data, and adjust the position of the rotor based on the eccentricity, thereby realizing automatic positioning of the rotor during hoisting, thereby realizing high-precision positioning of the rotor of the hydro-turbine generator in real time.

[0029] Furthermore, the real-time receiving of the first distance data sent by the first positioning device corresponding to the rotor and the second distance data sent by the second positioning device includes:

[0030] Get the first center of the stator;

[0031] Determine, according to the first center of the circle, a first installation position corresponding to the first positioning device, a second installation position corresponding to the second positioning device, and a third installation position corresponding to the third positioning device;

[0032] generating a first installation instruction according to the first installation position, and sending the first installation instruction to the first positioning device;

[0033] generating a second installation instruction according to the second installation position, and sending the second installation instruction to the second positioning device;

[0034] generating a third installation instruction according to the third installation position, and sending the third installation instruction to the third positioning device;

[0035] Determine whether installation feedback information corresponding to the first installation instruction, the second installation instruction, and the third installation instruction is received, and if so, prompt an installation success message.

[0036] From the above description, it can be seen that by determining the installation positions of the three positioning devices according to the center of the stator, the positioning devices can be accurately installed around the stator, and the distance between the positioning devices and the center of the stator is ensured to be equal, which is conducive to the subsequent precise positioning of the rotor. There is no need to recalibrate when locating the position of the rotor relative to the stator.

[0037] Further, obtaining the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data includes:

[0038] Determine whether the first rotor distance data, the second rotor distance data and the third rotor distance data are equal, if so, determine that the rotor is not eccentric, if not, determine that the rotor is eccentric, and compare the first rotor distance data, the second rotor distance data and the third rotor distance data to obtain a comparison result;

[0039] The eccentricity information of the rotor is determined according to the comparison result.

[0040] From the above description, it can be seen that if the first rotor distance data, the second rotor distance data and the third rotor distance data are equal, it means that the rotor is not eccentric, otherwise, it means that the rotor is eccentric. The first rotor distance data, the second rotor distance data and the third rotor distance data are compared, and the eccentricity information of the rotor is determined according to the comparison result. The eccentricity of the rotor can be determined simply and effectively, thereby improving the accuracy of rotor positioning.

[0041] Further, after obtaining the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data, the method further comprises:

[0042] Selecting minimum rotor distance data from the first rotor distance data, the second rotor distance data, and the third rotor distance data, and determining the minimum rotor distance data as target rotor distance data;

[0043] It is determined whether the target rotor distance data is greater than a preset value. If so, it is determined that the rotor has not reached the position corresponding to the stator. If not, it is determined that the rotor has reached the position corresponding to the stator.

[0044] From the above description, it can be seen that it is determined whether the target rotor distance data is greater than the preset value. If so, it is determined that the rotor has not reached the position corresponding to the stator. If not, it is determined that the rotor has reached the position corresponding to the stator. For example, the distance from the three positioning devices to the center of the stator is used as the preset value. According to the theorem that the hypotenuse of a triangle is greater than the right angle, if it is greater than the preset value, it means that the rotor has not yet fit with the stator, and there is room for adjustment. It can accurately determine whether the rotor has reached the position of the stator. The preset value can also be increased to reserve more room for adjustment. If the rotor has not reached the position corresponding to the stator, the rotor can be directly adjusted to the center to ensure the stability of the rotor adjustment.

[0045] Further, the determining the final adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance includes:

[0046] Obtaining the radius of the rotor;

[0047] Determine a second center of the rotor according to the radius, the first rotor distance data, the second rotor distance data and the third rotor distance data;

[0048] Determining initial adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance;

[0049] Determine whether the second center of the circle overlaps with the first center of the circle based on the initial adjustment data. If so, determine the initial adjustment data as the final adjustment data. If not, return to execute the step of determining the initial adjustment data corresponding to the rotor based on the eccentricity information and the preset gap distance.

[0050] From the above description, it can be seen that the initial adjustment data is determined according to the eccentricity information and the preset gap distance, and whether the second center of the circle overlaps with the first center of the circle is judged according to the initial adjustment data. If so, it means that the initial adjustment data can complete the alignment of the stator and the rotor, and it is determined as the final adjustment data. Otherwise, it returns to redetermine the initial adjustment data, which can accurately achieve the alignment of the stator and the rotor, thereby ensuring the accuracy of the hoisting of the turbine generator rotor.

[0051] Please refer to Figure 2 , a hydro-generator rotor hoisting terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0052] Real-time acquisition of first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device, and third rotor distance data sent by the third positioning device;

[0053] Obtaining a preset gap distance between the rotor and the corresponding stator;

[0054] Obtaining eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data;

[0055] Final adjustment data corresponding to the rotor is determined according to the eccentricity information and the preset gap distance.

[0056] From the above description, it can be seen that the beneficial effects of the present invention are: real-time acquisition of first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device and third rotor distance data sent by the third positioning device, acquisition of a preset gap distance between the rotor and the corresponding stator, and obtaining rotor eccentricity information based on the first rotor distance data, the second rotor distance data and the third rotor distance data, and determination of final adjustment data based on the eccentricity information and the preset gap distance. Unlike the prior art, the rotor is no longer manually positioned, but three positioning devices are set to acquire rotor distance data in real time, determine the eccentricity of the rotor based on the rotor distance data, and adjust the position of the rotor based on the eccentricity, thereby realizing automatic positioning of the rotor during hoisting, thereby realizing high-precision positioning of the rotor of the hydro-turbine generator in real time.

[0057] Furthermore, the real-time receiving of the first distance data sent by the first positioning device corresponding to the rotor and the second distance data sent by the second positioning device includes:

[0058] Get the first center of the stator;

[0059] Determine, according to the first center of the circle, a first installation position corresponding to the first positioning device, a second installation position corresponding to the second positioning device, and a third installation position corresponding to the third positioning device;

[0060] generating a first installation instruction according to the first installation position, and sending the first installation instruction to the first positioning device;

[0061] generating a second installation instruction according to the second installation position, and sending the second installation instruction to the second positioning device;

[0062] generating a third installation instruction according to the third installation position, and sending the third installation instruction to the third positioning device;

[0063] Determine whether installation feedback information corresponding to the first installation instruction, the second installation instruction, and the third installation instruction is received, and if so, prompt an installation success message.

[0064] From the above description, it can be seen that by determining the installation positions of the three positioning devices according to the center of the stator, the positioning devices can be accurately installed around the stator, and the distance between the positioning devices and the center of the stator is ensured to be equal, which is conducive to the subsequent precise positioning of the rotor. There is no need to recalibrate when locating the position of the rotor relative to the stator.

[0065] Further, obtaining the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data includes:

[0066] Determine whether the first rotor distance data, the second rotor distance data and the third rotor distance data are equal, if so, determine that the rotor is not eccentric, if not, determine that the rotor is eccentric, and compare the first rotor distance data, the second rotor distance data and the third rotor distance data to obtain a comparison result;

[0067] The eccentricity information of the rotor is determined according to the comparison result.

[0068] From the above description, it can be seen that if the first rotor distance data, the second rotor distance data and the third rotor distance data are equal, it means that the rotor is not eccentric, otherwise, it means that the rotor is eccentric. The first rotor distance data, the second rotor distance data and the third rotor distance data are compared, and the eccentricity information of the rotor is determined according to the comparison result. The eccentricity of the rotor can be determined simply and effectively, thereby improving the accuracy of rotor positioning.

[0069] Further, after obtaining the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data, the method further comprises:

[0070] Selecting minimum rotor distance data from the first rotor distance data, the second rotor distance data, and the third rotor distance data, and determining the minimum rotor distance data as target rotor distance data;

[0071] It is determined whether the target rotor distance data is greater than a preset value. If so, it is determined that the rotor has not reached the position corresponding to the stator. If not, it is determined that the rotor has reached the position corresponding to the stator.

[0072] From the above description, it can be seen that it is determined whether the target rotor distance data is greater than the preset value. If so, it is determined that the rotor has not reached the position corresponding to the stator. If not, it is determined that the rotor has reached the position corresponding to the stator. For example, the distance from the three positioning devices to the center of the stator is used as the preset value. According to the theorem that the hypotenuse of a triangle is greater than the right angle, if it is greater than the preset value, it means that the rotor has not yet fit with the stator, and there is room for adjustment. It can accurately determine whether the rotor has reached the position of the stator. The preset value can also be increased to reserve more room for adjustment. If the rotor has not reached the position corresponding to the stator, the rotor can be directly adjusted to the center to ensure the stability of the rotor adjustment.

[0073] Further, the determining the final adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance includes:

[0074] Obtaining the radius of the rotor;

[0075] Determine a second center of the rotor according to the radius, the first rotor distance data, the second rotor distance data and the third rotor distance data;

[0076] Determining initial adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance;

[0077] Determine whether the second center of the circle overlaps with the first center of the circle based on the initial adjustment data. If so, determine the initial adjustment data as the final adjustment data. If not, return to execute the step of determining the initial adjustment data corresponding to the rotor based on the eccentricity information and the preset gap distance.

[0078] From the above description, it can be seen that the initial adjustment data is determined according to the eccentricity information and the preset gap distance, and whether the second center of the circle overlaps with the first center of the circle is judged according to the initial adjustment data. If so, it means that the initial adjustment data can complete the alignment of the stator and the rotor, and it is determined as the final adjustment data. Otherwise, it returns to redetermine the initial adjustment data, which can accurately achieve the alignment of the stator and the rotor, thereby ensuring the accuracy of the hoisting of the turbine generator rotor.

[0079] The above-mentioned method and terminal for hoisting a rotor of a hydro-generator of the present invention can be applied to the hoisting of a rotor of a hydro-generator, and the following is described through specific implementation methods:

[0080] Embodiment 1

[0081] Please refer to Figure 1 , 3 4. A method for hoisting a rotor of a hydro-turbine generator according to this embodiment includes:

[0082] S01, obtaining the first center of the stator;

[0083] S02, determining a first installation position corresponding to a first positioning device, a second installation position corresponding to a second positioning device, and a third installation position corresponding to a third positioning device according to the first circle center;

[0084] Wherein, the first positioning device, the second positioning device and the third positioning device are all laser rangefinders, and two of the positioning devices can be arbitrarily selected as slave positioning devices, and the remaining positioning device can be selected as the master positioning device. The slave positioning devices aggregate the data to the master positioning device, which processes the data uniformly, or a transfer server is added to receive and process the data sent by the first positioning device, the second positioning device and the third positioning device;

[0085] The distance between the first installation position and the first center of the circle, the distance between the second installation position and the first center of the circle, and the distance between the third installation position and the first center of the circle are all equal;

[0086] S03, generating a first installation instruction according to the first installation position, and sending the first installation instruction to the first positioning device;

[0087] Specifically, a first installation instruction is generated according to the first installation position, and the first installation instruction is sent to the first positioning device, and the first positioning device adjusts the installation position according to the first installation instruction;

[0088] S04, generating a second installation instruction according to the second installation position, and sending the second installation instruction to the second positioning device;

[0089] Specifically, a second installation instruction is generated according to the second installation position, and the second installation instruction is sent to the second positioning device, and the second positioning device adjusts the installation position according to the second installation instruction;

[0090] S05, generating a third installation instruction according to the third installation position, and sending the third installation instruction to the third positioning device;

[0091] Specifically, a third installation instruction is generated according to the third installation position, and the third installation instruction is sent to the third positioning device, and the third positioning device adjusts the installation position according to the third installation instruction;

[0092] S03-S05 can be executed simultaneously or separately, and the order of execution is not limited;

[0093] S06, determining whether installation feedback information corresponding to the first installation instruction, the second installation instruction, and the third installation instruction is received, and if so, prompting an installation success message;

[0094] S1, acquiring in real time first rotor distance data sent by a first positioning device, second rotor distance data sent by a second positioning device, and third rotor distance data sent by a third positioning device;

[0095] The first rotor distance data is the distance between the first positioning device and the preset position of the rotor, the second rotor distance data is the distance between the second positioning device and the preset position of the rotor, and the third rotor distance data is the distance between the third positioning device and the preset position of the rotor;

[0096] In this embodiment, the preset position is the lower edge position or the upper edge position of the rotor. When the rotor is lifted from the stator, the preset position is the upper edge position of the rotor. When the rotor is installed in the stator, the preset position is the lower edge position of the rotor.

[0097] S2, obtaining a preset gap distance between a rotor and a corresponding stator;

[0098] S3, obtaining the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data, specifically comprising:

[0099] S31, determining whether the first rotor distance data, the second rotor distance data and the third rotor distance data are equal, if so, determining that the rotor is not eccentric, if not, determining that the rotor is eccentric, and comparing the first rotor distance data, the second rotor distance data and the third rotor distance data to obtain a comparison result;

[0100] S32, determining the eccentricity information of the rotor according to the comparison result;

[0101] Specifically, the first rotor distance data, the second rotor distance data, and the third rotor distance data are sorted from small to large according to the comparison result to obtain a sorting result;

[0102] Determine the eccentricity information of the rotor according to the sorting result;

[0103] Wherein, the eccentricity information includes biased toward the first positioning device, biased toward the second positioning device, or biased toward the third positioning device;

[0104] For example, if the sorting result is the second rotor distance data, the third rotor distance data and the first rotor distance data, it can be determined that the rotor is biased toward the second positioning device;

[0105] In an optional implementation manner, the step S32 includes:

[0106] S33, generating a position relationship diagram between the stator and the rotor according to the eccentricity information, and displaying the position relationship diagram;

[0107] By generating and displaying the position relationship diagram of the stator and rotor, such as Figure 3 As shown, Figure 3 The large circle in the middle represents the stator, and the small circle represents the rotor. This position relationship diagram is convenient for the staff to refer to the position relationship diagram more intuitively for subsequent rotor position adjustment;

[0108] The positioning device is also equipped with a camera that can capture real-time images from multiple angles for the commander-in-chief's reference. The main positioning device can be equipped with a 5G communication module, such as Figure 4 As shown in the figure, the real-time data obtained by the positioning equipment, such as position relationship diagrams and rotor distance data, can be sent to remote users or staff with handheld terminals through 5G communication to view and communicate on-site conditions;

[0109] S5, selecting minimum rotor distance data from the first rotor distance data, the second rotor distance data and the third rotor distance data, and determining the minimum rotor distance data as target rotor distance data;

[0110] S6, determining whether the target rotor distance data is greater than a preset value, if so, determining that the rotor has not reached the position corresponding to the stator, if not, determining that the rotor has reached the position corresponding to the stator;

[0111] In an optional implementation manner, the preset value is the rotor distance data corresponding to when the rotor just reaches the position corresponding to the stator;

[0112] S7, determining final adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance, specifically including:

[0113] S71, obtaining the radius of the rotor;

[0114] S72, determining a second center of the rotor according to the radius, the first rotor distance data, the second rotor distance data, and the third rotor distance data;

[0115] S73, determining initial adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance;

[0116] S74, judging whether the second circle center overlaps with the first circle center according to the initial adjustment data, if so, determining the initial adjustment data as the final adjustment data, if not, returning to execute S73.

[0117] Embodiment 2

[0118] Please refer to Figure 2A hydro-generator rotor lifting terminal of this embodiment includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, each step of the hydro-generator rotor lifting method in the first embodiment is implemented.

[0119] In summary, the present invention provides a method and terminal for hoisting a rotor of a hydro-turbine generator, which obtains in real time first rotor distance data sent by a first positioning device, second rotor distance data sent by a second positioning device, and third rotor distance data sent by a third positioning device; obtains a preset gap distance between a rotor and a corresponding stator; determines whether the first rotor distance data, the second rotor distance data, and the third rotor distance data are equal, and if so, determines that the rotor is not eccentric, and if not, determines that the rotor is eccentric, and compares the first rotor distance data, the second rotor distance data, and the third rotor distance data to obtain a comparison result; determines the eccentricity information of the rotor according to the comparison result, which can simply and effectively determine the eccentricity of the rotor, thereby improving the accuracy of rotor positioning; obtains the radius of the rotor; and determines the rotor according to the comparison result. The radius, the first rotor distance data, the second rotor distance data and the third rotor distance data determine the second center of the rotor; the initial adjustment data corresponding to the rotor is determined according to the eccentricity information and the preset gap distance; whether the second center of the circle overlaps with the first center of the circle is judged according to the initial adjustment data, if so, the initial adjustment data is determined as the final adjustment data, if not, the step of determining the initial adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance is returned to execute, so that the stator and the rotor can be accurately aligned; by acquiring the rotor distance data in real time, judging the eccentricity of the rotor based on the rotor distance data, and adjusting the position of the rotor based on the eccentricity, automatic positioning of the rotor during hoisting is achieved, thereby achieving high-precision positioning of the rotor of the turbine generator in real time.

[0120] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for hoisting a rotor of a hydro-generator, characterized in that: include: Real-time acquisition of first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device, and third rotor distance data sent by the third positioning device; Obtaining a preset gap distance between a rotor and a corresponding stator; Obtaining eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data; Determining final adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance; The method of acquiring in real time the first rotor distance data sent by the first positioning device, the second rotor distance data sent by the second positioning device, and the third rotor distance data sent by the third positioning device comprises: Get the first center of the stator; Determine, according to the first center of the circle, a first installation position corresponding to the first positioning device, a second installation position corresponding to the second positioning device, and a third installation position corresponding to the third positioning device; generating a first installation instruction according to the first installation position, and sending the first installation instruction to the first positioning device; generating a second installation instruction according to the second installation position, and sending the second installation instruction to the second positioning device; generating a third installation instruction according to the third installation position, and sending the third installation instruction to the third positioning device; Determine whether installation feedback information corresponding to the first installation instruction, the second installation instruction, and the third installation instruction is received, and if so, prompt an installation success message; Determining the final adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance includes: Obtaining the radius of the rotor; Determine a second center of the rotor according to the radius, the first rotor distance data, the second rotor distance data and the third rotor distance data; Determining initial adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance; Determine whether the second center of the circle overlaps with the first center of the circle based on the initial adjustment data. If so, determine the initial adjustment data as the final adjustment data. If not, return to execute the step of determining the initial adjustment data corresponding to the rotor based on the eccentricity information and the preset gap distance.

2. A method for hoisting a hydro-generator rotor according to claim 1, characterized in that: The obtaining of the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data comprises: Determine whether the first rotor distance data, the second rotor distance data and the third rotor distance data are equal, if so, determine that the rotor is not eccentric, if not, determine that the rotor is eccentric, and compare the first rotor distance data, the second rotor distance data and the third rotor distance data to obtain a comparison result; The eccentricity information of the rotor is determined according to the comparison result.

3. A method for hoisting a hydro-generator rotor according to claim 1, characterized in that: After obtaining the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data, the method includes: Selecting minimum rotor distance data from the first rotor distance data, the second rotor distance data, and the third rotor distance data, and determining the minimum rotor distance data as target rotor distance data; It is determined whether the target rotor distance data is greater than a preset value. If so, it is determined that the rotor has not reached the position corresponding to the stator. If not, it is determined that the rotor has reached the position corresponding to the stator.

4. A hydro-generator rotor hoisting terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the following steps are implemented: Real-time acquisition of first rotor distance data sent by the first positioning device, second rotor distance data sent by the second positioning device, and third rotor distance data sent by the third positioning device; Obtaining a preset gap distance between a rotor and a corresponding stator; Obtaining eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data; Determining final adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance; The method of acquiring in real time the first rotor distance data sent by the first positioning device, the second rotor distance data sent by the second positioning device, and the third rotor distance data sent by the third positioning device comprises: Get the first center of the stator; Determine, according to the first center of the circle, a first installation position corresponding to the first positioning device, a second installation position corresponding to the second positioning device, and a third installation position corresponding to the third positioning device; generating a first installation instruction according to the first installation position, and sending the first installation instruction to the first positioning device; generating a second installation instruction according to the second installation position, and sending the second installation instruction to the second positioning device; generating a third installation instruction according to the third installation position, and sending the third installation instruction to the third positioning device; Determine whether installation feedback information corresponding to the first installation instruction, the second installation instruction, and the third installation instruction is received, and if so, prompt an installation success message; Determining the final adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance includes: Obtaining the radius of the rotor; Determine a second center of the rotor according to the radius, the first rotor distance data, the second rotor distance data and the third rotor distance data; Determining initial adjustment data corresponding to the rotor according to the eccentricity information and the preset gap distance; Determine whether the second center of the circle overlaps with the first center of the circle based on the initial adjustment data. If so, determine the initial adjustment data as the final adjustment data. If not, return to execute the step of determining the initial adjustment data corresponding to the rotor based on the eccentricity information and the preset gap distance.

5. A hydro-generator rotor hoisting terminal according to claim 4, characterized in that: The obtaining of the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data comprises: Determine whether the first rotor distance data, the second rotor distance data and the third rotor distance data are equal, if so, determine that the rotor is not eccentric, if not, determine that the rotor is eccentric, and compare the first rotor distance data, the second rotor distance data and the third rotor distance data to obtain a comparison result; The eccentricity information of the rotor is determined according to the comparison result.

6. A hydro-generator rotor hoisting terminal according to claim 4, characterized in that: After obtaining the eccentricity information of the rotor based on the first rotor distance data, the second rotor distance data and the third rotor distance data, the method includes: Selecting minimum rotor distance data from the first rotor distance data, the second rotor distance data, and the third rotor distance data, and determining the minimum rotor distance data as target rotor distance data; It is determined whether the target rotor distance data is greater than a preset value. If so, it is determined that the rotor has not reached the position corresponding to the stator. If not, it is determined that the rotor has reached the position corresponding to the stator.

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