CN116593158A

CN116593158A - Method, device, equipment and storage medium for adjusting bearing operation parameters

Info

Publication number: CN116593158A
Application number: CN202310536002.1A
Authority: CN
Inventors: 徐建伟; 蒋牧龙; 周光厚; 杨培平; 刘乐舟; 李效振
Original assignee: Dongfang Electric Machinery Co Ltd DEC
Current assignee: Dongfang Electric Machinery Co Ltd DEC
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-08-15

Abstract

The embodiment of the invention discloses a method, a device, equipment and a storage medium for adjusting bearing operation parameters, which relate to the technical field of hydroelectric generating set fault detection and are characterized in that the operation parameters of bearings in a hydroelectric generating set are obtained; determining the bearing seat target temperature of the bearing according to the operation parameters and the mapping relation between the preset operation parameters and the temperature; adjusting the bearing seat temperature of the bearing based on the bearing seat target temperature of the bearing so as to adjust the running parameters of the bearing on line; according to the method, the bearing seat target temperature is determined based on the operation parameters, the bearing seat temperature of the bearing is adjusted based on the bearing seat target temperature, the operation parameters of the bearing are adjusted on line in a thermal deformation mode, production loss caused by shutdown of the hydroelectric generating set is avoided, and the operation parameters of the bearing are adjusted on line only by adjusting the bearing seat temperature of the bearing, so that the method is convenient to operate.

Description

Method, device, equipment and storage medium for adjusting bearing operation parameters

Technical Field

The invention relates to the technical field of bearing fault detection of a hydro-generator set, in particular to a method, a device, equipment and a storage medium for adjusting bearing operation parameters.

Background

The hydroelectric generating set is used as core equipment for energy conversion of a hydropower station, and the constituent parts of the hydroelectric generating set are mutually coupled, so that the development trend of complexity and high integration is presented. Meanwhile, as the running environment of the hydroelectric generating set is bad and is influenced by coupling factors such as waterpower, machinery, electromagnetism and the like, the safety risks such as abnormal vibration, coupling faults, fatigue degradation and even structural damage of equipment are possibly caused, and the running environment is increasingly outstanding.

The bearing of the hydroelectric generating set is one of key equipment for ensuring the normal operation of the hydroelectric generating set, if the running clearance of the bearing in the hydroelectric generating set is too small, the bearing bush temperature is increased, and the service life of the hydroelectric generating set is reduced; therefore, in order to ensure the operation safety monitoring of the hydroelectric generating set and simultaneously improve the service life of the hydroelectric generating set, the running parameters of the bearings in the hydroelectric generating set need to be adjusted to enable the bearings to run in a stable range.

The existing hydropower unit operation parameter adjustment method mainly comprises offline adjustment (namely, in a shutdown state), and the adjustment means mainly comprises the step of adjusting the installation clearance to change the operation clearance so as to achieve the purpose. For example, if the tile temperature is too high, the installation clearance bar is small so as to achieve the purpose of reducing the tile temperature, and if the swing degree is large, the installation clearance is adjusted to be small so as to improve the rigidity of the bearing, thereby reducing the swing degree. However, the existing hydropower unit operation parameter adjustment method requires adjustment of the installation clearance after the hydropower unit is turned off, which affects the setup production and makes the operation complicated.

Disclosure of Invention

The embodiment of the invention provides a method, a device, equipment and a storage medium for adjusting bearing operation parameters, which are used for solving the problems of production loss and complex operation caused by the need of shutting down a hydroelectric generating set in the existing hydroelectric generating set operation parameter adjustment method.

In one aspect, an embodiment of the present invention provides a method for adjusting an operating parameter of a bearing, where the method includes:

acquiring operation parameters of bearings in the hydroelectric generating set;

determining a bearing seat target temperature of the bearing according to the operation parameters and a mapping relation between the preset operation parameters and temperature;

and adjusting the bearing seat temperature of the bearing based on the bearing seat target temperature of the bearing so as to adjust the running parameters of the bearing on line.

In another aspect, an embodiment of the present invention provides a device for adjusting an operating parameter of a bearing, including:

the parameter acquisition module is used for acquiring the operation parameters of the bearings in the hydroelectric generating set;

the temperature determining module is used for determining the bearing seat target temperature of the bearing according to the operation parameters and the mapping relation between the preset operation parameters and the temperature;

and the adjusting module is used for adjusting the bearing seat temperature of the bearing based on the bearing seat target temperature of the bearing so as to adjust the running parameters of the bearing on line.

In another aspect, an embodiment of the present invention provides an apparatus for adjusting an operating parameter of a bearing, including a memory and a processor; the memory stores an application program, and the processor is configured to run the application program in the memory, so as to execute the operations in the method for adjusting the bearing operating parameter.

In another aspect, an embodiment of the present invention provides a storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps in the method for adjusting an operating parameter of a bearing described above.

The embodiment of the invention provides a method, a device, equipment and a storage medium for adjusting bearing operation parameters, which relate to the technical field of hydroelectric generating set fault detection and are realized by acquiring the operation parameters of bearings in a hydroelectric generating set; determining the bearing seat target temperature of the bearing according to the operation parameters and the mapping relation between the preset operation parameters and the temperature; adjusting the bearing seat temperature of the bearing based on the bearing seat target temperature of the bearing so as to adjust the running parameters of the bearing on line; according to the method, the bearing seat target temperature is determined based on the operation parameters, the bearing seat temperature of the bearing is adjusted based on the bearing seat target temperature, the operation parameters of the bearing are adjusted on line in a thermal deformation mode, production loss caused by shutdown of the hydroelectric generating set is avoided, and the operation parameters of the bearing are adjusted on line only by adjusting the bearing seat temperature of the bearing, so that the method is convenient to operate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a guide bearing according to an embodiment of the present invention;

FIG. 2 is a flow chart of a method for adjusting bearing operating parameters according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the variation relationship between the operating parameters and the bearing seat temperature provided by an embodiment of the present invention;

FIG. 4 is a schematic view of an annular cavity of a bearing according to an embodiment of the present invention;

fig. 5 is a schematic flow chart of a closed-loop adjustment method for temperature of a bearing seat according to an embodiment of the present invention;

fig. 6 is a flowchart of an adjustment end determining method according to an embodiment of the present invention;

fig. 7 is a schematic flow chart of a method for adjusting temperature of a bearing seat according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a device for adjusting bearing operating parameters according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a device for adjusting bearing operating parameters according to an embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the invention.

The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.

It should be noted that: references herein to "a plurality" means two or more. "and/or" describes an association relationship of an association object, meaning that there may be three relationships, e.g., a and/or B may represent: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

As described in the background art, the existing method for adjusting the running parameters of the hydroelectric generating set needs to adjust the running parameters of the hydroelectric generating set by adjusting the installation clearance of the bearing after the hydroelectric generating set is shut down, but shutting down the hydroelectric generating set can affect the production of equipment, and the method for directly adjusting the installation clearance of the bearing needs professional personnel to operate, so that the operation difficulty is high and the operation is complex.

Because the running clearance of the bearing is inversely proportional to the bearing holding force, and the holding force is positively correlated with the rigidity and the swinging degree of the bearing and the bearing bush temperature, the running clearance of the bearing is negatively correlated with the rigidity and the swinging degree of the bearing and the bearing bush temperature, and the running parameters of the hydroelectric generating set can be adjusted by adjusting the running clearance of the bearing. However, in the running state of the hydroelectric generating set, the guide shoes of the bearing are in a stressed state, and it is very difficult to uniformly change the running clearance of the bearing.

Based on the above, in order to adjust the running clearance of the bearing in the running state of the hydroelectric generating set and realize the on-line adjustment of the running parameters of the hydroelectric generating set, the embodiment of the invention provides a method, a device, equipment and a storage medium for adjusting the running parameters of the bearing, which are used for determining the target temperature of the bearing seat based on the running parameters, adjusting the temperature of the bearing seat of the bearing based on the target temperature of the bearing seat, carrying out on-line adjustment on the running parameters of the bearing in a thermal deformation mode, avoiding the production loss caused by the shutdown of the hydroelectric generating set, and realizing the on-line adjustment of the running parameters of the bearing by only adjusting the temperature of the bearing seat of the bearing.

In order to facilitate understanding of the technical scheme provided by the invention, the method for adjusting the bearing operation parameters provided by the embodiment of the invention is described in detail below in connection with a specific application scene.

The method for adjusting the bearing operation parameters can be used for adjusting the operation parameters of guide bearings in the vertical hydroelectric generating set, and can be used for adjusting the bearing operation parameters of equipment provided with the guide bearings, such as a pumped storage generator set, a water pump turbine, a motor generator and the like.

Illustratively, the adjustment of the operation parameters of the guide bearings in the vertical hydroelectric generating set is described as an example, and the guide bearings in the vertical hydroelectric generating set are used for bearing radial mechanical unbalance force, electromagnetic unbalance force and hydraulic unbalance force of the rotating part, so that the rotating part of the set swings within a specified numerical range. Referring to fig. 1, fig. 1 is a schematic structural diagram of a guide bearing according to an embodiment of the present invention, where the guide bearing includes a plurality of guide shoes, a rotating shaft, and a bearing housing. The guide shoe can swing around a fulcrum in the circumferential direction to change the wedge angle formed with the surface of the journal so as to adapt to different working conditions.

It can be understood that, as shown in fig. 1, the reserved distance between the guide shoe and the shaft is the installation gap of the bearing, when the unit operates, the temperature of the bottom of the bearing is increased due to the operation of the unit, the reserved distance between the guide shoe and the shaft is reduced due to the increase of the temperature of the bottom of the bearing, namely the operation gap of the bearing is reduced, and the temperature of the guide shoe is increased. Therefore, in the running state of the hydroelectric generating set, in order to adjust running parameters such as running clearance, rigidity, swing degree, bush temperature, axle holding force and the like of the bearing, the temperature of the bottom of the bearing can be adjusted in a thermal deformation mode to adjust the reserved distance between the guide bush and the axle, and then the running parameters of the bearing in the hydroelectric generating set can be adjusted on line under the condition that the vertical hydroelectric generating set is not stopped.

As shown in fig. 2, fig. 2 is a flowchart of a method for adjusting a bearing operation parameter according to an embodiment of the present invention, where the method for adjusting a bearing operation parameter is applicable to an electronic device having a data processing capability, such as a computer, an industrial computer, a server, etc., and the embodiment of the present invention is not limited thereto specifically. The method for adjusting the bearing operating parameters shown in fig. 2 at least includes steps 210 to 230:

and 210, acquiring the operation parameters of the bearings in the hydroelectric generating set.

The operation parameters include, but are not limited to, the bearing bush temperature, the bearing running clearance, the bearing swinging degree, the bearing rigidity and the bearing holding force of the hydroelectric generating set.

The bearing bush temperature of the bearing can be the average value and the sum of the temperatures of each guide bush in the bearing.

In some embodiments, a pressure sensor and a temperature sensor can be arranged between each guide shoe and the bearing base, the bearing holding force of the bearing is obtained by collecting the stress of each guide shoe, the rigidity of the bearing is determined according to the bearing holding force, and the temperature of the guide shoe is collected by the temperature sensor to obtain the shoe temperature of the bearing; and obtaining the running clearance of the bearing by obtaining the diameter variation of the bearing.

Specifically, for the axle suspension force of the bearing, rectangular coordinates can be established by taking the bearing as the center, according to the included angle between each guide shoe and the rectangular coordinates, and the included angle between each guide shoe and the rectangular coordinates, the stress of each guide shoe is projected to the X direction and the Y direction respectively, the respective corresponding acting force of each guide shoe in the X direction and the Y direction is obtained, the acting force of the bearing on the axle is obtained by summarizing the respective corresponding acting forces of each guide shoe in the X direction and the Y direction, and the axle suspension force of the bearing is obtained according to the difference between the sum of the stress of each guide shoe and the acting force of the bearing on the axle.

The rigidity of the bearing can be obtained according to the acting force of the bearing on the shaft and the thermal deformation amount of the bearing.

For the running clearance of the bearing, the thermal deformation amount of the bearing can be obtained according to the diameter variation amount of the bearing, the running clearance variation amount of the bearing can be obtained according to the thermal deformation amount of the bearing, and the running clearance of the bearing can be obtained according to the running clearance variation amount and the installation clearance of the bearing. The installation clearance of the bearing refers to the reserved distance between the running guide shoe and the shaft. The diameter variation of the bearing comprises a bearing seat diameter variation and a shaft diameter variation, and the thermal deformation of the bearing represents the difference value of the bearing seat diameter variation and the shaft diameter variation of the bearing when the unit operates.

The diameter change may be the difference between the diameter of the bearing of the assembly before operation and the diameter of the bearing at the current time. In some embodiments, the diameter of the bearing before operation and the diameter of the bearing at the current moment can be acquired through a distance measuring sensor to obtain the diameter variation of the bearing; in some embodiments, a first bearing image of the unit before operation and a second bearing image at the current moment can be acquired, the first bearing image is subjected to target detection to obtain the diameter of the bearing in the first bearing image, the second bearing image is subjected to target detection to obtain the diameter of the bearing in the second bearing image, and the diameter variation of the bearing is obtained according to the difference between the diameter of the bearing in the first bearing image and the diameter of the bearing in the second bearing image.

Step 220, determining the bearing seat target temperature of the bearing according to the operation parameters and the mapping relation between the preset operation parameters and the temperature.

The mapping relation between the preset operation parameters and the temperatures is used for representing the mapping relation between the preset operation parameters and the corresponding preset bearing seat temperatures.

In some embodiments, the mapping relationship between the preset operation parameters and the temperature may be mapping data between the operation parameters and the temperature, which includes a plurality of preset operation parameter ranges and a preset bearing seat temperature corresponding to each preset operation parameter.

Optionally, a mapping relation between a preset operation parameter and temperature can be queried according to the operation parameter to obtain a target preset operation parameter range in which the operation parameter is located, and the preset bearing seat temperature corresponding to the target preset operation parameter range is determined as the bearing seat target temperature of the bearing.

In some embodiments, the mapping between the preset operating parameter and the temperature may be a mapping function between the operating parameter and the temperature, e.g., a proportional function, a linear function, a quadratic function, etc. The embodiment of the invention is not particularly limited, and can perform data fitting according to the actual application scene, the actual operation parameters of the hydroelectric generating set and the actual bearing seat temperature, and establish a mapping function between the operation parameters and the temperature.

In some embodiments, the mapping relationship between the preset operation parameter and the temperature may be a mapping model between the operation parameter and the temperature, where the mapping model may be a machine learning model, such as a logistic regression model, a random forest model, and the mapping model may also be a neural network model.

And 230, adjusting the temperature of the bearing seat of the bearing based on the target temperature of the bearing seat of the bearing so as to adjust the operation parameters of the bearing on line.

In consideration of the fact that the hydroelectric generating set is in operation, the distance between the guide shoe and the shaft is changed due to the fact that the temperature of the bearing is increased and the temperature of the shoe is increased, and then the operation parameters of the bearing are changed, so that the operation of the bearing in the hydroelectric generating set is unstable, and therefore the hydroelectric generating set is not shut down for adjusting the operation parameters of the bearing.

Specifically, based on the bearing seat target temperature of the bearing, the bearing seat temperature of the bearing is adjusted, the bearing seat temperature is adjusted to the bearing seat target temperature, and the running parameters of the bearing are adjusted on line.

In some embodiments, for the hydroelectric generating set performing bearing cooling through the circulating oil, the temperature of the circulating oil can be adjusted based on the bearing seat target temperature of the bearing, the bearing seat temperature of the bearing is uniformly adjusted by controlling the circulating oil with the temperature adjusted to flow into the bearing seat, the bearing seat temperature is adjusted to the bearing seat target temperature, and the operation parameters of the bearing are adjusted online.

In some embodiments, for the hydroelectric generating set for cooling the bearing by an air cooling mode, the air outlet temperature of the fan can be adjusted based on the bearing seat target temperature of the bearing, the temperature of the bearing seat of the bearing is uniformly adjusted by entering the bearing seat through the air with the adjusted temperature, the temperature of the bearing seat is adjusted to the bearing seat target temperature, and the operation parameters of the bearing are adjusted online.

According to the method for adjusting the running parameters of the bearing, the bearing seat target temperature is determined based on the running parameters, the bearing seat temperature of the bearing is adjusted based on the bearing seat target temperature, the running parameters of the bearing are adjusted on line in a thermal deformation mode, production loss caused by shutdown of a hydroelectric generating set is avoided, and the running parameters of the bearing are adjusted on line only by adjusting the bearing seat temperature of the bearing, so that the method is convenient to operate.

Considering that the temperature of the bearing seat influences the thermal deformation amount of the bearing, the change of the thermal deformation amount directly influences the running clearance of the bearing, so as to influence the axle holding force, the bearing rigidity, the bearing temperature and the bearing swinging degree of the bearing, and the axle holding force, the bearing rigidity, the bearing temperature and the bearing swinging degree respectively form nonlinear changes with the running clearance of the bearing, as shown in fig. 3, fig. 3 is a schematic diagram of the changing relation between the running parameters and the temperature of the bearing seat, when the temperature of the bearing seat is reduced, the running clearance is reduced, the axle holding force of the bearing is increased, the rigidity of the bearing is increased, the bearing swinging degree is increased, and meanwhile, the bearing swinging degree is reduced; when the temperature of the bearing seat rises, the running clearance is increased, the holding force of the bearing is reduced, the rigidity of the bearing is reduced, the bearing bush temperature of the bearing is reduced, and meanwhile, the swing degree of the bearing is increased. And the running parameters of the bearings of the hydroelectric generating sets in different models and different installation environments have differences in the changing relation between the bearing bottom temperature and the running parameters of the bearings of the hydroelectric generating sets. This increases the difficulty in determining the target temperature of the bearing bottom.

Based on the above, in order to improve the reliability of the adjustment of the bearing operation parameters and reduce the difficulty of determining the target temperature of the bearing bottom, the mapping relationship between the operation parameters and the temperature can be established based on the historical operation parameters and the historical bearing seat temperature of the bearing in the hydroelectric generating set in the past period, so that the target temperature of the bearing bottom can be obtained according to the operation parameters of the bearing in the hydroelectric generating set and the mapping relationship between the operation parameters and the temperature of the bearing in the hydroelectric generating set in the target temperature of the bearing bottom, the difficulty of determining the target temperature of the bearing bottom is reduced, and meanwhile, the reliability of the adjustment of the operation parameters of the bearing is improved. Wherein the past period of time may be the past week, the past month, the past three months, the past year, etc., and the embodiment of the present invention is not particularly limited thereto.

Specifically, the method for establishing the mapping relation between the operation parameters and the temperature comprises the following steps:

(1) And acquiring historical operation parameters of the bearings in the hydroelectric generating set and the temperature of the historical bearing seats of the bearings in the hydroelectric generating set.

(2) And performing data fitting on the historical operating parameters of the bearings in the hydroelectric generating set and the temperature of the historical bearing seat to obtain a mapping relation between the operating parameters and the temperature.

In some embodiments, historical operation parameters corresponding to each historical moment of a bearing in the hydroelectric generating set in a past period of time can be obtained, historical bearing seat temperatures corresponding to each historical moment of the bearing in the hydroelectric generating set in the past period of time can be obtained, the historical operation parameters corresponding to each historical moment of time and the historical bearing seat temperatures corresponding to each historical moment of time are subjected to time matching, the historical operation parameters and the historical bearing seat temperatures matched in the historical moment of time are obtained, the historical operation parameters and the historical bearing seat temperatures matched in the historical moment of time are subjected to data fitting, and the mapping relation between the operation parameters and the temperatures is obtained.

Optionally, based on the historical operation parameters corresponding to each historical time and the historical bearing seat temperatures corresponding to each historical time, the historical time corresponding to each historical operation parameter and the historical time corresponding to each historical bearing seat temperature are obtained, and the historical time corresponding to each historical operation parameter and the historical time corresponding to each historical bearing seat temperature are compared to obtain the historical operation parameters and the historical bearing seat temperatures matched with each historical time. The historical time matching may be that the historical time corresponding to the historical operation parameter is similar to the historical time corresponding to the historical bearing seat temperature, or the historical time corresponding to the historical operation parameter is identical to the historical time corresponding to the historical bearing seat temperature.

Optionally, according to the historical operation parameters and the historical bearing seat temperatures matched at the historical moments, the historical operation parameters and the historical bearing seat temperatures corresponding to the historical moments are obtained, and data fitting is performed based on the historical operation parameters and the historical bearing seat temperatures corresponding to the historical moments, so that the mapping relation between the operation parameters and the temperatures is obtained.

In some embodiments, taking a mapping relationship between an operation parameter and a temperature as an example to describe a mapping function between the operation parameter and the temperature, the historical operation parameter and the historical bearing seat temperature corresponding to each historical moment can be input into a preset data model for data fitting, so as to obtain the mapping relationship between the operation parameter and the temperature. The preset data model may be a data model based on machine learning, such as a data model based on logistic regression, or a data model based on a neural network, such as a data model based on RNN.

In some embodiments, taking the mapping relationship between the operation parameter and the temperature as an example to describe the mapping function between the operation parameter and the temperature, the data fitting can be performed according to the historical operation parameter and the historical bearing seat temperature corresponding to each historical moment and a preset initial mapping function, so as to obtain the mapping relationship between the operation parameter and the temperature.

Optionally, the historical operation parameters corresponding to each historical time may be input to a preset initial mapping function to perform function mapping, so as to obtain the predicted bearing seat temperature corresponding to each historical time, the historical bearing seat temperature corresponding to each historical time is compared with the predicted bearing seat temperature corresponding to each historical time, so as to obtain an error between the historical bearing seat temperature corresponding to each historical time and the predicted bearing seat temperature corresponding to each historical time, the preset initial mapping function is adjusted based on the error, and re-function mapping is performed based on the adjusted mapping function and the historical operation parameters corresponding to each historical time, so as to obtain a new predicted bearing seat temperature corresponding to each historical time, and repeating the operation until the error between the new predicted bearing seat temperature corresponding to each historical time and the historical bearing seat temperature corresponding to each historical time is smaller than or equal to a preset error threshold, fitting of data is stopped, and the mapping function at this time is determined as the mapping relation between the operation parameters and the temperature.

In some embodiments, taking the mapping relationship between the operation parameter and the temperature as the mapping data between the operation parameter and the temperature as an example for explanation, according to the historical operation parameter and the historical bearing seat temperature corresponding to each historical moment, the historical operation parameter corresponding to each historical moment and the historical bearing seat temperature corresponding to the historical moment can be associated and stored, so as to obtain the mapping relationship between the operation parameter and the temperature.

In some embodiments, data fitting can be performed by a least square method according to the historical operation parameters and the historical bearing seat temperatures corresponding to each historical moment, so as to obtain a mapping relation between the operation parameters and the temperatures.

In some alternative embodiments, after determining the mapping relationship between the operating parameters of the bearings in the hydroelectric generating set and the temperature, the mapping relationship between the operating parameters and the temperature is saved, and the operating parameters of the bearings in the hydroelectric generating set are obtained.

In some embodiments, the operating parameters of the bearings in the hydroelectric generating set may be periodically acquired at time intervals.

Optionally, the operation parameters of the bearings in the hydroelectric generating set are obtained according to step 210 in fig. 2, which will not be described in detail herein.

Optionally, the operation state of the bearing in the hydroelectric generating set can be determined according to the obtained operation parameters, when the operation state of the bearing in the hydroelectric generating set is abnormal, the operation clearance of the bearing in the hydroelectric generating set is unreasonable, and in order to ensure the safe operation of the hydroelectric generating set and delay the service life of the bearing in the hydroelectric generating set, the operation parameters of the bearing in the hydroelectric generating set need to be adjusted on line, and then the bearing seat target temperature operation of the bearing is determined according to the operation parameters and the mapping relation between the preset operation parameters and the temperature. The running state of the bearing in the hydroelectric generating set comprises abnormal running and normal running.

Specifically, the method for adjusting and judging the operation parameters of the bearings in the hydroelectric generating set comprises the following steps:

(1) And determining whether the bearing in the hydroelectric generating set meets parameter adjustment conditions according to the operation parameters and a preset operation parameter threshold.

(2) If the bearing in the hydroelectric generating set meets the parameter adjustment condition, executing the bearing seat target temperature operation of the bearing according to the operation parameter and the preset mapping relation between the operation parameter and the temperature.

The preset operation parameter threshold represents that the operation state of the bearing in the hydroelectric generating set is in a normal operation parameter range.

In some embodiments, the operation parameter may be compared with a preset operation parameter threshold, if the operation parameter is matched with the preset operation parameter threshold, it is determined that the operation of the bearings in the hydroelectric generating set is normal, the bearings in the hydroelectric generating set do not meet the parameter adjustment condition, and if the operation parameter is matched with the preset operation parameter threshold, it is determined that the bearings in the hydroelectric generating set may be abnormal, and the bearings in the hydroelectric generating set meet the parameter adjustment condition. For example, taking the running clearance of the bearing as the running parameter as an example, the preset running parameter threshold is a preset running clearance threshold, for example, the preset running parameter threshold is 0.15-0.25mm, that is, when the running clearance of the bearing is in the range of 0.15-0.25mm, the running parameter is determined to be matched with the preset running parameter threshold, the bearing in the hydroelectric generating set does not meet the parameter adjustment condition, and when the running clearance of the bearing is not in the range of 0.15-0.25mm, the running parameter is determined to be not matched with the preset running parameter threshold, and the bearing in the hydroelectric generating set meets the parameter adjustment condition.

It is considered that when the operation parameter does not match the preset operation parameter threshold, the hydroelectric generating set may be already in an abnormal state, which will affect the operation safety and the service life of the hydroelectric generating set. Based on this, in some embodiments, the risk level prediction may be performed according to the operation parameters of the bearings in the hydroelectric generating set, to determine the operation risk level of the bearings in the hydroelectric generating set; when the running risk degree of the bearing in the hydroelectric generating set is larger than or equal to a preset risk degree threshold, determining that the bearing in the hydroelectric generating set meets parameter adjustment conditions, executing the operation of determining the bearing seat target temperature of the bearing according to the running parameters and the mapping relation between the preset running parameters and the temperature; when the operation risk degree of the bearings in the hydroelectric generating set is smaller than a preset risk degree threshold, determining that the bearings in the hydroelectric generating set do not meet parameter adjustment conditions, continuously monitoring the operation state of the bearings in the hydroelectric generating set, and obtaining the operation parameters of the bearings in the hydroelectric generating set at the next moment. Therefore, before the bearing in the hydroelectric generating set operates abnormally, the operation parameters can be adjusted in advance, the abnormal times of the bearing in the hydroelectric generating set are reduced, and the service life of the bearing is prolonged.

Optionally, the operation parameters of the bearings in the hydroelectric generating set can be input into a preset risk prediction model to obtain the operation risk degree of the bearings in the hydroelectric generating set. The preset risk prediction model may be a model based on machine learning, and may be a model based on a neural network.

Optionally, the operation parameters and the historical operation parameters of the bearings in the hydroelectric generating set can be input into a preset parameter prediction model to obtain the predicted operation parameters of the bearings in the hydroelectric generating set, and the relationship data between the predicted operation parameters and the preset operation parameters and the risk degree is used to obtain the operation risk degree of the bearings in the hydroelectric generating set. The relationship data between the preset operation parameters and the risk degrees comprises a plurality of operation parameter ranges and the risk degrees corresponding to each operation parameter range. The pre-set parametric prediction model may be a cyclic neural network based model, such as an LSTM based model. The predicted operating parameter may be an operating parameter of a bearing in the hydroelectric generating set at a future time, for example, an operating parameter of a bearing in the hydroelectric generating set at a next time.

In some embodiments, the operation parameters of the bearings in the hydroelectric generating set and the historical operation parameters can be input into a preset parameter prediction model to obtain the predicted operation parameters of the bearings in the hydroelectric generating set, the predicted operation parameters are compared with a preset operation parameter threshold, and if the predicted operation parameters are matched with the preset operation parameter threshold, it is indicated that the bearings in the hydroelectric generating set normally operate at the future moment, and it is determined that the bearings in the hydroelectric generating set do not meet parameter adjustment conditions; if the predicted operation parameter is not matched with the preset operation parameter threshold, and the fact that the bearings in the hydroelectric generating set possibly run abnormally in future is indicated, the fact that the bearings in the hydroelectric generating set meet the parameter adjustment conditions is determined.

Considering that when the operation parameters of the bearing are adjusted, the distance between each guide shoe in the bearing and the bearing needs to be uniformly adjusted, so that when the temperature of the bearing seat of the bearing is adjusted, the temperature of the bearing seat needs to be uniformly adjusted, and further the distance between each guide shoe and the bearing is ensured to be the same, thereby ensuring the safe operation of the bearing in the hydroelectric generating set. Thus, in some embodiments, the temperature of the circulating oil or the temperature of the wind flowing into the bearing housing may be adjusted according to the bearing housing target temperature of the bearing, and uniform adjustment of the temperature of the bearing housing may be achieved by the circulating oil or the wind after the temperature adjustment.

For example, taking the temperature of the bearing seat for adjusting the temperature of the circulating oil as an example for explanation, the bearing is provided with an annular cavity, as shown in fig. 4, fig. 4 is a schematic diagram of the annular cavity of the bearing provided by the embodiment of the invention, wherein the arrow in fig. 4 is the flowing direction of the circulating oil in the annular cavity, the annular cavity is arranged in the bearing seat, one side of the bearing seat, which is far away from the guide shoe, is provided with an inlet and an outlet, the inlet and the outlet are respectively communicated with the annular cavity, and the circulating oil flows into the bearing seat through the inlet and flows out of the outlet after flowing through the annular cavity. The circulating oil flows through the annular cavity to cool or heat the bearing, and the circulating oil can be understood to comprise hot oil and cold oil, and the circulating oil mixed by the hot oil and the cold oil with different proportions flows through the annular cavity to cool or heat the bearing.

Specifically, the current temperature of the bearing seat of the bearing can be obtained, the temperature of the circulating oil is adjusted according to the temperature difference between the target temperature of the bearing seat of the bearing and the current temperature of the bearing seat, the circulating oil with the adjusted framework temperature flows into the bearing seat through the inlet, flows through the annular cavity and flows out of the outlet.

Optionally, the circulating oil of the bearing comprises cold oil and hot oil, the mixing proportion of the cold oil and the hot oil can be obtained according to the respective corresponding temperatures and temperature differences of the cold oil and the hot oil, the cold oil and the hot oil are mixed according to the mixing proportion of the cold oil and the hot oil, and the temperature of the circulating oil is adjusted. Wherein the mixing ratio characterizes the respective duty cycle of cold oil and hot oil in the circulating oil.

In some embodiments, the mixing ratio of the cold oil and the hot oil may be obtained according to the respective temperatures and the temperature differences of the cold oil and the hot oil and the preset proportional relationship data. The preset proportional relation data comprise a plurality of temperature differences and mixing proportions corresponding to each temperature difference under the respective corresponding temperatures of different cold oil and hot oil.

Considering that the change of the operation parameters of the bearings in the hydroelectric generating set is delayed after the temperature of the bearing seat is adjusted, for example, the tile temperature of the bearings is slowly changed, the operation parameters of the bearings after the temperature adjustment are acquired after the temperature of the bearing seat is adjusted, closed-loop control is formed based on the operation parameters of the bearings after the temperature adjustment, and the rationality of the operation parameter adjustment of the bearings is further ensured.

Specifically, as shown in fig. 5, fig. 5 is a flow chart of a bearing seat temperature closed-loop adjustment method provided by the embodiment of the invention, and the bearing seat temperature closed-loop adjustment method at least includes steps 240 to 260:

step 240, collecting the adjusted operation parameters of the bearing, and determining whether the bearing meets the preset adjustment ending condition based on the adjusted operation parameters.

In some embodiments, the adjusted operating parameters of the bearing may be collected according to step 210.

In some embodiments, the operation state of the bearing after parameter adjustment may be determined according to the above method for determining the operation state of the bearing in the hydroelectric generating set based on the adjusted operation parameter, and whether the bearing meets the preset adjustment end condition may be determined according to the operation state of the bearing after parameter adjustment.

Optionally, if the running state of the bearing after parameter adjustment represents that the running of the bearing in the hydroelectric generating set is normal, determining that the bearing meets the preset adjustment ending condition, and if the running state of the bearing after parameter adjustment represents that the running of the bearing in the hydroelectric generating set is abnormal, determining that the bearing does not meet the preset adjustment ending condition.

Considering that in the running of the hydroelectric generating set, after the temperature of the bearing base is adjusted, the running parameter change of the bearing is slow, the running of the bearing is stable for a long time, whether the running parameter adjustment of the bearing in the hydroelectric generating set is reasonable or not is determined as soon as possible, whether the running parameter change of the bearing has a convergence trend or not needs to be determined based on the adjusted running parameter, and when the running parameter change of the bearing has the convergence trend, the convergence running parameter when the running parameter change of the bearing is converged is predicted, and whether the bearing meets the preset adjustment ending condition or not is determined according to the convergence running parameter.

Specifically, as shown in fig. 6, fig. 6 is a flowchart of an adjustment end determining method according to an embodiment of the present invention, where the adjustment end determining method includes at least steps 241 to 244:

and 241, performing convergence prediction based on the adjusted operation parameters, and determining whether the variation trend of the bearing operation parameters is convergence.

In some embodiments, the adjusted operation parameters may be input to a preset parameter prediction model to perform parameter prediction, to obtain a predicted parameter sequence of the bearing, and the predicted parameter sequence is subjected to differential processing to obtain a variation sequence of the operation parameters of the bearing, and a variation trend of the operation parameters of the bearing is determined according to the variation sequence of the operation parameters of the bearing. Wherein the trend of change includes convergence and divergence. The predicted parameter sequence of the bearing comprises a plurality of future moments and predicted parameters corresponding to the future moments.

Optionally, if the variation value in the variation sequence of the bearing operation parameter gradually approaches to 0, determining that convergence exists in the variation trend of the bearing operation parameter; if the difference between the variation value and 0 in the variation sequence of the bearing operation parameter is larger, the variation trend of the bearing operation parameter is determined to be divergent.

Optionally, the predicted parameters between adjacent moments in the predicted parameter sequence may be differentiated to obtain a variation sequence of the bearing operating parameters.

In some embodiments, if the trend of the variation of the bearing operating parameter is divergent, determining a new bearing seat target temperature based on the adjusted operating parameter, and adjusting the bearing operating parameter based on the new bearing seat target temperature until the adjusted operating parameter determines that the preset adjustment end condition is satisfied, and stopping the adjustment of the bearing operating parameter.

In step 242, if the trend of the bearing operation parameter is convergent, determining a convergent operation parameter when the bearing operation parameter converges.

The convergence operation parameters represent operation parameters corresponding to the convergence of the variation trend of the bearing operation parameters.

In some embodiments, a target future time when the change value is 0 or approaches to 0 may be determined according to a change sequence of the bearing operating parameter, the predicted parameter sequence is queried based on the target future time to obtain a predicted parameter corresponding to the target future time, and the predicted parameter corresponding to the target future time is determined as a converging operating parameter when the bearing operating parameter converges.

In some embodiments, the total variation value of the bearing operating parameter may be obtained according to a variation sequence of the bearing operating parameter, and the convergent operating parameter may be obtained based on the total variation value of the bearing operating parameter and the adjusted operating parameter.

Step 243, if the converged operating parameter matches the preset operating parameter threshold, determining that the bearing meets the preset adjustment end condition.

In some embodiments, the convergent operating parameter may be compared with a preset operating parameter threshold, if the convergent operating parameter matches the preset operating parameter threshold, it is determined that the bearing meets the preset adjustment end condition, and if the convergent operating parameter does not match the preset operating parameter threshold, it is determined that the bearing does not meet the preset adjustment end condition.

For example, taking the operation parameter as the operation clearance of the bearing as an example, the preset operation parameter threshold is a preset operation clearance threshold, for example, when the preset operation parameter threshold is 0.15-0.25mm, that is, the convergence operation parameter is determined to be matched with the preset operation parameter threshold when the convergence operation clearance of the bearing is in the range of 0.15-0.25mm, and when the convergence operation clearance of the bearing is not in the range of 0.15-0.25mm, the convergence operation parameter is determined to be not matched with the preset operation parameter threshold.

Step 244, if the converged operating parameter does not match the preset operating parameter threshold, determining that the bearing does not meet the preset adjustment end condition.

And step 250, if the bearing determines that the preset adjustment ending condition is met, stopping adjustment of the bearing operation parameters.

In some embodiments, if the bearing determines that the preset adjustment end condition is met, which indicates that the temperature adjustment of the bearing seat is reasonable, the temperature of the bearing seat is maintained at the target temperature of the bearing seat, and the adjustment of the bearing operation parameters is stopped.

In some embodiments, to further ensure the operation safety of the hydroelectric generating set, after stopping the adjustment of the operation parameters, a new operation parameter of the bearing in the hydroelectric generating set may be obtained at a preset time interval, whether the bearing in the hydroelectric generating set meets the parameter adjustment condition is determined based on the new operation parameter, and when the bearing in the hydroelectric generating set meets the parameter adjustment condition, the steps 220 to 230 are executed to perform the adjustment of the operation parameters of a new round.

And 260, if the bearing does not meet the preset adjustment end condition, determining a new bearing seat target temperature based on the adjusted operation parameter, and adjusting the operation parameter of the bearing based on the new bearing seat target temperature until the adjusted operation parameter determines that the preset adjustment end condition is met, and stopping the adjustment of the operation parameter of the bearing.

In some embodiments, if the adjusted operation parameter is determined not to meet the preset adjustment end condition, which indicates that the adjustment of the bearing seat temperature of the bearing is not reasonable, a new bearing seat target temperature is determined according to the step 220 based on the adjusted operation parameter, and the operation parameter of the bearing is adjusted based on the new bearing seat target temperature until the adjusted operation parameter is determined to meet the preset adjustment end condition, and the adjustment of the operation parameter of the bearing is stopped.

When the temperature difference is considered to be large, the temperature of the bearing seat is directly adjusted to be the target temperature of the bearing seat of the bearing, so that the running clearance is greatly changed, the bearing in the hydroelectric generating set is easily unstable to run, and the running safety of the hydroelectric generating set is influenced. Based on this, in order to ensure the stable adjustment of the operation parameters of the bearing and to accelerate the convergence of the variation of the operation parameters of the bearing, in some embodiments, the temperature sequence may be determined according to the temperature difference between the target temperature of the bearing seat and the current temperature of the bearing seat, and the temperature of the circulating oil flowing into the annular cavity may be adjusted according to the temperature values corresponding to different moments in the temperature sequence, so that the speed of the temperature variation of the bearing seat is reduced through the temperature sequence, and further the stable variation of the operation parameters of the bearing is ensured.

Specifically, as shown in fig. 7, fig. 7 is a schematic flow chart of a bearing seat temperature adjustment method according to an embodiment of the present invention, where the bearing seat temperature adjustment method at least includes steps 231 to 233:

step 231, obtaining the current temperature of the bearing seat of the bearing, and determining a temperature sequence according to the temperature difference between the target temperature of the bearing seat of the bearing and the current temperature of the bearing seat.

The temperature sequence comprises a plurality of moments and temperature values corresponding to the moments.

In some embodiments, according to the temperature difference between the bearing seat target temperature of the bearing and the current temperature of the bearing seat and the preset temperature change speed, the temperature change values corresponding to different moments can be determined, and according to the temperature change values corresponding to different moments and the current temperature of the bearing seat of the bearing, the temperature sequence is obtained. The preset temperature change rate represents the temperature change value of the bearing seat in unit moment. The unit time may be 1 minute or 10 minutes, and the embodiment of the present invention is not particularly limited.

And step 232, adjusting the temperature of the circulating oil flowing into the annular cavity at each moment according to the temperature value corresponding to each moment in the temperature sequence.

And 233, controlling the circulating oil with the temperature adjusted to flow into the annular cavity, and adjusting the temperature of the bearing seat of the bearing.

In some embodiments, after adjusting the temperature of the circulating oil flowing into the annular cavity at each moment, flowing the circulating oil with the temperature adjusted at the moment into the annular cavity of the bearing seat, collecting the adjusted operation parameters, determining whether the bearing meets a preset adjustment end condition according to the steps 241-244 based on the adjusted operation parameters, if the bearing does not meet the preset adjustment end condition, adjusting the temperature of the circulating oil flowing into the annular cavity based on the temperature value at the next moment of the moment, flowing the circulating oil with the temperature adjusted into the annular cavity, and adjusting the temperature of the bearing seat of the bearing; if the bearing meets the preset adjustment ending condition, the temperature of the bearing seat is maintained at the temperature of the bearing seat at the current moment, and the adjustment of the running parameters of the bearing is stopped.

In order to better implement the method for adjusting the bearing operating parameter provided by the embodiment of the present invention, on the basis of the embodiment of the method for adjusting the bearing operating parameter, as shown in fig. 8, fig. 8 is a schematic structural diagram of the device for adjusting the bearing operating parameter provided by the embodiment of the present invention, where the device for adjusting the bearing operating parameter includes:

the parameter acquisition module 801 is used for acquiring the operation parameters of the bearings in the hydroelectric generating set;

the temperature determining module 802 is configured to determine a bearing seat target temperature of the bearing according to the operation parameter and a mapping relationship between a preset operation parameter and temperature;

and the adjusting module 803 is used for adjusting the bearing seat temperature of the bearing based on the bearing seat target temperature of the bearing so as to adjust the operation parameters of the bearing on line.

In some embodiments, the bearing is provided with an annular cavity, an adjustment module 803 for:

acquiring the current temperature of a bearing seat of a bearing, and determining a temperature sequence according to the temperature difference between the target temperature of the bearing seat of the bearing and the current temperature of the bearing seat; the temperature sequence comprises a plurality of moments and temperature values corresponding to the moments;

according to the temperature values corresponding to the moments in the temperature sequence, adjusting the temperature of circulating oil flowing into the annular cavity at the moments;

The circulating oil with the adjusted control degree flows into the annular cavity, and the temperature of the bearing seat of the bearing is adjusted.

In some embodiments, the adjustment device of the bearing operating parameter comprises:

the parameter fitting module 804 is configured to obtain a historical operation parameter of a bearing in the hydroelectric generating set, and a historical bearing seat temperature of the bearing in the hydroelectric generating set; and performing data fitting on the historical operating parameters of the bearings in the hydroelectric generating set and the temperature of the historical bearing seat to obtain a mapping relation between the operating parameters and the temperature.

the feedback adjustment module 805 is configured to collect an adjusted operation parameter of the bearing, and determine whether the bearing meets a preset adjustment end condition based on the adjusted operation parameter; if the bearing meets the preset adjustment ending condition, stopping adjusting the running parameters of the bearing; if the bearing does not meet the preset adjustment ending condition, determining a new bearing seat target temperature based on the adjusted operation parameter, adjusting the operation parameter of the bearing based on the new bearing seat target temperature, and stopping the adjustment of the operation parameter of the bearing until the adjusted operation parameter is determined to meet the preset adjustment ending condition.

In some implementations, a feedback adjustment module 805 to:

performing convergence prediction based on the adjusted operation parameters, and determining whether convergence exists in the variation trend of the bearing operation parameters;

if the variation trend of the bearing operation parameters is converged, determining the converged operation parameters when the bearing operation parameters are converged;

if the converged operating parameter is matched with a preset operating parameter threshold, determining that the adjusted operating parameter meets a preset adjustment ending condition;

if the converged operating parameter is not matched with the preset operating parameter threshold, determining that the adjusted operating parameter does not meet the preset adjustment ending condition.

In some implementations, the temperature determination module 802 is configured to:

determining whether a bearing in the hydroelectric generating set meets parameter adjustment conditions according to the operation parameters and a preset operation parameter threshold;

if the bearing in the hydroelectric generating set meets the parameter adjustment condition, executing the bearing seat target temperature operation of the bearing according to the operation parameter and the preset mapping relation between the operation parameter and the temperature.

In some embodiments, the operating parameters include an operating clearance of the bearing, and the parameter acquisition module 801 is configured to:

Collecting the bearing bottom diameter variation and shaft diameter variation of a bearing in the hydroelectric generating set;

obtaining the thermal deformation of the bearing according to the diameter variation of the bottom of the bearing and the diameter variation of the shaft;

and obtaining the running clearance of the bearing based on the thermal deformation amount of the bearing and the preset initial running clearance.

According to the device for adjusting the running parameters of the bearing, the bearing seat target temperature is determined based on the running parameters, the bearing seat temperature of the bearing is adjusted based on the bearing seat target temperature, the running parameters of the bearing are adjusted on line in a thermal deformation mode, production loss caused by shutdown of a hydroelectric generating set is avoided, and the running parameters of the bearing are adjusted on line only by adjusting the bearing seat temperature of the bearing, so that the device is convenient to operate.

The embodiment of the invention also provides a device for adjusting the bearing operation parameters, as shown in fig. 9, which shows a schematic structural diagram of the device for adjusting the bearing operation parameters according to the embodiment of the invention, specifically:

the bearing operating parameter adjustment device may include one or more processor cores of processor 901, one or more computer readable storage media of memory 902, power supply 903, and input unit 904, among other components. It will be appreciated by those skilled in the art that the arrangement of the bearing operating parameter adjustment device shown in fig. 9 does not constitute a limitation of the bearing operating parameter adjustment device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. Wherein:

The processor 901 is a control center of the bearing operating parameter adjusting apparatus, connects respective parts of the entire bearing operating parameter adjusting apparatus using various interfaces and lines, and performs various functions and processing data of the bearing operating parameter adjusting apparatus by running or executing software programs and/or modules stored in the memory 902 and calling data stored in the memory 902, thereby performing overall monitoring of the bearing operating parameter adjusting apparatus. Optionally, processor 901 may include one or more processing cores; preferably, the processor 901 may integrate an application processor and a modem processor, wherein the application processor primarily handles operating systems, user interfaces, applications, etc., and the modem processor primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 901.

The memory 902 may be used to store software programs and modules, and the processor 901 performs various functional applications and data processing by executing the software programs and modules stored in the memory 902. The memory 902 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data created according to the use of the adjustment device of the bearing operating parameters, etc. In addition, the memory 902 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 902 may also include a memory controller to provide access to the memory 902 by the processor 901.

The bearing operating parameter adjusting device further comprises a power supply 903 for supplying power to each component, and preferably, the power supply 903 may be logically connected to the processor 901 through a power management system, so that functions of charge, discharge, power consumption management and the like are managed through the power management system. The power supply 903 may also include one or more of any components, such as a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

The bearing operating parameter adjustment device may further comprise an input unit 904, which input unit 904 may be used for receiving input numerical or character information and for generating keyboard, mouse, joystick, optical or trackball signal inputs in connection with user settings and function control.

Although not shown, the device for adjusting the bearing operating parameters may further include a display unit or the like, which is not described herein. In particular, in this embodiment, the processor 901 in the device for adjusting the bearing operating parameters loads executable files corresponding to the processes of one or more application programs into the memory 902 according to the following instructions, and the processor 901 executes the application programs stored in the memory 902, so as to implement various functions as follows:

Acquiring operation parameters of bearings in the hydroelectric generating set;

determining the bearing seat target temperature of the bearing according to the operation parameters and the mapping relation between the preset operation parameters and the temperature;

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the various methods of the above embodiments may be performed by instructions, or by instructions controlling associated hardware, which may be stored in a computer-readable storage medium and loaded and executed by a processor.

To this end, an embodiment of the present invention provides a storage medium having stored therein a plurality of instructions capable of being loaded by a processor to perform the steps of any of the methods for adjusting bearing operating parameters provided by the embodiments of the present invention. For example, the instructions may perform the steps of:

acquiring operation parameters of bearings in the hydroelectric generating set;

The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.

Wherein the storage medium may include: read Only Memory (ROM), random access Memory (RAM, random Access Memory), magnetic or optical disk, and the like.

The instructions stored in the storage medium can execute the steps in any method for adjusting the bearing operating parameters provided by the embodiment of the present invention, so that the beneficial effects that any method for adjusting the bearing operating parameters provided by the embodiment of the present invention can be achieved, which are detailed in the previous embodiments and are not described herein.

The above description is provided in detail of a method, a device, an apparatus and a storage medium for adjusting bearing operating parameters, which are provided by the embodiments of the present invention, and specific examples are applied to illustrate the principles and embodiments of the present invention, and the above description of the embodiments is only used to help understand the method and core ideas of the present invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present invention, the present description should not be construed as limiting the present invention.

Claims

1. A method of adjusting an operating parameter of a bearing, the method comprising:

acquiring operation parameters of bearings in the hydroelectric generating set;

2. The method of adjusting bearing operating parameters of claim 1, wherein the bearing is provided with an annular cavity; the adjusting the bearing seat temperature of the bearing based on the bearing seat target temperature of the bearing comprises:

acquiring the current temperature of a bearing seat of the bearing, and determining a temperature sequence according to the temperature difference between the target temperature of the bearing seat of the bearing and the current temperature of the bearing seat; the temperature sequence comprises a plurality of moments and temperature values corresponding to the moments;

according to the temperature value corresponding to each moment in the temperature sequence, adjusting the temperature of circulating oil flowing into the annular cavity at each moment;

and circulating oil with the adjusted control degree flows into the annular cavity, and the temperature of the bearing seat of the bearing is adjusted.

3. The method for adjusting an operating parameter of a bearing according to claim 1, wherein before determining a bearing seat target temperature of the bearing according to the operating parameter and a fitting relation between a preset operating parameter and a temperature, the method comprises:

acquiring historical operation parameters of a bearing in a hydroelectric generating set and the temperature of a historical bearing seat of the bearing in the hydroelectric generating set;

and performing data fitting on the historical operating parameters of the bearings in the hydroelectric generating set and the temperature of the historical bearing seat to obtain a mapping relation between the operating parameters and the temperature.

4. The method of adjusting bearing operating parameters of claim 1, wherein after adjusting the bearing housing temperature of the bearing based on the bearing housing target temperature of the bearing, the method comprises:

collecting the adjusted operation parameters of the bearing, and determining whether the bearing meets a preset adjustment ending condition or not based on the adjusted operation parameters;

if the bearing meets the preset adjustment ending condition, stopping the adjustment of the bearing operation parameters;

if the bearing does not meet the preset adjustment ending condition, determining a new bearing seat target temperature based on the adjusted operating parameter, adjusting the operating parameter of the bearing based on the new bearing seat target temperature until the adjusted operating parameter is determined to meet the preset adjustment ending condition, and stopping adjusting the operating parameter of the bearing.

5. The method of claim 4, wherein determining whether a preset adjustment end condition is satisfied based on the adjusted operation parameter comprises:

and if the converged operating parameter is not matched with a preset operating parameter threshold, determining that the adjusted operating parameter does not meet a preset adjustment ending condition.

6. The method for adjusting an operating parameter of a bearing according to claim 1, wherein before determining a bearing seat target temperature of the bearing according to the operating parameter and a preset mapping relationship between the operating parameter and temperature, the method comprises:

determining whether a bearing in the hydroelectric generating set meets a preset parameter adjustment condition according to the operation parameters and a preset operation parameter threshold;

And if the bearing in the hydroelectric generating set meets the preset parameter adjustment condition, executing the bearing seat target temperature operation of the bearing according to the operation parameter and the mapping relation between the preset operation parameter and the temperature.

7. The method of adjusting an operating parameter of a bearing according to any one of claims 1 to 6, wherein the operating parameter comprises an operating clearance of the bearing;

the obtaining of the operation parameters of the bearings in the hydroelectric generating set comprises the following steps:

obtaining the thermal deformation of the bearing according to the diameter variation of the bearing bottom and the diameter variation of the shaft;

8. An apparatus for adjusting an operating parameter of a bearing, the apparatus comprising:

9. An apparatus for adjusting bearing operating parameters, comprising a memory and a processor; the memory stores an application program, and the processor is configured to execute the application program in the memory to perform the operations in the method for adjusting the bearing operation parameter according to any one of claims 1 to 7.

10. A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of the method of adjusting bearing operating parameters of any one of claims 1 to 7.