Self-adaptive multi-working-condition water turbine composite bearing device

Abstract

The invention relates to the field of water turbines, in particular to a self-adaptive multi-working-condition water turbine composite bearing device which comprises a thrust rod, an adjusting rod is slidably connected to the outer surface of the thrust rod, and an adjusting unit is fixedly connected to the outer surface of the adjusting rod; the inner wall of the fixing plate is provided with an adjusting unit, and the lower surface is slidably connected with a bearing bush; the connecting ring is fixedly connected to the inner wall of the fixing plate, and the outer surface is connected with a fixing shaft; the upper end of the threaded rod is in threaded connection with the fixing shaft, the lower end of the threaded rod is fixedly connected with an adjusting shaft, when gap adjustment is conducted, lifting of the thrust rod can drive the adjusting rod and the connecting rod to ascend and descend, and the connecting rod drives the fixing shaft to ascend and descend in the lifting process; when the fixed shaft ascends and descends, the threaded rod in threaded connection with the fixed shaft and the adjusting shaft are driven to ascend and descend, due to the fact that the adjusting shaft is telescopic, the adjusting shaft can drive the bearing bushes to expand in the ascending and descending process, and if a gap needs to be adjusted to be small, the spring between the bearing bushes resets the bearing bushes due to the elastic effect.

Description

Technical Field

[0001] The present invention relates to the field of water turbines, and more particularly to an adaptive multi-condition water turbine composite bearing device. Background Art

[0002] A water turbine is a power machine that converts the energy of water flow (potential energy, kinetic energy) into mechanical energy and is widely used in hydropower generation, water conservancy projects, ship propulsion and other fields. Its core function is to drive the impeller to rotate through the water flow, and then drive the generator to generate electricity or drive other mechanical devices. As the core power equipment for converting the energy of water flow into mechanical energy, its development process runs through the exploration and utilization of natural energy by humans - from the prototype of the wooden water wheel used for irrigation and grinding in ancient China, to the breakthrough inventions of efficient impulse and reaction turbines by engineers such as Fourneyron and Pelton during the Industrial Revolution, and then to the intelligent precise control realized by modern computational fluid dynamics (CFD), 3D printing alloy materials and Internet of Things (IoT) technologies, a diversified technology system covering mixed flow, impulse, axial flow, tubular flow, etc. has been formed. Its core principle is based on the dual action of the impact force and reaction force of the water flow on the impeller. By optimizing the blade surface flow channel and matching the head and flow parameters, the water energy conversion efficiency is increased to more than 95%. At the application level, the water turbine is not only the "heart" of giant hydropower stations such as the Three Gorges and Baihetan, driving 17% of the global electricity production, but also realizes grid peak shaving with reversible units in pumped storage power stations, develops clean tidal energy with tubular flow turbines at tidal estuaries, and even constructs off-grid energy systems with micro turbines in remote mountainous areas. At the same time, eco-friendly designs (such as low-speed fish-friendly impellers, fishway-compatible structures) and digital upgrades (digital twin operation and maintenance, AI dynamic power regulation) are driving its transformation from a single power generation device to a "green energy hub". In the future, it will be more deeply integrated with solar and wind energy to form a multi-energy complementary system, and through cutting-edge technologies such as metamaterial bionic blades and autonomous operation algorithms, it will continuously break through the energy efficiency limit and become an indispensable core equipment under the global carbon neutrality goal.

[0003] During the use of a water turbine, the clearance and inclination of the bearings inside it affect its working efficiency, which is as follows:

[0004] Excessive clearance:

[0005] When the rotating shaft rotates, it may produce radial or axial "wobbling", resulting in friction between the impeller and the fixed components, causing abnormal vibration and noise; the increased vibration will accelerate the wear of the bearings and the loosening of bolts, and even cause structural damage such as spindle bending and impeller cracking;

[0006] Too small clearance:

[0007] It is difficult to form a lubricating oil film between the bearing and the journal, resulting in dry friction or semi-dry friction, which may cause serious failures such as bearing overheating and burning of the bearing shell. An excessively small clearance may further shrink due to the thermal expansion effect, exacerbating friction and even causing the shafting to "seize".

[0008] In addition, the bearing bears asymmetric loads, resulting in local stress concentration of the rolling elements or the bearing shell, accelerating wear. For example, unilateral scratches may occur on the sliding bearing, and eccentric wear of the inner or outer ring may occur on the rolling bearing; the main shaft generates a bending moment due to inclined force, and long-term operation may cause fatigue cracks or even fractures in the journal;

[0009] At the same time, the inclination of the bearing will change the concentricity of the shafting, resulting in eccentric wear between the rotating seal and the fixed components, uneven seal clearance, and causing water leakage or oil leakage; for high-speed units, seal failure may lead to pressure oil leakage, affecting the normal operation of the speed regulation system.

[0010] Therefore, we have made improvements in this regard and proposed an adaptive multi-condition water turbine composite bearing device. Summary of the Invention

[0011] The purpose of the present invention is to address the problems that currently exist, namely, an excessively large bearing clearance is likely to cause mechanical vibration, efficiency loss, and component wear, while an excessively small clearance may lead to bearing overheating or even seizure; an excessive bearing inclination will result in uneven shafting force, seal failure, increased vibration, and decreased hydraulic performance.

[0012] In order to achieve the above-mentioned invention purpose, the present invention provides an adaptive multi-condition water turbine composite bearing device to improve the above problems.

[0013] Specifically, this application is as follows:

[0014] It includes: a thrust rod, with an adjusting rod slidably connected to its outer surface, and an adjusting unit fixedly connected to the outer surface of the adjusting rod;

[0015] A fixing plate, with an adjusting unit installed on its inner wall, and a bearing shell slidably connected to its lower surface;

[0016] A connecting ring, fixedly connected to the inner wall of the fixing plate, and a fixed shaft penetrating through its outer surface;

[0017] A threaded rod, with its upper end threadedly connected to the fixed shaft, and the lower end of the threaded rod fixedly connected to an adjusting shaft, and the adjusting shaft tapers upward from the lower surface.

[0018] As a preferred technical solution of this application, the adjusting unit includes a connecting rod, one end of the connecting rod is fixedly connected to the adjusting rod, and the other end is hinged to the fixed shaft;

[0019] The fixed shaft is provided with a through groove on its outer surface, and the connecting ring penetrates through the through groove to form a closed loop.

[0020] As a preferred technical solution of the present application, a connection block is fixedly connected to the lower end of the thrust rod. The connection block includes a cylindrical part and a connection part. The connection part tapers upward from the lower end and its tapered end is fixedly connected to the thrust rod. Tooth roots are provided on the outer surface of the cylindrical part, and a toothed ring meshes with the tooth roots. The toothed ring is slidably connected to the connection block through the tooth roots.

[0021] As a preferred technical solution of the present application, a deflector is fixedly connected to the lower surface of the toothed ring. A plurality of slots are provided on the upper surface of the deflector, and a limiting plate is fixedly connected to the upper surface of the deflector.

[0022] As a preferred technical solution of the present application, a limiting ring is fixedly connected to the upper surface of the limiting plate. A plurality of balls are installed on the limiting ring. An oil groove is rotatably connected to the upper surface of the limiting ring. The limiting ring, the limiting plate and the balls are symmetrically arranged above and below the oil groove.

[0023] As a preferred technical solution of the present application, an oil cooler is fixedly connected to the inner wall of the oil groove. The inner wall of the oil cooler is fixedly connected to a fixing plate. The oil cooler is wound into a cylinder, and a limiting sleeve for fixing is installed on its outer surface.

[0024] As a preferred technical solution of the present application, a feeding plate penetrates through the outer surface of the limiting plate. The feeding plate is in a Y shape, and its lower end is communicated with a connecting column. The inner wall of the connecting column is rotatably connected to the limiting plate.

[0025] As a preferred technical solution of the present application, a runner chamber is communicated with the lower surface of the connecting column. A protective cover is fixedly connected to the inner wall of the runner chamber, and runner blades are rotatably connected to the protective cover.

[0026] As a preferred technical solution of the present application, a rotating shaft is fixedly connected to the movable end of the runner blade. A connecting sleeve is fixedly connected to the upper end of the rotating shaft. A plurality of water grooves are provided on the outer surface of the connecting sleeve, and a limiting plate is communicated with the upper surface of the connecting sleeve.

[0027] As a preferred technical solution of the present application, flanges are installed between the feeding plate, the connecting column and the runner chamber, and the feeding plate, the connecting column and the runner chamber are all fixed by bolts.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0029] In the solution of the present application:

[0030] 1. When adjusting the gap, the lifting of the thrust rod can drive the lifting of the adjusting rod and the connecting rod. During the lifting process of the connecting rod, the fixed shaft is driven to lift. While the fixed shaft is lifting, the threaded rod and the adjusting shaft threadedly connected to it are driven to lift. Since the adjusting shaft is telescopic, it will drive the expansion of the bearing bush during the lifting process. If it is necessary to reduce the gap, the spring between the bearing bushes will reset them due to its elastic effect;

[0031] 2. When adjusting the inclination, the adjusting ring slides. The sliding of the adjusting ring drives the connecting rod to rotate, and then drives the fixed shaft hinged to it to rotate. The rotation of the fixed shaft drives the threaded rod and the adjusting shaft, and at the same time the bearing bush in contact with the adjusting shaft rotates to realize the adjustment of the inclination of the bearing bush. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the overall structural schematic diagram of an adaptive multi - condition water turbine composite bearing device provided by the present application;

[0033] Figure 2 is the exploded view of an adaptive multi - condition water turbine composite bearing device provided by the present application;

[0034] Figure 3 is the top view of the adjustment unit of an adaptive multi - condition water turbine composite bearing device provided by the present application;

[0035] Figure 4 is the bottom view of the adjustment unit of an adaptive multi - condition water turbine composite bearing device provided by the present application;

[0036] Figure 5 is the overall schematic diagram of the bearing of an adaptive multi - condition water turbine composite bearing device provided by the present application;

[0037] Figure 6 is the internal structural schematic diagram of the bearing of an adaptive multi - condition water turbine composite bearing device provided by the present application;

[0038] Figure 7 is the schematic diagram of the adjustment unit of an adaptive multi - condition water turbine composite bearing device provided by the present application;

[0039] Figure 8 is the partial schematic diagram of the adjustment unit of an adaptive multi - condition water turbine composite bearing device provided by the present application;

[0040] Figure 9 is the detailed diagram of the adjustment unit of an adaptive multi - condition water turbine composite bearing device provided by the present application.

[0041] Labels in the figures:

[0042] 101, Thrust rod; 102, Adjusting rod; 103, Fixed plate; 104, Bearing bush; 105, Connecting ring; 106, Fixed shaft; 107, Threaded rod; 108, Adjusting shaft;

[0043] 201, Connecting rod; 202, Through slot;

[0044] 301, Connecting block; 302, Tooth root; 303, Tooth ring;

[0045] 401, Deflector; 402, Groove; 403, Limiting plate;

[0046] 501, Limiting ring; 502, Ball; 503, Oil groove;

[0047] 601, Oil cooler; 602, Limiting sleeve;

[0048] 701, Loading plate; 702, Connecting column;

[0049] 801, Runner chamber; 802, Protective cover; 803, Runner blade;

[0050] 901, Rotating shaft; 902, Connecting sleeve; 903, Water tank; 904, Flange; 905, Bolt. Detailed implementation mode

[0051] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0052] As described in the background art, too large a bearing clearance is likely to cause mechanical vibration, efficiency loss and component wear, while too small a clearance may lead to bearing overheating or even seizure; an excessive bearing inclination will cause uneven force on the shafting, seal failure, increased vibration and a decline in hydraulic performance.

[0053] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0054] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments can be combined with each other.

[0055] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0056] Embodiment 1:

[0057] An adaptive multi - condition water turbine composite bearing device, a thrust rod 101, with an adjusting rod 102 slidably connected to its outer surface, and an adjusting unit fixedly connected to the outer surface of the adjusting rod 102;

[0058] A fixing plate 103, with an adjusting unit installed on its inner wall, and a bearing bush 104 slidably connected to its lower surface;

[0059] A connecting ring 105, fixedly connected to the inner wall of the fixing plate 103, and a fixed shaft 106 penetrating through its outer surface;

[0060] A threaded rod 107, with its upper end thread - connected to the fixed shaft 106, and a lower end of the threaded rod 107 fixedly connected to an adjusting shaft 108, and the adjusting shaft 108 tapers upward from the lower surface.

[0061] When adjusting the clearance, the lifting and lowering of the thrust rod 101 can drive the adjusting rod 102 and the connecting rod 201 to lift and lower. During the lifting and lowering process of the connecting rod 201, it drives the fixed shaft 106 to lift and lower. While the fixed shaft 106 is lifting and lowering, it drives the threaded rod 107 and the adjusting shaft 108 thread - connected to it to lift and lower. Since the adjusting shaft 108 is telescopic, during its lifting and lowering process, it will drive the bearing bush 104 to expand. If it is necessary to reduce the clearance, the spring between the bearing bushes 104 will reset it due to its elastic force;

[0062] When adjusting the inclination, the adjusting ring slides. The sliding of the adjusting ring drives the connecting rod 201 to rotate, and then drives the fixed shaft 106 hinged to it to rotate. The rotation of the fixed shaft 106 drives the threaded rod 107 and the adjusting shaft 108, and at the same time, the bearing bush 104 in contact with the adjusting shaft 108 rotates to realize the adjustment of the inclination of the bearing bush 104.

[0063] The adjusting unit includes a connecting rod 201. One end of the connecting rod 201 is fixedly connected to the adjusting rod 102, and the other end is hinged to the fixed shaft 106;

[0064] The fixed shaft 106 is provided with a through - groove 202 on its outer surface, and the connecting ring 105 penetrates through the through - groove 202 to form a closed loop.

[0065] The connecting rod 201 of the adjusting unit is used to connect the adjusting rod 102 and the fixed shaft 106. When the adjusting rod 102 is lifted and lowered, it can pull the fixed shaft 106 to rotate, and then realize the rotation of the bearing bush 104 to adjust the inclination.

[0066] A connecting block 301 is fixedly connected to the lower end of the thrust rod 101. The connecting block 301 includes a cylindrical part and a connecting part. The connecting part tapers upward from the lower end and is fixedly connected to the thrust rod 101 at the contracted end. The outer surface of the cylindrical part is provided with a tooth root 302, which meshes with a tooth ring 303. The tooth ring 303 is slidably connected to the connecting block 301 through the tooth root 302.

[0067] The connecting block 301 fixedly connected to the lower end of the thrust rod 101 is used to connect the thrust rod 101 and the tooth root 302. At the same time, the connecting block 301 is provided with a cylindrical part and a connecting part. The cylindrical part can be lifted and lowered through the sliding of the tooth root 302 on its surface and the tooth ring 303. The connecting part is arranged in a tapered shape that contracts upward from the lower end to adapt to the diameter changes of the thrust rod 101 and the tooth ring 303.

[0068] A flow guide plate 401 is fixedly connected to the lower surface of the tooth ring 303. A plurality of slots 402 are provided on the upper surface of the flow guide plate 401. A limiting plate 403 is fixedly connected to the upper surface of the flow guide plate 401.

[0069] The flow guide plate 401 fixedly connected to the lower surface of the tooth ring 303 and the slots 402 provided on the upper surface of the flow guide plate 401 are used for the passage of water source.

[0070] A limiting ring 501 is fixedly connected to the upper surface of the limiting plate 403. A plurality of balls 502 are installed on the limiting ring 501. An oil groove 503 is rotatably connected to the upper surface of the limiting ring 501. The limiting ring 501, the limiting plate 403 and the balls 502 are symmetrically arranged above and below the oil groove 503.

[0071] The limiting plate 403 is used during the operation of the water turbine. The axial water thrust generated by the water flow on the impeller, the self-weight of the rotating components, etc. are all transmitted to the support structure of the thrust bearing through the limiting plate 403, and it bears the axial load, constructs the lubrication interface and ensures the stability of the shafting. The installation quality directly affects the reliability and service life of the unit. The limiting ring 501 is used for the rolling groove fit between the balls 502 of the balls 502 and the inner and outer rings of the bearing to form an accurate motion guide, ensuring the coaxiality during the rotation of the main shaft and avoiding vibration or collision caused by deviation, such as friction between the impeller and the guide vane. At the same time, during the operation of the water turbine, the weight of the impeller, the water flow impact force, etc. are transmitted to the bearing through the main shaft. The balls 502 evenly distribute the load to avoid local stress concentration. In addition, it can also offset the axial water thrust during the operation of the water turbine, such as the axial force generated by the pressure difference in a Francis turbine, to prevent the main shaft from moving axially.

[0072] An oil cooler 601 is fixedly connected to the inner wall of the oil groove 503. The inner wall of the oil cooler 601 is fixedly connected to the fixing plate 103. The oil cooler 601 is wound into a cylinder, and a limiting sleeve 602 for fixing is installed on its outer surface.

[0073] The inner wall of the oil sump 503 is fixedly connected with an oil cooler 601 which exchanges heat with the lubricating oil through an internal cooling medium, usually water or air, to reduce the oil temperature, ensure the stability of the oil film, and reduce bearing wear. The limiting sleeve 602 installed on its outer surface is used to fix the oil cooler 601.

[0074] The outer surface of the limiting plate 403 is penetrated and connected with a feeding plate 701. The feeding plate 701 is in a Y shape, and its lower end is communicated with a connecting column 702. The inner wall of the connecting column 702 is rotatably connected with the limiting plate 403.

[0075] The feeding plate 701 installed between the water turbine bearings is used to adjust the flow rate and direction of the water flowing into the runner, thereby controlling the output and speed of the unit. The connecting column 702 communicated with the lower end is used to convey the water flow to the bearings for subsequent flow.

[0076] The lower surface of the connecting column 702 is communicated with a runner chamber 801. The inner wall of the runner chamber 801 is fixedly connected with a protective cover 802, and the protective cover 802 is rotatably connected with runner blades 803.

[0077] The runner chamber 801 is an enclosed flow channel structure that wraps the runner, used to guide the water flow to evenly flow into the runner blades in the designed direction, avoid water flow diffusion or disorder, ensure efficient energy transfer, and at the same time also has a support and fixation function. As the support structure of the water turbine flow-through components, the runner chamber 801 is connected to fixed components such as the top cover and bottom ring through bolts 905 or welding, bears the water flow impact force and the vibration load of the runner, and ensures the structural stability of the unit; the runner blades 803 rotatably connected with the protective cover 802 guide the water flow to impact or flow around through the curved surface shape, and use the kinetic energy and pressure energy of the water flow to push the runner to rotate.

[0078] The movable end of the runner blade 803 is fixedly connected with a rotating shaft 901. The upper end of the rotating shaft 901 is fixedly connected with a connecting sleeve 902. The outer surface of the connecting sleeve 902 is provided with a number of water grooves 903, and the upper surface of the connecting sleeve 902 is communicated with the limiting plate 403.

[0079] The rotating shaft 901 fixedly connected to the movable end of the runner blade 803 can be used to connect the connecting sleeve 902 and the runner blade 803. The water grooves 903 provided on the outer surface of the connecting sleeve 902 can enable the water source passing through the bearing to be discharged to the runner blade 803 through the connecting slot 402 to realize the rotation of the runner blade 803. The upper surface of the connecting sleeve 902 is communicated with the limiting plate 403 to facilitate the passage of the water source.

[0080] Flanges 904 are installed between the feeding plate 701, the connecting column 702, and the runner chamber 801, and the feeding plate 701, the connecting column 702, and the runner chamber 801 are all fixed through bolts 905.

[0081] The bolts 905 between the feeding plate 701, the connecting column 702 and the runner chamber 801 are used for fastening to form a complete support structure, preventing the bearing from shifting or loosening during operation and at the same time transmitting axial forces such as the thrust of water flow on the impeller and radial forces such as rotational vibration loads, distributing the forces borne by the bearing to the foundation structures such as the frame. Additionally, they are also used for positioning and anti-loosening, ensuring the installation position accuracy of the bearing assembly, and preventing the bolts 905 from loosening due to vibration through anti-loosening devices; the flange 904 installed between the feeding plate 701, the connecting column 702 and the runner chamber 801 is the connection interface between the bearing assemblies, transmitting torque, axial force and bending moment, ensuring the rigid connection of the shafting, and at the same time being used as the positioning and alignment reference. The machining accuracy of the mating surface of the flange 904, such as flatness and perpendicularity, directly affects the concentricity of the shafting, and it is also used for sealing and protection. The mating surface of the flange 904 usually has a sealing groove to install a rubber sealing ring or packing to prevent the leakage of lubricating oil or the intrusion of external impurities. For underwater bearings, the flange 904 sealing can prevent water flow from seeping into the bearing cavity and damaging the lubrication system.

[0082] Embodiment 2:

[0083] System installation: Install a pressure sensor on the bearing seat of the water turbine to ensure that the sensing part of the pressure sensor is in close contact with the bearing seat and can accurately measure the pressure borne by the bearing. Embed a temperature sensor at a suitable position on the surface of the bearing bush 204. The temperature sensor uses a high-temperature resistant and waterproof model to adapt to the working environment of the water turbine. Install the speed sensor near the main shaft to measure the main shaft speed through non-contact induction. Install the control module in the electrical control cabinet of the water turbine to ensure its stable working environment and avoid electromagnetic interference; install the hydraulic regulating device in the execution module near the bearing bush 204 for easy connection of the hydraulic cylinder to the mechanical transmission mechanism. The mechanical transmission mechanism is accurately installed and adjusted with the support seat of the bearing bush 204 to ensure its transmission accuracy.

[0084] System debugging: After the system installation is completed, calibrate various sensors in the monitoring module to ensure the accuracy of their measurement data; check whether the output signals of the sensors are normal by simulating different pressure, temperature, speed and load conditions; debug the program of the control module, input different simulated data, and check whether the control module can accurately analyze the data according to the preset algorithm and generate correct control instructions; conduct no-load and load debugging on the execution module, check whether the pressure output of the hydraulic regulating device is stable, whether the movement of the mechanical transmission mechanism is smooth, and whether the adjustment of the inclination angle of the bearing bush 204 meets the expectations; during the debugging process, verify the data fed back by the angle sensor to ensure the accuracy of the closed-loop control.

[0085] System operation: After the water turbine starts running, the monitoring module collects the operation parameters of the water turbine in real time and transmits the data to the control module; the control module continuously analyzes and processes the received data and compares it with the pre-stored optimal working condition data; for example, when the load of the water turbine suddenly increases, the control module analyzes the data of the pressure sensor and the speed sensor, and judges that the bearing bush 204 needs a larger tilt angle at this time to adapt to the increased load; the control module immediately generates corresponding control instructions and sends them to the execution module; the hydraulic regulation device in the execution module adjusts the flow rate and pressure of the hydraulic oil according to the control instructions, pushes the piston rod of the hydraulic cylinder to extend, and the piston rod drives the mechanical transmission mechanism to move, so that the bearing bush 204 tilts according to the preset angle; during the tilting process of the bearing bush 204, the angle sensor monitors the tilt angle of the bearing bush 204 in real time and feeds back the data to the control module, and the control module fine-tunes the hydraulic regulation device according to the feedback data to ensure that the tilt angle of the bearing bush 204 reaches the optimal value; when the working condition of the water turbine changes, the system repeats the above process to automatically adjust the tilt angle of the bearing bush 204 in real time to ensure the stable and efficient operation of the water turbine.

[0086] Embodiment 3:

[0087] Install an adjustment mechanism on the bearing housing, reliably connect one end of the adjustment screw to the connection point on the back of the bearing bush 204, then install the adjustment nut, and ensure that the adjustment screw can rotate and translate smoothly in the adjustment nut; install a clearance sensor, a temperature sensor and a vibration sensor, install the clearance sensor at a suitable position between the bearing bush 204 and the journal to ensure that the clearance of the bearing bush 204 can be accurately measured; install the temperature sensors on the surface of the bearing bush 204 and the bearing housing respectively to monitor the temperature of the bearing bush 204 and the bearing housing; install the vibration sensor at a position on the shafting where the shaft vibration can be effectively monitored. After all the sensors are installed, connect the signal lines to ensure normal signal transmission; install the control system (PLC), the human-machine interface and the electric drive device, make the correct electrical connection between the PLC, the sensors, the electric drive device and the human-machine interface, and debug the system according to the preset program to ensure that all components can communicate and cooperate normally. During the debugging process, calibrate the sensors and set parameters such as the standard value of the clearance of the bearing bush 204, the thresholds of temperature and vibration;

[0088] S1. After the water turbine starts running, the clearance sensor, the temperature sensor and the vibration sensor collect the data of the clearance, temperature and shaft vibration of the bearing bush 204 in real time and transmit these data to the control system (PLC);

[0089] S2. The PLC analyzes and processes the received data and compares it with the preset standard values and thresholds. For example, when the clearance value of the bearing bush 204 feedback by the clearance sensor exceeds the preset range, the PLC calculates the position change amount of the bearing bush 204 that needs to be adjusted according to the magnitude and direction of the deviation, and then sends a control instruction to the electric drive device.

[0090] S3. After receiving the control instruction, the electric drive device drives the adjusting nut of the adjusting mechanism to rotate, drives the adjusting screw to move, thereby adjusting the position of the bearing bush 204 and changing the clearance of the bearing bush 204. During the adjustment process, the clearance sensor continuously monitors the change of the clearance of the bearing bush 204 and feeds the real-time data back to the PLC. When the clearance of the bearing bush 204 reaches the preset standard value, the PLC controls the electric drive device to stop working.

[0091] The usage process of an adaptive multi-condition water turbine composite bearing device provided by the present invention is as follows:

[0092] When adjusting the clearance, the lifting and lowering of the thrust rod 101 can drive the adjusting rod 102 and the connecting rod 201 to lift and lower. During the lifting and lowering process of the connecting rod 201, it drives the fixed shaft 106 to lift and lower. While the fixed shaft 106 is lifting and lowering, it drives the threaded rod 107 and the adjusting shaft 108 that are threadedly connected to it to lift and lower. Since the adjusting shaft 108 is telescopic, it will drive the bearing bush 104 to expand during the lifting and lowering process. If it is necessary to adjust the clearance smaller, the spring between the bearing bushes 104 will reset it due to its elastic effect;

[0093] When adjusting the inclination, the adjusting ring slides. The sliding of the adjusting ring drives the connecting rod 201 to rotate, and then drives the fixed shaft 106 hinged to it to rotate. The rotation of the fixed shaft 106 drives the threaded rod 107 and the adjusting shaft 108, and at the same time the bearing bush 104 in contact with the adjusting shaft 108 rotates to realize the adjustment of the inclination of the bearing bush 104;

[0094] The connecting rod 201 of the adjusting unit is used to connect the adjusting rod 102 and the fixed shaft 106. When the adjusting rod 102 is lifted and lowered, it can pull the fixed shaft 106 to rotate, and then realize the rotation of the bearing bush 104 to realize the adjustment of the inclination;

[0095] The connecting block 301 fixedly connected to the lower end of the thrust rod 101 is used to connect the thrust rod 101 and the tooth root 302. At the same time, the connecting block 301 is provided with a cylindrical part and a connecting part. The cylindrical part can realize lifting through the sliding of the tooth root 302 on its surface and the tooth ring 303, and its connecting part is set to be a reduced diameter shape that shrinks upward from the lower end to adapt to the diameter change of the thrust rod 101 and the tooth ring 303;

[0096] The flow guide plate 401 fixedly connected to the lower surface of the gear ring 303 and the slotted groove 402 provided on the upper surface of the flow guide plate 401 are used for the passage of water source.

[0097] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or communication with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0098] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the drawings, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements on some of the technical features. Any equivalent structure directly or indirectly using the content of the specification and drawings of the present invention in other related technical fields is equally within the scope of the patent protection of the present invention.

Claims

1. An adaptive multi-condition hydraulic turbine composite bearing device, characterized in that: include: A thrust rod (101) having an outer surface slidably connected to an adjustment rod (102), wherein an adjustment unit is fixedly connected to the outer surface of the adjustment rod (102); A fixed plate (103) with an adjustment unit mounted on the inner wall and a bearing bush (104) slidably connected to the lower surface; A connecting ring (105) is fixedly connected to the inner wall of the fixing plate (103), and a fixing shaft (106) is penetrated and connected to the outer surface; The threaded rod (107) has an upper end threadedly connected to the fixed shaft (106), and the lower end of the threaded rod (107) is fixedly connected to an adjustment shaft (108), and the adjustment shaft (108) shrinks upward from the lower surface to form a variable diameter shape.

2. An adaptive multi-operating condition water turbine composite bearing device according to claim 1, characterized in that: The adjustment unit comprises a connecting rod (201), one end of the connecting rod (201) is fixedly connected to the adjustment rod (102), and the other end of the connecting rod (201) is hinged to the fixed shaft (106); The fixed shaft (106) has an outer surface provided with a through groove (202), and the connecting ring (105) passes through the through groove (202) to form a closed loop.

3. An adaptive multi-condition water turbine composite bearing device according to claim 1, characterized in that: The lower end of the thrust rod (101) is fixedly connected to a connecting block (301), and the connecting block (301) comprises a column part and a connecting part, the connecting part shrinks upward from the lower end to form a variable diameter shape, and the shrinking end is fixedly connected to the thrust rod (101), and the outer surface of the column part is provided with a tooth root (302), and the tooth root (302) is meshed with a tooth ring (303), and the tooth ring (303) and the connecting block (301) are slidably connected via the tooth root (302).

4. An adaptive multi-operating condition water turbine composite bearing device according to claim 3, characterized in that: The lower surface of the gear ring (303) is fixedly connected to a guide plate (401), the upper surface of the guide plate (401) is provided with a plurality of slots (402), and the upper surface of the guide plate (401) is fixedly connected to a limit plate (403).

5. An adaptive multi-operating condition water turbine composite bearing device according to claim 4, characterized in that: The upper surface of the limit plate (403) is fixedly connected to a limit ring (501), a plurality of balls (502) are mounted on the limit ring (501), the upper surface of the limit ring (501) is rotatably connected to an oil groove (503), and the limit ring (501), the limit plate (403) and the balls (502) are symmetrical about the oil groove (503) in an upper and lower direction.

6. An adaptive multi-operating condition water turbine composite bearing device according to claim 5, characterized in that: The inner wall of the oil groove (503) is fixedly connected to an oil cooler (601), and the inner wall of the oil cooler (601) is fixedly connected to a fixed plate (103). The oil cooler (601) is wound into a column, and a limiting sleeve (602) for fixing is installed on the outer surface.

7. An adaptive multi-operating condition water turbine composite bearing device according to claim 4, characterized in that: The outer surface of the limiting plate (403) is connected with a loading plate (701), the loading plate (701) is Y-shaped, and the lower end portion is connected with a connecting column (702), and the inner wall of the connecting column (702) is rotatably connected to the limiting plate (403).

8. An adaptive multi-operating condition water turbine composite bearing device according to claim 7, characterized in that: The lower surface of the connecting column (702) is connected to a wheel chamber (801), the inner wall of the wheel chamber (801) is fixedly connected to a protective cover (802), and the protective cover (802) is rotatably connected to a wheel plate (803).

9. An adaptive multi-operating condition water turbine composite bearing device according to claim 8, characterized in that: The movable end of the rotating wheel (803) is fixedly connected to a rotating shaft (901), the upper end of the rotating shaft (901) is fixedly connected to a connecting sleeve (902), the outer surface of the connecting sleeve (902) is provided with a plurality of water grooves (903), and the upper surface of the connecting sleeve (902) is connected to a limiting plate (403).

10. An adaptive multi-operating condition water turbine composite bearing device according to claim 9, characterized in that: Flanges (904) are installed between the loading plate (701), the connecting column (702) and the wheel chamber (801), and the loading plate (701), the connecting column (702) and the wheel chamber (801) are fixed by bolts (905).

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