Connecting device for high-oil-pressure oil head and Kaplan turbine

Abstract

The invention discloses a connecting device for a high-oil-pressure oil head and a Kaplan turbine, and relates to the technical field of water turbines and related equipment thereof. One end of the oil head is connected with a large shaft of a generator, and a first connecting oil pipe and a second connecting oil pipe are arranged in the oil head; a circle of oil grooves are formed in the first connecting oil pipe and the second connecting oil pipe and communicated with the internal pipeline, the outer portions of the first connecting oil pipe and the second connecting oil pipe are connected with a rotary connector, and an oil tank is arranged at the top of the oil head. The connecting device of the high-oil-pressure oil head and the Kaplan turbine is good in sealing effect. The connecting device of the high-oil-pressure oil head and the Kaplan turbine is high in oil pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic turbines and their related equipment, and particularly to a connecting device between a high-oil-pressure oil receiver and a Kaplan turbine. Background Art

[0002] Due to the increasing oil pressure for the operation (guide vane and blade) of the hydraulic turbine, the higher the oil pressure, the smaller the servomotor (guide vane and blade) device can be, reducing the cost investment and bringing convenience to installation and maintenance at the same time. However, with the high-oil-pressure pipeline, the original structure form of the oil receiver is no longer suitable. The structural gap is relatively large, and the oil leakage amount increases with the increase of pressure, which will increase the starting frequency of the oil pump of the governor, leading to easy damage of the oil pump and an increase in on-site noise.

[0003] In the prior art, a blade universal feedback rod of a hydraulic turbine runner oil receiver disclosed in the patent publication number CN222067406U includes a front oil tank. One end of the front oil tank is provided with a bushing, and an inner operating oil pipe passes through it rotatably at the other end. One end of the inner operating oil pipe is connected with a conversion bearing, one end of the conversion bearing is connected with a universal bearing, and one end of the universal bearing is connected with a feedback rod that slides through the bushing. However, this oil receiver does not have an anti-leakage structure, and it is prone to oil leakage under the condition of high oil pressure inside the hydraulic turbine. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem of high oil pressure of the blade servomotor of the hydraulic turbine. An oil receiver device is required for oil circuit distribution between the servomotor and the governor. A rotary joint is provided in the oil receiver device of the present invention. This rotary joint has a small sealing gap and less oil leakage, and is suitable for high oil pressure with a working pressure below 20 MPa and a rotational speed of 300 r / min, providing a connecting device between a high-oil-pressure oil receiver and a Kaplan turbine with good sealing effect.

[0005] Another purpose of the present invention is to solve the problem that the oil receiver is not stable enough. The outer part of the rotary joint of the present invention does not rotate, while the inner part rotates. Oil grooves are provided in the outer and inner pipelines for communication, so that less oil leaks, providing a connecting device between a high-oil-pressure oil receiver and a Kaplan turbine with a more stable structure.

[0006] To achieve the above purposes, the present invention provides the following technical solution: A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine, including that one end of the oil receiver is connected to the generator main shaft. A first connecting oil pipe and a second connecting oil pipe are arranged inside the oil receiver. A circle of oil grooves is arranged in the first connecting oil pipe and the second connecting oil pipe for communication with the internal pipeline. The outer parts of the first connecting oil pipe and the second connecting oil pipe are connected with a rotary joint, and an oil tank is arranged at the top of the oil receiver.

[0007] Preferably, one end of the rotary joint fixes the first bearing, and below the first bearing is the first limit block, which has an L-shaped structure.

[0008] Preferably, the upper part of the rotary joint is provided with a second bearing, and the second bearing fixes the middle position of the oil receiver.

[0009] Preferably, an oil return pipe is arranged on one side of the rotary joint, and on the other side of the oil return pipe are the blade closing oil pipe and the blade opening oil pipe.

[0010] Preferably, an overflow oil pipe is arranged on one side of the oil tank, and a drain pipe is arranged on the side of the oil receiver close to the large shaft of the generator.

[0011] Preferably, the center of the oil receiver is the main pipe, and the other end of the main pipe is connected to the large shaft of the generator.

[0012] Preferably, a third bearing is fixed above the main pipe, a bearing sleeve is arranged beside the third bearing, and above the third bearing is the bearing cover.

[0013] Preferably, a fastener is connected above the bearing cover, and above the fastener is the end cover.

[0014] Preferably, one end of the large shaft of the generator is connected to the water turbine, and a large shaft of the water turbine is arranged on the water turbine.

[0015] Preferably, an oil supply pipe and an operating oil pipe are arranged inside the large shaft of the water turbine, and on the other side of the large shaft of the water turbine is the blade servomotor.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing an oil receiver device of the rotary joint with the characteristics of small sealing gap and less oil leakage, the present invention effectively solves the problem of high oil pressure of the blade servomotor of the water turbine, making it applicable to high oil pressure scenarios with a working pressure below 20 MPa and a rotational speed of 300 r / min, and achieving the technical effect of good structural sealing of the connection device between the high oil pressure oil receiver and the Kaplan turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the upper part of the water turbine and the oil receiver of the present invention.

[0018] Figure 2 It is a schematic diagram of the middle part of the water turbine and the oil receiver of the present invention.

[0019] Figure 3 It is a schematic diagram of the lower part of the water turbine and the oil receiver of the present invention.

[0020] Figure 4 It is a partially enlarged view C of the present invention.

[0021] Figure 5 It is a partially enlarged view D of the present invention.

[0022] Figure 6 This is the enlarged view E of the local structure of the present invention.

[0023] Figure 7 This is the enlarged view F of the local structure of the present invention.

[0024] In the figure: 1. Turbine; 11. Blade servomotor; 12. Turbine main shaft; 13. Oil supply pipe; 14. Operating oil pipe; 15. Generator main shaft; 2. Oil receiver; 21. Blade closing oil pipe; 22. Blade opening oil pipe; 23. Oil overflow pipe; 24. Oil tank; 25. Oil return pipe; 26. Oil drain pipe; 27. Second bearing; 28. Main pipe; 3. Rotary joint; 4. First connecting oil pipe; 5. Second connecting oil pipe; 6. First bearing; 7. First limit block; 8. Bearing sleeve; 81. End cover; 82. Fastener; 83. Bearing cover; 84. Third bearing. Specific embodiments

[0025] The technical solutions of the present invention will be further specifically described below through specific embodiments in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0026] Embodiment 1: Referring to Figures 1 to 7 , this embodiment relates to a connection device between a high-oil-pressure oil receiver and a Kaplan turbine, which can meet the operation requirements of the turbine under high-oil-pressure conditions. The connection device between the high-oil-pressure oil receiver and the Kaplan turbine mainly includes an oil receiver 2, one end of which is connected to the generator main shaft 15. Inside the oil receiver 2, a first connecting oil pipe 4 and a second connecting oil pipe 5 are respectively arranged, and a rotary joint 3 is arranged outside the two oil pipes. A circle of oil grooves is arranged inside the first connecting oil pipe 4 and the second connecting oil pipe 5 and communicated with the internal pipeline. At the same time, an oil tank 24 is installed on the top of the oil receiver 2, and the oil tank 24 plays the role of storing and supplying oil.

[0027] The governor accesses the rotary joint 3 through two oil pipes of the blade switch, and the rotary joint 3 is responsible for the connection operation of the oil circuit. Specifically, it connects the oil circuit to the operating oil pipe 14, the hub oil supply pipe (oil supply pipe 13), and the main shaft composed of the turbine main shaft 12 and the generator main shaft 15 respectively, so as to form two oil circuits, and finally transports the oil to the switch cavity of the blade servomotor 11. This process ensures that the oil pressure can be accurately and stably transmitted to the blade servomotor 11, realizes the precise control of the blade, ensures that the turbine can maintain a good operating state under different working conditions, and maintains a stable power generation efficiency.

[0028] The stroke information of the blades can be transmitted to the displacement transmitter on the oil receiver 2 through the hub oil supply pipe (oil supply pipe 13). The displacement transmitter then feeds back these signals to the central control room and the speed regulator, so that the operator can monitor the operating status of the blades in real time in the central control room, and adjust the parameters of the speed regulator in time according to the feedback information to ensure that the turbine always runs at the optimal speed, thereby improving the stability and reliability of the entire hydro-generator set, and also facilitating the timely detection and handling of possible blade failures, thereby avoiding a decrease in power generation efficiency or equipment damage caused by blade failures.

[0029] By using the hub oil supply pipe (oil supply pipe 13), lubricating oil can be directly drawn from the oil tank 24 in the oil receiver 2 and poured into the runner. This method ensures that there is always sufficient lubricating oil inside the runner, reduces friction between the runner parts, reduces wear, and extends the service life of the runner. At the same time, it also ensures the stability and safety of the runner when rotating at high speed, effectively avoids runner failures caused by poor lubrication, and improves the reliability of turbine operation.

[0030] In order to remove the part of the high-pressure oil that leaks through the small gap, an oil return pipe 25 is provided in the rotary joint 3. The oil return pipe 25 discharges the leaked oil back into the oil tank 24, thereby maintaining the oil level in the oil tank 24 at a certain level. When the oil level in the oil tank 24 exceeds the set value, the excess oil is discharged to the governor oil collection device through the oil overflow pipe 23. This oil discharge and oil overflow design not only avoids the waste of oil, but also prevents the excessive pressure in the oil tank 24 caused by excessive oil, ensuring the safe and stable operation of the entire oil system, and at the same time facilitates the centralized management and recycling of oil, improves the use efficiency of oil, and reduces operating costs.

[0031] The oil receiver 2 is installed at the top of the generator, and its rotating part is fixed to the upper shaft of the generator through a reasonable fixing structure. This installation method enables the oil receiver 2 to rotate synchronously with the main shaft 15 of the generator, ensuring the stability and reliability of the oil circuit connection, while also facilitating the oil circuit transmission between the oil receiver 2 and the main shaft 15 of the generator, reducing the risk of oil circuit leakage caused by relative movement, and ensuring the efficient operation of the entire system.

[0032] A first bearing 6 is fixed to one end of the rotary joint 3, and a first limit block 7 is arranged below the first bearing 6, and the first limit block 7 adopts an L-shaped structure. This design can effectively support and limit the rotary joint 3, ensure the stability of the rotary joint 3 during the rotation process, and avoid the radial force and axial force generated by the rotation causing the rotary joint 3 to be displaced or shaken, thereby ensuring the accuracy of the oil circuit connection and improving the reliability of the entire system. The first limit block 7 of the L-shaped structure has good rigidity and supporting performance, can provide sufficient limiting effect in a limited space, and is also easy to install and maintain.

[0033] A second bearing 27 is provided at the upper part of the rotary joint 3, and the second bearing 27 fixes the middle position of the oil receiver 2. The support of the second bearing 27 further enhances the stability of the oil receiver 2, so that it can maintain good concentricity during the rotation process, reduce the vibration and leakage risks of the oil circuit caused by the shaking of the oil receiver 2, and ensure the stable operation of the oil circuit system. At the same time, the provision of the second bearing 27 also disperses the load borne by the oil receiver 2, prolongs the service life of the oil receiver 2, and improves the reliability of the entire structure.

[0034] A return oil pipe 25 is provided on one side of the rotary joint 3, and the other side of the return oil pipe 25 is provided with a blade closing oil pipe 21 and a blade opening oil pipe 22. Such a reasonable layout design of the oil pipes makes the oil path clear and is convenient for installation and maintenance. The blade closing oil pipe 21 and the blade opening oil pipe 22 are responsible for controlling the closing and opening actions of the blades respectively. Through the connection between the rotary joint 3 and the oil circuit system, the oil pressure signal can be accurately transmitted to the blade servomotor 11, so as to realize precise control of the blades, ensure that the turbine can quickly and accurately adjust the blade angle under different working conditions, and improve the regulation performance and operation efficiency of the turbine.

[0035] An oil overflow pipe 23 is provided on one side of the oil tank 24 to discharge excess oil and maintain a stable oil level in the oil tank 24. An oil drain pipe 26 is provided on the side of the oil receiver 2 close to the generator shaft 15. The oil drain pipe 26 can discharge the oil in the oil receiver 2 in time to prevent excessive accumulation of oil in the oil receiver 2 and affect its normal operation. The setting and layout of these pipelines fully consider the flow characteristics of the oil and the operating requirements of the system, ensuring the smooth operation of the entire oil system, while also facilitating the management and monitoring of the oil, and improving the safety and reliability of the system.

[0036] The center of the oil receiver 2 is the main pipe 28, and the other end of the main pipe 28 is connected to the generator shaft 15. The main pipe 28 plays an important supporting and connecting role in the entire structure. It can not only bear the weight and load of the oil receiver 2, but also ensure the coaxiality between the oil receiver 2 and the generator shaft 15, and ensure the accuracy of oil transmission. Through the connection of the main pipe 28, the oil receiver 2 can form a whole with the generator shaft 15 and work together, which improves the stability and reliability of the entire hydro-generator set, and also facilitates the installation and disassembly of the oil receiver 2, reducing maintenance costs and workload.

[0037] Example 2: Reference Figures 1 to 7, The connecting device between the high-oil-pressure oil receiver and the Kaplan turbine mainly includes the oil receiver 2, one end of which is connected to the generator main shaft 15. This connection method ensures that the oil receiver 2 can rotate synchronously with the generator main shaft 15, realizing the stable transmission of the oil circuit. Inside the oil receiver 2, a first connecting oil pipe 4 and a second connecting oil pipe 5 are respectively arranged. A circle of oil grooves is arranged in the first connecting oil pipe 4 and the second connecting oil pipe 5 and communicated with the internal pipeline. The setting of the rotary joint 3 enables the oil circuit to remain connected during the rotation of the oil receiver 2, ensuring the normal flow of oil. At the same time, an oil tank 24 is installed at the top of the oil receiver 2. The oil tank 24 plays an important role in storing and supplying oil in the whole system, providing sufficient oil source for the normal operation of the oil circuit system.

[0038] The governor accesses the rotary joint 3 through two oil pipes of the blade switch. The rotary joint 3 is responsible for connecting the oil circuit. Specifically, it connects the oil circuit to the operating oil pipe 14, the hub oil supply pipe (oil supply pipe 13), and the main shaft composed of the turbine main shaft 12 and the generator main shaft 15 respectively, thus forming two oil circuits and finally delivering the oil to the switch cavity of the blade servomotor 11. This process ensures that the oil pressure can be accurately and stably transmitted to the blade servomotor 11, realizing the precise control of the blade, ensuring that the turbine can maintain a good operating state under different working conditions, and maintaining a stable power generation efficiency. Through this ingenious oil circuit connection design, the whole system can operate efficiently and coordinately, improving the regulation performance and operating stability of the turbine.

[0039] Through the hub oil supply pipe (oil supply pipe 13), the stroke information of the blade can be transmitted to the displacement transmitter on the oil receiver 2. The displacement transmitter then feeds back these signals to the central control room and the governor, enabling the operator to monitor the operating state of the blade in real time in the central control room and adjust the parameters of the governor in a timely manner according to the feedback information, ensuring that the turbine always operates at the best speed. This feedback mechanism improves the stability and reliability of the whole hydro-generator unit. At the same time, it is also convenient to detect and handle possible faults of the blade in a timely manner, avoiding the decrease of power generation efficiency or equipment damage caused by blade faults, and effectively ensuring the safe operation of the turbine.

[0040] Using the hub oil supply pipe (oil supply pipe 13), lubricating oil can be directly extracted from the oil tank 24 inside the oil receiver 2 and poured into the runner. This method ensures that there is always sufficient lubricating oil inside the runner, reduces the friction between the runner components, reduces wear, and extends the service life of the runner. At the same time, it also ensures the stability and safety of the runner during high-speed rotation, effectively avoiding runner faults caused by poor lubrication, improving the reliability of the turbine operation, and providing a strong guarantee for the long-term stable operation of the turbine.

[0041] In order to remove the part of the high-pressure oil that seeps through the small gap, an oil return pipe 25 is provided in the rotary joint 3. The oil return pipe 25 discharges the seeping oil back into the oil tank 24, thereby maintaining the oil level in the oil tank 24 at a certain level. When the oil level in the oil tank 24 exceeds the set value, the excess oil is discharged to the governor oil collection device through the oil overflow pipe 23. This oil discharge and oil overflow design not only avoids the waste of oil, but also prevents the excessive pressure in the oil tank 24 caused by excessive oil, thereby ensuring the safe and stable operation of the entire oil circuit system. At the same time, it is also convenient for centralized management and recycling of oil, improves the efficiency of oil use, reduces operating costs, and realizes the rational use of resources.

[0042] The oil receiver 2 is installed at the top of the generator, and its rotating part is fixed to the upper shaft of the generator through a reasonable fixing structure. This installation method enables the oil receiver 2 to rotate synchronously with the main shaft 15 of the generator, ensuring the stability and reliability of the oil circuit connection. At the same time, it also facilitates the oil circuit transmission between the oil receiver 2 and the main shaft 15 of the generator, reduces the risk of oil circuit leakage caused by relative movement, ensures the efficient operation of the entire system, and improves the overall performance and reliability of the system.

[0043] A first bearing 6 is fixed to one end of the rotary joint 3, and a first limit block 7 is arranged below the first bearing 6, and the first limit block 7 adopts an L-shaped structure. This design can effectively support and limit the rotary joint 3, and ensure the stability of the rotary joint 3 during the rotation process. It avoids the radial force and axial force generated by the rotation from causing the rotary joint 3 to be displaced or shaken, thereby ensuring the accuracy of the oil circuit connection and improving the reliability of the entire system. The first limit block 7 of the L-shaped structure has good rigidity and supporting performance, can provide sufficient limiting effect in a limited space, and is also easy to install and maintain, providing a strong guarantee for the stable operation of the system.

[0044] A second bearing 27 is provided at the upper part of the rotary joint 3, and the second bearing 27 fixes the middle position of the oil receiver 2. The support of the second bearing 27 further enhances the stability of the oil receiver 2, so that it can maintain good concentricity during the rotation process. The vibration and leakage risks of the oil circuit caused by the shaking of the oil receiver 2 are reduced, ensuring the stable operation of the oil circuit system. At the same time, the setting of the second bearing 27 also disperses the load borne by the oil receiver 2, prolongs the service life of the oil receiver 2, improves the reliability of the entire structure, and reduces the maintenance cost and repair frequency of the equipment.

[0045] On one side of the rotary joint 3, there is an oil return pipe 25. On the other side of the oil return pipe 25, there are respectively a blade closing oil pipe 21 and a blade opening oil pipe 22. Such a layout design of the oil pipes is reasonable, making the oil flow direction clear and facilitating installation and maintenance. The blade closing oil pipe 21 and the blade opening oil pipe 22 are respectively responsible for controlling the closing and opening actions of the blade. Through the connection of the rotary joint 3 with the oil circuit system, the oil pressure signal can be accurately transmitted to the blade servomotor 11, realizing the precise control of the blade. It ensures that the water turbine can quickly and accurately adjust the blade angle under different working conditions, improves the regulation performance and operation efficiency of the water turbine, and meets the operation requirements of the water turbine under various complex working conditions.

[0046] On one side of the oil tank 24, there is an overflow oil pipe 23 for discharging excess oil to keep the oil volume in the oil tank 24 stable. On the side of the oil receiver 2 close to the generator main shaft 15, there is a drain pipe 26 which can timely discharge the oil in the oil receiver 2 to prevent excessive oil accumulation in the oil receiver 2 and affect its normal operation. The setting and layout of these pipes fully consider the flow characteristics of the oil and the operation requirements of the system, ensuring the smooth operation of the entire oil circuit system. At the same time, it is also convenient for oil management and monitoring, improving the safety and reliability of the system, and providing strong support for the stable operation of the water turbine.

[0047] The center of the oil receiver 2 is the main pipe 28, and the other end of the main pipe 28 is connected to the generator main shaft 15. The main pipe 28 plays an important role in support and connection in the whole structure. It can not only bear the weight and load of the oil receiver 2, but also ensure the coaxiality between the oil receiver 2 and the generator main shaft 15, ensuring the accuracy of oil circuit transmission. Through the connection of the main pipe 28, the oil receiver 2 can form an integral with the generator main shaft 15 and work together, improving the stability and reliability of the entire hydro-generator unit. At the same time, it is also convenient for the installation and disassembly of the oil receiver 2, reducing the maintenance cost and workload, and improving the maintenance efficiency and operation benefit of the equipment.

[0048] Above the main pipe 28, a third bearing 84 is installed through a reliable fixing method. The setting of the third bearing 84 plays a key role in the stable operation of the whole structure. It can effectively bear various forces transmitted from the main pipe 28 and the oil receiver 2, ensure the precise operation of the rotating components, and reduce the energy loss and component wear caused by friction and vibration. Next to the third bearing 84, the bearing sleeve 8 is reasonably arranged. The bearing sleeve 8 cooperates with the third bearing 84, further enhancing the support and protection of the rotating components, and at the same time playing a certain positioning and guiding function to ensure the relative positions of each component are accurate and maintain the stable operation state of the whole system.

[0049] Above the third bearing 84 is the bearing cover 83. The bearing cover 83 is combined with the third bearing 84 through a tight connection structure, providing a relatively enclosed and stable operating environment for the third bearing 84, preventing external impurities from entering the bearing interior, avoiding damage to the bearing and affecting its normal operation. At the same time, the bearing cover 83 also plays a certain role in fixing and positioning. Together with the bearing sleeve 8, it jointly ensures the stability of the third bearing 84 during operation, extends its service life, and improves the reliability and durability of the entire structure.

[0050] Above the bearing cover 83 is connected with a fastener 82. The fastener 82 is made of high-strength and fatigue-resistant materials. Through a reasonable fastening method, such as bolt connection, etc., the bearing cover 83 is tightly fixed in the corresponding position to ensure that it will not loosen due to vibration or other reasons during the operation of the water turbine, guaranteeing the stability of the entire bearing structure. Above the fastener 82 is the end cover 81. The end cover 81 cooperates with other parts of the oil receiver 2 to form a complete external structure, playing a role in protecting and encapsulating the internal bearing, oil pipe and other components. At the same time, it also makes the entire oil receiver structure more compact and beautiful, facilitating installation and maintenance.

[0051] One end of the generator main shaft 15 is connected to the water turbine 1. This connection method enables the water turbine 1 to efficiently convert water energy into mechanical energy and transmit it to the generator through the generator main shaft 15, realizing the conversion of water energy to electrical energy. On the water turbine 1, there is a water turbine main shaft 12. As one of the core components of the water turbine 1, the water turbine main shaft 12 undertakes the important tasks of transmitting torque and supporting related components. Inside it, there are ingeniously arranged an oil supply pipe 13 and an operating oil pipe 14. These two oil pipes play a crucial role during the operation of the water turbine.

[0052] The oil supply pipe 13 is mainly responsible for transporting the oil in the oil tank 24 to each part that needs lubrication and cooling, ensuring that during the high-speed operation of the water turbine, good lubrication can be maintained between various components, reducing friction and wear. At the same time, it also helps to take away the heat generated during friction and the conversion of water energy, ensuring the normal working temperature of the water turbine. The operating oil pipe 14 is connected to the speed regulation system and is used to transmit the control signal of the governor to achieve precise adjustment of the water turbine speed to adapt to different water heads and load conditions, ensuring the stable operation of the generator set.

[0053] On the other side of the large shaft 12 of the water turbine, a blade servomotor 11 is installed. The blade servomotor 11 is a key actuator in the water turbine regulating system. It receives the oil pressure signal transmitted through the operating oil pipe 14 and drives the blade to rotate, thereby changing the blade angle of the water turbine and realizing the regulation of the water turbine flow rate and rotational speed. This structural design enables the water turbine to quickly and accurately adjust the blade angle according to the actual operating conditions, improving the regulation performance and operating efficiency of the water turbine and ensuring the stable and efficient operation of the generator set under different working conditions.

[0054] In summary, the connection device structure of the high-oil-pressure oil receiver and the Kaplan turbine in this embodiment realizes the effective control and protection during the operation of the water turbine by optimizing the design of the bearings and related components, as well as reasonably arranging the connection structure of the large shafts of the water turbine and the generator and the internal oil pipe system. It improves the performance and reliability of the entire hydro-generator set and has good application prospects and popularization value. In practical applications, the parameters such as the dimensions and materials of each component can be further optimized and adjusted according to the specific water turbine model and operating requirements to better meet the usage needs in different scenarios.

[0055] For those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

Claims

1. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine, characterized in that The oil receiver has one end connected to the large shaft of the generator. Inside the oil receiver, a first connecting oil pipe and a second connecting oil pipe are provided. A circular oil groove is arranged inside the first connecting oil pipe and the second connecting oil pipe to communicate with the internal pipeline. The outside of the first connecting oil pipe and the second connecting oil pipe is a rotary joint. A fuel tank is arranged at the top of the oil receiver.

2. The connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 1, wherein, One end of the rotary joint fixes a first bearing. Below the first bearing is a first limit block, and the first limit block is in an L-shaped structure.

3. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 1 or 2, characterized in that, A second bearing is arranged on the upper part of the rotary joint, and the second bearing fixes the middle position of the oil receiver.

4. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 1 or 2, characterized in that, An oil return pipe is arranged on one side of the rotary joint, and on the other side of the oil return pipe are a blade closing oil pipe and a blade opening oil pipe.

5. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 4, characterized in that, An overflow oil pipe is arranged on one side of the fuel tank, and a drain pipe is arranged on the side of the oil receiver close to the large shaft of the generator.

6. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 1 or 5, characterized in that, The center of the oil receiver is a main pipe, and the other end of the main pipe is connected to the large shaft of the generator.

7. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 6, characterized in that, A third bearing is fixed above the main pipe, a bearing sleeve is arranged beside the third bearing, and a bearing cover is above the third bearing.

8. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 7, characterized in that, A fastener is connected above the bearing cover, and an end cover is above the fastener.

9. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 1 or 8, characterized in that, One end of the large shaft of the generator is connected to a water turbine, and a large shaft of the water turbine is arranged on the water turbine.

10. A connecting device between a high-oil-pressure oil receiver and a Kaplan turbine according to claim 1 or 8, characterized in that, An oil supply pipe and an operating oil pipe are arranged inside the large shaft of the water turbine, and a blade servomotor is on the other side of the large shaft of the water turbine.

Images