High-power high-rotating-speed stacked water eddy current load dynamometer

Abstract

The invention, which relates to the technical field of the water eddy current dynamometer, discloses a high-power high-rotation-speed superposed water eddy current load dynamometer comprising a base, a dynamometer main body and a rotating shaft, the rotating shaft is installed at the output end of the dynamometer main body, and a driving locking shaft head is installed at the outer end of the rotating shaft. The outer supporting diameter adjusting arc plate is arranged on the outer side of the driving locking shaft head, and the pull-back pressing arc strip plate is installed on the outer side of the outer supporting diameter adjusting arc plate. The disc body locking assembly is arranged at the outer end of the rotating shaft, after the rotor sleeve and the disc body are installed, the disc body is stably limited by the disc body locking assembly, vibration generated in the high-speed rotating process of the disc body is effectively reduced through multiple stable limiting, it is ensured that the disc body is kept balanced in the rotating process, and the rotating speed is improved. The stable disc body can reduce the energy loss caused by vibration or imbalance, so that the dynamometer can respond to the output change of the tested equipment more quickly in the testing process, and the testing stability and accuracy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of water eddy current dynamometers, in particular to a high-power and high-speed superimposed water eddy current load dynamometer. Background Art

[0002] A water vortex dynamometer is a test device that uses water flow to generate vortices and measures the hydraulic resistance of the vortices to infer the power output of power equipment. The water vortex dynamometer enhances the vortex effect or improves test accuracy by superimposing multiple water tanks, adjusting the water flow path, or adding additional sensors. It is widely used in the research, testing, and development of power equipment such as automobiles, ships, aircraft, and generator sets.

[0003] The defects of the water eddy current dynamometer in the prior art are: 1. Patent document CN211602247U discloses a water vortex dynamometer, which cannot perform multiple stable limits on the mounting disc. The vibration of the disc during high-speed rotation can easily have an adverse effect on the test results, increase the energy loss caused by vibration or imbalance, and the stability and accuracy of the test are poor.

[0004] 2. Patent document CN214122768U discloses a hydraulic dynamometer for a water pump. The hydraulic dynamometer cannot conveniently replace different types of discs according to the specific requirements and test conditions of the dynamometer. The application scope is limited, and unreasonable use of the disc shortens the service life of the dynamometer.

[0005] 3. Patent document CN116124337A discloses a multi-stage series hydraulic dynamometer, which has a low water eddy current load and cannot meet the power requirements of different test scenarios from small to large. The overall measurement accuracy and reliability are poor.

[0006] 4. Patent document CN111189568A discloses a water vortex dynamometer, which can only serve as a directional load. The transmission of force and vibration reduces the stability of the dynamometer during operation. Summary of the invention

[0007] The purpose of the present invention is to provide a high-power and high-speed superimposed water eddy current load dynamometer to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a high-power and high-speed superimposed water eddy current load dynamometer, comprising a base, a dynamometer body and a rotating shaft, a support is installed on the top of the base, the dynamometer body is installed on the inner side of the support, the output end of the dynamometer body is installed with a rotating shaft, and a rotor sleeve is installed on the outer side of the rotating shaft; The outer end of the rotating shaft is provided with a disk body locking assembly, and the disk body locking assembly includes a driving locking shaft head, an external support diameter adjustment arc plate and a pull-back compression arc strip plate. The driving locking shaft head is installed on the outer end of the rotating shaft, the external support diameter adjustment arc plate is arranged on the outer side of the driving locking shaft head, and the pull-back compression arc strip plate is installed on the outer side of the external support diameter adjustment arc plate.

[0009] Preferably, a central inner groove is provided at the center position of the outer side of the rotating shaft, a pulling handle is installed on the inner side of the central inner groove, and the telescopic end of the pulling handle is connected to the outer end of the driving locking shaft head, an expansion groove is provided on the outer side of the driving locking shaft head, an external support diameter adjustment handle is installed on the inner side of the expansion groove, and the telescopic end of the external support diameter adjustment handle is connected to the inner side of the external support diameter adjustment arc plate.

[0010] Preferably, a perforated disk is installed at the outer end of the rotor sleeve, a center hole is opened through the center position of the outer end of the perforated disk, and the center hole cooperates with the outer support diameter adjustment arc plate, a perforation is opened through the outer end of the perforated disk, and a docking socket is opened through the outer end of the perforated disk.

[0011] Preferably, the outer side of the rotor sleeve is provided with a side sink groove, the inner side of the side sink groove is installed with a fixed plug strip, and the fixed plug strip cooperates with the docking socket, an operation space groove is provided at the top of the fixed plug strip, a compression limit spring is installed on the bottom wall of the operation space groove, a rebound limit frame is installed on the top of the compression limit spring, and the outer end of the rebound limit frame slides on the inner wall of the operation space groove, a rebound plug interface is provided on the outer side of the perforated disk, and the rebound plug interface is connected with the docking socket, and the rebound plug interface cooperates with the rebound limit frame.

[0012] Preferably, a drain valve is installed on the top of the base, an outer shell is installed on the outside of the dynamometer body, a water inlet valve is installed on the top of the outer shell, and the input end of the water inlet valve is connected to a servo water inlet main valve.

[0013] Preferably, an encoder is installed on the outer side of the support, and the encoder cooperates with the dynamometer body, a plurality of sets of rotor disks are installed on the inner side of the outer shell, and a plurality of sets of drainage ports are installed on the inner side of the dynamometer body.

[0014] Preferably, a sleeve column is installed on the top of the base, and a blade disk and a smooth disk are sleeved on the outer side of the sleeve column.

[0015] Preferably, a dynamometer controller is installed on the top of the base, and the dynamometer controller consists of a dynamometer drive module and a disc replacement module. The dynamometer drive module is electrically connected to the dynamometer body, the drain valve, the water inlet valve, the servo water inlet main valve and the encoder. The disc replacement module is electrically connected to the disc locking assembly, and the dynamometer drive module is electrically connected to the data processing unit.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a disc locking assembly at the outer end of the rotating shaft. After the rotor sleeve and the disc are installed, the disc locking assembly firmly limits the disc. Multiple firm limits effectively reduce the vibration of the disc during high-speed rotation, thereby avoiding the influence of vibration on the test result, ensuring that the disc remains balanced during rotation, preventing test errors caused by imbalance, and improving the stability and accuracy of the test. The disc locking assembly can firmly fix the disc to prevent it from loosening or falling off under long-term operation or high-load conditions, avoiding possible safety accidents. Stabilizing the disc can reduce energy loss caused by vibration or imbalance, so that the dynamometer can respond more quickly to output changes of the device under test during the test. The firm limit makes the water eddy current dynamometer applicable to more types of test scenarios and equipment, improving the versatility and applicability of the equipment.

[0017] 2. The present invention installs a perforated disk at the outer end of the rotor sleeve. When the water vortex dynamometer uses the disk as a load absorbing element, the perforated disk, blade disk or smooth disk can be selected according to the specific needs and test conditions of the dynamometer to increase the circumferential speed. The perforated disk can increase the permeability of the water flow and the vortex effect, thereby improving the energy conversion efficiency. The blade disk can control the vortex intensity to make the test process more stable and controllable. The smooth disk reduces the resistance of the water flow on the disk surface to reduce energy loss and improve the overall efficiency. Different types of disks can adapt to the test requirements and working conditions of different speeds and loads, and provide more accurate test results. The convenient replacement of the disk body makes the water vortex dynamometer have a wider range of applications. Reasonable use of the disk body can reduce the adverse effects of friction and heat on the equipment and extend the service life of the dynamometer.

[0018] 3. The present invention realizes high-speed and high-power water eddy current load through multiple sets of rotor disks and water inlet control systems, thereby meeting the load test requirements of high-speed and high-power prime movers. The principle of superimposing a single dynamometer is adopted, and multiple dynamometers can be used or used in combination, covering a wide range from low power to high power, and meeting the power requirements of different test scenarios from small to large. The dynamometers independently perform precise measurement and control to ensure the accuracy of the overall measurement. The superimposed use of multiple dynamometers can correct and verify each other, reducing the errors that may be caused by a single dynamometer and improving the reliability of the test results.

[0019] 4. The present invention installs a water inlet valve on the top of the outer shell. The traditional water vortex dynamometer is a single-rotor structure and can only serve as a directional load. The bidirectional load is a combination of two single rotors. For high-power hydraulic dynamometers, the volume and size of components can only be increased to meet the needs of high-power products. Compared with the traditional water vortex dynamometer, the superimposed water vortex dynamometer has the advantages of small size, high power and convenient control. Water is inletted from the top of the superimposed water vortex dynamometer, and the separate double-sided water inlet of the rotor disk enables the dynamometer to work in both forward and reverse rotations. The water chamber has a hole that communicates with the right air to prevent vacuum during operation. The drain pipe is connected to the dynamometer housing through a flexible joint to reduce the transmission of force and vibration. The separate drain port of the rotor disk improves the stability of the dynamometer operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the front internal structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the dynamometer body of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the drive locking shaft head of the present invention; Figure 5 This is a schematic diagram of the installation structure of the external support diameter-adjusting arc plate of the present invention; Figure 6 This is a schematic diagram of the internal structure of the rotor sleeve of the present invention from the front; Figure 7 It is a schematic diagram of the enlarged structure of point A of the present invention; Figure 8 It is a schematic diagram of the side structure of the perforated disk of the present invention; Fig. 9 It is a system diagram of the dynamometer controller of the present invention.

[0021] In the figure: 1. base; 2. drain valve; 3. support; 4. shaft; 5. water inlet valve; 6. servo water inlet main valve; 7. rotor disk; 8. encoder; 9. drain port; 10. dynamometer controller; 11. dynamometer body; 12. outer shell; 13. rotor sleeve; 14. perforated disk; 15. center hole; 16. perforation; 17. docking socket; 18. sleeve column; 19. blade disk; 20. smooth disk; 21. center inner groove; 22. pull handle; 23. drive locking shaft head; 24. expansion slot; 25. external support diameter adjustment handle; 26. external support diameter adjustment arc plate; 27. pull-back compression arc strip plate; 28. side sinking groove; 29. ​​fixed plug strip; 30. operation space groove; 31. compression limit spring; 32. rebound limit frame; 33. rebound plug interface. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection or a movable connection, or a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 , an embodiment provided by the present invention: a high-power and high-speed superimposed water eddy current load dynamometer; It includes a rotating shaft 4, a rotor sleeve 13 and a disc locking assembly. A support 3 is installed on the top of the base 1, a dynamometer body 11 is installed on the inner side of the support 3, a rotating shaft 4 is installed on the output end of the dynamometer body 11, a rotor sleeve 13 is installed on the outer side of the rotating shaft 4, and a disc locking assembly is arranged on the outer end of the rotating shaft 4. The disc locking assembly includes a driving locking shaft head 23, an outer support diameter adjustment arc plate 26 and a pull-back compression arc strip plate 27. The driving locking shaft head 23 is installed on the outer end of the rotating shaft 4, the outer support diameter adjustment arc plate 26 is arranged on the outer side of the driving locking shaft head 23, and the pull-back compression arc strip plate 27 is installed on the outer side of the outer support diameter adjustment arc plate 26; A central inner groove 21 is provided at the center position of the outer side of the rotating shaft 4, a pulling handle 22 is installed on the inner side of the central inner groove 21, and the telescopic end of the pulling handle 22 is connected to the outer end of the driving locking shaft head 23, an expansion slot 24 is provided on the outer side of the driving locking shaft head 23, an outer support diameter adjustment handle 25 is installed on the inner side of the expansion slot 24, and the telescopic end of the outer support diameter adjustment handle 25 is connected to the inner side of the outer support diameter adjustment arc plate 26; The support 3 ensures the stability of the dynamometer body 11 when it is working. The dynamometer body 11 can drive the rotating shaft 4. The central inner groove 21 provides an installation position for the pulling hand lever 22. When the disc body is installed on the outer end of the rotor sleeve 13, the pulling hand lever 22 drives the locking shaft head 23 to move outward, and the disc body is sleeved on the outer side of the outer support diameter adjustment arc plate 26 through the central hole 15. The expanded support slot 24 provides an installation position for the outer support diameter adjustment hand lever 25. The outer support diameter adjustment hand lever 25 drives the outer support diameter adjustment arc plate 26 to move outward to support and contact the inner wall of the central hole 15 to achieve preliminary limit of the disc body, change the diameter size of the two groups of outer support diameter adjustment arc plates 26, and pull the hand lever 22 to work and reset again to pull back and press the arc strip plate 27 to pull the disc body and the rotor sleeve 13 to fit closely to achieve double limit in the inner diameter direction and horizontal direction of the disc body. After the rotor sleeve 13 and the disc body are installed, the disc body locking assembly firmly limits the disc body. Multiple firm limits effectively reduce the vibration of the disc body during high-speed rotation, ensure that the disc body remains balanced during rotation, and prevent test errors caused by imbalance. The disc body locking assembly can firmly fix the disc body to prevent it from loosening or falling off under long-term operation or high-load conditions, thereby avoiding possible safety accidents. A stable disc body can reduce energy loss caused by vibration or imbalance, so that the dynamometer can respond more quickly to output changes of the device under test during the test. Stable limits can reduce the impact and wear on other components caused by loose discs, thereby extending the service life of the dynamometer. The disc body locking assembly is easy to disassemble and assemble quickly so that the disc body can be maintained, replaced or adjusted when necessary. When the position or angle of the disc body needs to be adjusted, the disc body locking assembly can provide stable support for the adjustment process, making the adjustment process more convenient and safe, and improving the overall performance and response speed of the equipment.

[0026] See also Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , a high-power and high-speed superimposed water eddy current load dynamometer; It includes a disc locking assembly, a fixed plug strip 29 and a rebound limit frame 32. The outer end of the rotating shaft 4 is provided with a disc locking assembly, the driving locking shaft head 23 is installed at the outer end of the rotating shaft 4, the outer support diameter adjustment arc plate 26 is arranged on the outer side of the driving locking shaft head 23, and the pull-back pressing arc strip plate 27 is installed on the outer side of the outer support diameter adjustment arc plate 26; The outer side of the rotor sleeve 13 is provided with a side sinking groove 28, the inner side of the side sinking groove 28 is installed with a fixed plug strip 29, and the fixed plug strip 29 cooperates with the docking socket 17, the top of the fixed plug strip 29 is provided with an operation space groove 30, the bottom wall of the operation space groove 30 is provided with a compression limit spring 31, the top of the compression limit spring 31 is provided with a rebound limit frame 32, and the outer end of the rebound limit frame 32 slides on the inner wall of the operation space groove 30, the outer side of the perforated disk 14 is provided with a rebound plug interface 33, and the rebound plug interface 33 is connected with the docking socket 17, and the rebound plug interface 33 cooperates with the rebound limit frame 32; The side sink groove 28 provides an installation position for the fixed plug-in strip 29. The pulling hand lever 22 works and resets again to make the pull-back compression arc strip plate 27 pull the disk body and the rotor sleeve 13 to fit tightly to achieve double limit in the inner diameter direction and horizontal direction of the disk body. Then, the rebound limit frame 32 is used to further limit the disk body. After the disk body is installed in place, the fixed plug-in strip 29 is plugged into the inner side of the docking hole 17. After the disk body is in place, the rebound limit frame 32 and the rebound plug interface 33 on the outer side of the perforated disk 14 are in the same vertical position. The compression limit spring 31 rebounds and unloads the force due to its own elastic force, causing the rebound limit frame 32 to slide outward on the inner side of the operating space groove 30. The rebound limit frame 32 is reset and docked with the rebound plug interface 33 to further stabilize the disk body. When replacing the disk body, the rebound limit frame 32 must be pressed first so that it is located inside the operating space groove 30, and then the disk body locking assembly is used for disassembly.

[0027] See also Figure 1 , Figure 2 , Figure 6 and Figure 8 , a high-power and high-speed superimposed water eddy current load dynamometer; It includes a perforated disk 14, a blade disk 19 and a smooth disk 20. The outer end of the rotor sleeve 13 is installed with the perforated disk 14. The center position of the outer end of the perforated disk 14 is penetrated with a center hole 15, and the center hole 15 is matched with the outer support diameter adjustment arc plate 26. The outer end of the perforated disk 14 is penetrated with a perforation 16, and the outer end of the perforated disk 14 is penetrated with a docking socket 17. The top of the base 1 is installed with a sleeve column 18, and the outer side of the sleeve column 18 is sleeved with the blade disk 19 and the smooth disk 20; The sleeve column 18 is used to store and place the unused disk body. The blade disk 19 and the smooth disk 20 are both provided with the same center hole 15 and docking jack 17 as the perforated disk 14. When the water vortex dynamometer uses the disk body as a load absorbing element, the perforated disk 14, the blade disk 19 or the smooth disk 20 can be selected according to the specific needs and test conditions of the dynamometer to increase the circumferential speed. When the disk is used as the load absorbing element, although the load absorbed by the unit diameter is small and the size is larger, a disk with a higher circumferential speed can be selected without cavitation. The working speed is more than 20% lower than the first-order critical speed, and the working stability is reliable. The perforated disk 14 can increase the passability and vortex effect of the water flow, so that the water flow generates a stronger vortex near the disk surface, thereby improving the energy conversion efficiency. The perforation 16 helps the circulation and heat dissipation of the water flow, reduces the influence of the heat generated by friction on the equipment, and improves the stability and durability of the equipment. The number, size and distribution of the perforations 16 The blade disk 19 can be adjusted as needed to adapt to different test requirements and power ranges. The blade disk 19 can guide the water flow in a specific direction, enhance fluid dynamics, and improve energy transfer efficiency. The shape and angle of the blades can accurately control the strength and direction of the vortex, making the test process more stable and controllable. The blade disk 19 can adapt to the test requirements of different speeds and loads, and provide more accurate test results. The smooth disk 20 reduces the complexity of processing and installation and reduces costs. The smooth surface reduces the resistance of water flow on the disk surface, reduces energy loss, and improves overall efficiency. In certain specific scenarios, such as when the low-speed stability or high-torque output of the test equipment needs to be tested, the smooth disk 20 is more suitable. Different types of discs can adapt to the test requirements and working conditions of different speeds and loads. The convenient replacement of the disc body makes the water vortex dynamometer have a wider range of applications. Reasonable use of the disc body can reduce the adverse effects of friction and heat on the equipment.

[0028] See also Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 and Figure 8 , a high-power and high-speed superimposed water eddy current load dynamometer; It includes a rotor sleeve 13, a perforated disc 14 and a rebound limit frame 32. The output end of the dynamometer body 11 is installed with a rotating shaft 4, the outer side of the rotating shaft 4 is installed with a rotor sleeve 13, the driving locking shaft head 23 is installed at the outer end of the rotating shaft 4, the outer end of the rotor sleeve 13 is installed with a perforated disc 14, the outer end center position of the perforated disc 14 is penetrated with a center hole 15, and the center hole 15 is matched with an outer support diameter adjustment arc plate 26, the outer end of the perforated disc 14 is penetrated with a perforation 16, the outer end of the perforated disc 14 is penetrated with a docking socket 17, the outer side of the rotor sleeve 13 is opened with a side sinking groove 28, the inner side of the side sinking groove 28 is installed with a fixed plug strip 29, and the fixed plug strip 29 is matched with the docking socket 17; A compression limit spring 31 is installed on the bottom wall of the operation space slot 30, and a rebound limit frame 32 is installed on the top of the compression limit spring 31, and the outer end of the rebound limit frame 32 slides on the inner wall of the operation space slot 30, and a rebound plug interface 33 is opened on the outer side of the perforated disk 14, and the rebound plug interface 33 is connected to the docking socket 17, and the rebound plug interface 33 cooperates with the rebound limit frame 32; When the disk body is installed at the outer end of the rotor sleeve 13, the hand lever 22 is pulled to drive the locking shaft head 23 to move outward, and the outer support diameter adjustment hand lever 25 drives the outer support diameter adjustment arc plate 26 to move outward to support and contact the inner wall of the center hole 15 to achieve the initial limit of the disk body, and the hand lever 22 is pulled to work and reset again to make the pull-back and clamping arc strip plate 27 pull the disk body and the rotor sleeve 13 to fit tightly. After the disk body is installed in place, the fixed plug strip 29 is plugged into the inner side of the docking socket 17. After the disk body is in place, the rebound limit frame 32 and the rebound plug interface 33 on the outer side of the perforated disk 14 are in the same vertical position, and the clamping limit spring 31 is pressed due to its own The elastic rebound unloading force causes the rebound limit frame 32 to slide outward on the inner side of the operating space slot 30, and the rebound limit frame 32 is reset and docked with the rebound plug interface 33 to further stabilize the disk body. After the disk body locking assembly stabilizes the disk body, it is reinforced by the rebound limit frame 32. Multiple stable limits effectively reduce the vibration generated by the disk body during high-speed rotation, ensuring that the disk body remains balanced during rotation, avoiding possible safety accidents. Stabilizing the disk body can reduce energy loss caused by vibration or imbalance, so that the dynamometer can respond more quickly to output changes of the device under test during the test.

[0029] See also Figure 1 , Figure 2 , Figure 3 and Fig. 9 , a high-power and high-speed superimposed water eddy current load dynamometer; It includes a dynamometer body 11, an outer shell 12 and a dynamometer controller 10, a drain valve 2 is installed on the top of the base 1, the outer shell 12 is installed on the outside of the dynamometer body 11, a water inlet valve 5 is installed on the top of the outer shell 12, the input end of the water inlet valve 5 is connected to the servo water inlet main valve 6, an encoder 8 is installed on the outside of the support 3, and the encoder 8 cooperates with the dynamometer body 11, multiple groups of rotor disks 7 are installed on the inside of the outer shell 12, and multiple groups of drain ports 9 are installed on the inside of the dynamometer body 11; A dynamometer controller 10 is installed on the top of the base 1. The dynamometer controller 10 is composed of a dynamometer drive module and a disc replacement module. The dynamometer drive module is electrically connected to the dynamometer body 11, the drain valve 2, the water inlet valve 5, the servo water inlet main valve 6 and the encoder 8. The disc replacement module is electrically connected to the disc locking assembly. The dynamometer drive module is electrically connected to the data processing unit. The input and output ends of multiple water vortex dynamometers are connected in parallel, so that they can simultaneously receive the output power of the power equipment and jointly undertake the measurement task. The measurement results of each dynamometer are superimposed by the data processing unit to obtain the total power value. The top of the superimposed water vortex dynamometer is filled with water through the servo water inlet main valve 6 and the water inlet valve 5. The separate double-sided water inlet of the rotor disk 7 enables the dynamometer to work in both forward and reverse rotations. The water chamber has a hole connected to the right air to prevent vacuum during operation. The drain valve 2 is connected to the dynamometer housing through a soft joint to reduce the transmission of force and vibration. The separate drain port 9 of the rotor disk 7 improves the stability of the dynamometer operation. The dynamometer controller 10 integrates and drives the dynamometer body 11, the drain valve 2, the water inlet valve 5, the servo water inlet main valve 6, the encoder 8 and the disc locking assembly through the dynamometer drive module and the disc replacement module, so as to realize accurate output power detection of the dynamometer device according to the specific requirements and test conditions of the dynamometer device. The dynamometer drive module is electrically connected to the data processing unit. The power output by the power device will drive the water to flow and generate eddy currents. The eddy currents will be subject to hydraulic resistance during the flow process. The resistance sensor measures it, and the speed sensor measures the flow rate of the water. The data processing unit can calculate the power output of the power device through these two parameters. The dynamometer is tested under 80 atmospheres of water pressure. The cooling water flow is proportional to the power absorbed by the dynamometer. The drainage temperature is generally controlled not to exceed 74°C. Too high a drainage temperature will accelerate scaling and corrosion, and when more heat is transferred to the bearing, it will cause vibration of the dynamometer. The maximum drainage temperature cannot exceed 82°C. The combination of dynamometers can be flexibly adjusted between multiple test items to improve the utilization rate and economic benefits of the equipment. The superimposed water vortex dynamometer adopts a modular design. Each dynamometer is relatively independent, which is convenient for maintenance and replacement. As the test requirements change, dynamometers can be easily added or replaced to adapt to new test requirements.

[0030] Working principle: When using this device, first select a suitable disc according to the peripheral speed of the dynamometer. When the disc is installed on the outer end of the rotor sleeve 13, pull the hand lever 22 to drive the locking shaft head 23 to move outward, and the disc is sleeved on the outer side of the outer support diameter adjustment arc plate 26 through the center hole 15. The outer support diameter adjustment hand lever 25 drives the outer support diameter adjustment arc plate 26 to move outward to support and contact the inner wall of the center hole 15. After pressing the rebound limit frame 32, the hand lever 22 is pulled back to reset so that the pull-back compression arc strip plate 27 pulls the disc body and the rotor sleeve 13 to fit tightly, and the fixed plug strip 29 is plugged into the inner side of the docking socket 17. After the disc body is in place, the rebound limit frame 32 is reset and docked with the rebound plug interface 33 to further stabilize the disc body; After the power equipment is connected to the dynamometer body 11 , the dynamometer measures the hydraulic resistance of the eddy current to infer the power output of the power equipment.

[0031] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A high-power, high-speed superimposed water eddy current load dynamometer, comprising a base (1), a dynamometer body (11) and a rotating shaft (4), characterized in that: A support (3) is installed on the top of the base (1), a dynamometer body (11) is installed on the inner side of the support (3), a rotating shaft (4) is installed on the output end of the dynamometer body (11), and a rotor sleeve (13) is installed on the outer side of the rotating shaft (4); The outer end of the rotating shaft (4) is provided with a disc body locking assembly, and the disc body locking assembly comprises a driving locking shaft head (23), an outer support diameter adjustment arc plate (26) and a pull-back pressing arc strip plate (27), wherein the driving locking shaft head (23) is mounted on the outer end of the rotating shaft (4), the outer support diameter adjustment arc plate (26) is arranged on the outer side of the driving locking shaft head (23), and the pull-back pressing arc strip plate (27) is mounted on the outer side of the outer support diameter adjustment arc plate (26).

2. A high-power, high-speed superimposed water eddy current load dynamometer according to claim 1, characterized in that: A central inner groove (21) is provided at the center position of the outer side of the rotating shaft (4), a pulling handle (22) is installed on the inner side of the central inner groove (21), and the telescopic end of the pulling handle (22) is connected to the outer end of the driving locking shaft head (23), an expansion slot (24) is provided on the outer side of the driving locking shaft head (23), an outer support diameter adjustment handle (25) is installed on the inner side of the expansion slot (24), and the telescopic end of the outer support diameter adjustment handle (25) is connected to the inner side of the outer support diameter adjustment arc plate (26).

3. A high-power, high-speed superimposed water eddy current load dynamometer according to claim 1, characterized in that: A perforated disk (14) is installed at the outer end of the rotor sleeve (13); a center hole (15) is provided through the center position of the outer end of the perforated disk (14); the center hole (15) cooperates with the outer support diameter adjustment arc plate (26); a perforated hole (16) is provided through the outer end of the perforated disk (14); and a docking socket (17) is provided through the outer end of the perforated disk (14).

4. A high-power, high-speed superimposed water eddy current load dynamometer according to claim 3, characterized in that: The outer side of the rotor sleeve (13) is provided with a side sink groove (28), the inner side of the side sink groove (28) is installed with a fixed plug strip (29), and the fixed plug strip (29) cooperates with the docking socket (17), the top of the fixed plug strip (29) is provided with an operation space groove (30), the bottom wall of the operation space groove (30) is installed with a clamping limit spring (31), the top of the clamping limit spring (31) is installed with a rebound limit frame (32), and the outer end of the rebound limit frame (32) slides on the inner wall of the operation space groove (30), the outer side of the perforated disk (14) is provided with a rebound plug interface (33), and the rebound plug interface (33) is connected to the docking socket (17), and the rebound plug interface (33) cooperates with the rebound limit frame (32).

5. The high-power, high-speed superimposed water eddy current load dynamometer according to claim 1, characterized in that: A drain valve (2) is installed on the top of the base (1), an outer shell (12) is installed on the outside of the dynamometer body (11), a water inlet valve (5) is installed on the top of the outer shell (12), and the input end of the water inlet valve (5) is connected to a servo water inlet main valve (6).

6. A high-power, high-speed superimposed water eddy current load dynamometer according to claim 5, characterized in that: An encoder (8) is installed on the outside of the support (3), and the encoder (8) cooperates with the dynamometer body (11), a plurality of sets of rotor disks (7) are installed on the inside of the outer shell (12), and a plurality of sets of drainage ports (9) are installed on the inside of the dynamometer body (11).

7. The high-power, high-speed superimposed water eddy current load dynamometer according to claim 1, characterized in that: A sleeve column (18) is installed on the top of the base (1), and a blade disk (19) and a smooth disk (20) are sleeved on the outer side of the sleeve column (18).

8. The high-power, high-speed superimposed water eddy current load dynamometer according to claim 1, characterized in that: A dynamometer controller (10) is installed on the top of the base (1). The dynamometer controller (10) is composed of a dynamometer drive module and a disc replacement module. The dynamometer drive module is electrically connected to the dynamometer body (11), the drain valve (2), the water inlet valve (5), the servo water inlet main valve (6) and the encoder (8). The disc replacement module is electrically connected to the disc locking assembly. The dynamometer drive module is electrically connected to a data processing unit.

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