Nuclear power plant electric actuating mechanism torque test bench and nuclear power plant electric actuating mechanism torque test device
By designing a torque testing bench for electric actuators in nuclear power plants, using a central drive shaft and torque sensor to measure output torque, and utilizing a pneumatic brake to provide load, the problem of precise control in torque testing of electric actuators in nuclear power plants was solved, achieving high-precision and reliable measurement results.
Patent Information
- Application Number
- CN202520159170.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-22
AI Technical Summary
In existing technologies, torque testing equipment for electric actuators in nuclear power plants cannot accurately control the start and stop of torque switches, which may cause valves to be damaged due to excessive torque.
Design a torque test bench for electric actuators in nuclear power plants, comprising a frame, mounting mechanism, central drive shaft, torque sensor and pneumatic brake. The output torque is measured by the central drive shaft and torque sensor, and the pneumatic brake is used to provide a simulated load to eliminate the impact torque at the moment of startup.
It enables high-precision measurement of the output torque of electric actuators in nuclear power plants, eliminates the damage to equipment caused by the impact torque at startup, and improves the reliability and repeatability of the measurement.
Smart Images
Figure CN223664140U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to nuclear power technology field especially relates to a nuclear power plant electric actuator torque test board and nuclear power plant electric actuator torque testing arrangement. BACKGROUND
[0002] Nuclear power plant electric actuator is often used for the electric switch operation of valve, and the operation process needs to utilize the inside torque switch to control the start and stop of electric actuator to protect the valve from being damaged due to the over torque of electric actuator. In order to realize the accurate control of torque switch to the start and stop of electric actuator, the action torque value of torque switch needs to be tested. UTILITY MODEL CONTENTS
[0003] The utility model solves the technical problem in providing a nuclear power plant electric actuator torque test board and nuclear power plant electric actuator torque testing arrangement.
[0004] The utility model adopts the technical scheme in the technical problems thereof: a nuclear power plant electric actuator torque test board is constructed, including rack, mounting mechanism, center drive shaft, torque sensor, drive shaft and pneumatic brake;
[0005] The mounting mechanism is arranged on the rack and is used for mounting the nuclear power plant electric actuator, the center drive shaft is arranged on the rack and is located in the inner chamber of the mounting mechanism, and the upper end of the center drive shaft is used for connecting the output main shaft of the nuclear power plant electric actuator, the torque sensor is further arranged in the rack, the input shaft of the torque sensor is connected with the lower end of the center drive shaft, the output shaft of the torque sensor is connected with the upper end of the drive shaft, the pneumatic brake is installed in the rack, and the brake disc of the pneumatic brake is connected with the lower end of the drive shaft.
[0006] In some embodiments, the rack is further provided with a display screen connected with the torque sensor.
[0007] In some embodiments, the mounting mechanism includes a mounting flange.
[0008] In some embodiments, the output shaft of the torque sensor is connected with the upper end of the drive shaft through a shaft sleeve.
[0009] In some embodiments, the upper surface of the rack is provided with an antistatic rubber plate.
[0010] In some embodiments, the bottom of the rack is provided with a movable wheel.
[0011] In some embodiments, the rack is a square columnar structure.
[0012] The utility model also provides a nuclear power plant electric actuator torque testing device, including any embodiment's nuclear power plant electric actuator torque testing platform, still include operating cabinet, the operating cabinet includes the cabinet body, the cabinet body is equipped with industrial computer, the industrial computer is connected with torque sensor and pneumatic brake connection arrangement.
[0013] In some embodiments, the cabinet body is provided with a display connected with the industrial computer.
[0014] In some embodiments, the operating cabinet is provided with a moving assembly.
[0015] The utility model has the following beneficial effects: the nuclear power plant electric actuator torque testing platform can be used for the torque test of nuclear power plant electric actuator, the torque sensor of nuclear power plant electric actuator torque testing platform can actually measure the output torque of the output main shaft of nuclear power plant electric actuator, and the measurement accuracy is high, the measurement repeatability is good, and the measurement result is reliable. The pneumatic brake is used to provide valve simulation load, the no-load starting torque is small (close to 0 torque value), and the damage problem of nuclear power plant electric actuator caused by the impact torque generated in the starting moment of nuclear power plant electric actuator is eliminated. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the utility model, the utility model will be further described below in combination with the drawings and embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor. In the drawings:
[0017] Figure 1 It is one of the structure schematic diagrams of the nuclear power plant electric actuator torque testing platform in some embodiments of the utility model;
[0018] Figure 2 It is the second structure schematic diagram of the nuclear power plant electric actuator torque testing platform in some embodiments of the utility model;
[0019] Figure 3 It is the application schematic diagram of the nuclear power plant electric actuator torque testing platform in some embodiments of the utility model;
[0020] Figure 4 It is one of the structure schematic diagrams of the nuclear power plant electric actuator torque testing device in some embodiments of the utility model;
[0021] Figure 5 It is the second structure schematic diagram of the nuclear power plant electric actuator torque testing device in some embodiments of the utility model;
[0022] Figure 6 This is one of the structural schematic diagrams of the control cabinet in some embodiments of this utility model;
[0023] Figure 7 This is the second schematic diagram of the structure of the control cabinet in some embodiments of this utility model;
[0024] Figure 8 This is the third schematic diagram of the structure of the control cabinet in some embodiments of this utility model. Detailed Implementation
[0025] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.
[0026] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0027] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0028] See Figures 1 to 3 This utility model discloses a torque testing bench 10 for electric actuators in nuclear power plants, which can be used for torque testing of electric actuators 100 in nuclear power plants. In some embodiments, the torque testing bench 10 for electric actuators in nuclear power plants can also be defined as a torque table; however, this is not specifically limited here.
[0029] The nuclear power plant electric actuator torque test bench 10 includes a frame 11, a mounting mechanism 12, a central drive shaft 13, a torque sensor 14, a drive shaft 15, and a pneumatic brake 16. The torque sensor 14 is used to measure the output torque and speed of the nuclear power plant electric actuator 100, and the pneumatic brake 16 is used to provide a simulated load on the valve. The nuclear power plant electric actuator 100 can also be defined as a nuclear power plant electric head.
[0030] The mounting mechanism 12 is mounted on the frame 11 and is used for mounting the electric actuator of the nuclear power plant. The central drive shaft 13 is mounted on the frame 11 and located inside the mounting mechanism 12. The upper end of the central drive shaft 13 is used to connect to the output main shaft 101 of the electric actuator 100 of the nuclear power plant. The two can be fixed by plugging or connected by a key. The frame 11 also contains a torque sensor 14. The input shaft 141 of the torque sensor 14 is connected to the lower end of the central drive shaft 13, and the output shaft 142 of the torque sensor 14 is connected to the upper end of the drive shaft 15. The pneumatic brake 16 is mounted inside the frame 11, and the brake disc 161 of the pneumatic brake 16 is connected to the lower end of the drive shaft 15. The central drive shaft 13, the input shaft 141 of the torque sensor 14, the output shaft 142 of the torque sensor 14, and the drive shaft 15 are coaxially arranged. After the output spindle 101 of the electric actuator 100 of the nuclear power plant is connected to the central drive shaft 13, the output spindle 101 of the electric actuator 100 of the nuclear power plant, the central drive shaft 13, the input shaft 141 of the torque sensor 14, the output shaft 142 of the torque sensor 14, and the drive shaft 15 are coaxially arranged, thus effectively ensuring the smooth and quiet operation of the torque test bench 10 of the electric actuator of the nuclear power plant.
[0031] In some embodiments, the platform 11 is a square column structure. The platform 11 may include a square column frame, a top plate and a bottom plate installed on the upper and lower sides of the frame, and side plates that can be detachably installed on the four sides of the frame.
[0032] In some embodiments, the stand 11 is also provided with a display screen 17 connected to the torque sensor 14, which can be used to display the information collected by the torque sensor 14.
[0033] In some embodiments, the mounting mechanism 12 includes a mounting flange, which may be a stacked mounting flange such as a pagoda-shaped mounting flange, or the mounting flange may be an integral mounting flange.
[0034] In some embodiments, the output shaft 142 of the torque sensor 14 is connected to the upper end of the drive shaft 15 via a bushing 18.
[0035] In some embodiments, the upper surface of the stand 11 is provided with an anti-static rubber plate. It can be used to temporarily place hardware tools such as hex wrenches and multimeters. At the same time, since there are no protruding structural parts on the upper surface of the stand 11, the use of tools such as hex wrenches is not hindered when the electric actuator 100 of the nuclear power plant is disassembled and assembled.
[0036] In some embodiments, the bottom of the stand 11 is provided with casters 19. There may be multiple casters 19, which may include, but are not limited to, casters with brakes, to facilitate movement and transport.
[0037] In some embodiments, the torque sensor 14 can actually measure the output torque of the output spindle 101 of the nuclear power plant electric actuator 100. The torque is measured directly without intermediate losses or calculation conversions, resulting in high measurement accuracy, good repeatability, and reliable measurement results. A pneumatic brake 16 is used to provide a simulated load for the valve, resulting in a small no-load starting torque (close to zero), thus eliminating the damage to the nuclear power plant electric actuator 100 caused by the impact torque generated at the moment of startup.
[0038] like Figures 4 to 8 As shown, this utility model also discloses a torque testing device for electric actuators in nuclear power plants, including a torque testing bench 10 for electric actuators in nuclear power plants. There can be multiple torque testing benches 10 for electric actuators in nuclear power plants, and the torque ranges of the multiple torque testing benches 10 are different, which can be applicable to electric actuators 100 of different specifications in nuclear power plants.
[0039] The electric actuator torque testing device for nuclear power plants also includes an operating cabinet 20, which includes a cabinet body 21. The cabinet body 21 houses an industrial control computer 22, which is connected to the torque sensor 14 and the pneumatic brake 16. The device may also include an air compressor 30, which can be directly connected to the pneumatic brake 16 of the electric actuator torque testing bench 10, or the air compressor 30 can be first connected to the operating cabinet 20, and then connected to the pneumatic brake 16 of the electric actuator torque testing bench 10 via the operating cabinet 20. In some embodiments, the operating cabinet 20 may also be defined as a control cabinet for an electric actuator torque switch calibration device; no specific limitation is made here. The industrial control computer 22 may be, but is not limited to, a PLC industrial control computer.
[0040] In some embodiments, the cabinet 21 is provided with a display 23 connected to the industrial computer 22. The display 23 may be, but is not limited to, a touch screen, for operation purposes.
[0041] In some embodiments, the cabinet 21 is provided with a keyboard 24 connected to the industrial computer 22.
[0042] In some embodiments, the side of the cabinet 21 is also provided with several terminal blocks 25 connected to the industrial control computer 22. The terminal blocks 25 may include a control power supply terminal, an AC power supply terminal, a control terminal for a nuclear power plant electric actuator torque test bench, a control switch terminal for a nuclear power plant electric actuator, and a power supply terminal for a nuclear power plant electric actuator, etc. The control terminal for the nuclear power plant electric actuator torque test bench can be connected to the torque sensor 14 via a control cable 40, the control switch terminal for the nuclear power plant electric actuator can be connected to the nuclear power plant electric actuator 100 via a control line, and the power supply terminal for the nuclear power plant electric actuator can be connected to the nuclear power plant electric actuator 100 via a power cord 50. No specific limitations are made here.
[0043] In some embodiments, the cabinet 21 may also be equipped with an air source control device 26. The air source control device 26 may include a pressure regulating line and a pressure regulating valve and flow meter installed on the pressure regulating line. The pressure regulating valve and flow meter can be connected to the industrial control computer 22. The inlet end of the pressure regulating line can be connected to the air compressor 30 via an air inlet line 60, and the outlet end of the pressure regulating line can be connected to the pneumatic brake 16 via an air delivery line 70. The inlet and outlet ends of the pressure regulating line can be located on the side of the cabinet 21. Alternatively, the air compressor 30 can be directly connected to the pneumatic brake 16 to provide compressed air to the pneumatic brake 16. The air compressor 30 includes, but is not limited to, a silent air compressor.
[0044] In some embodiments, the control cabinet 20 is provided with a moving component. The moving component may include a plurality of casters, including but not limited to casters with brakes, to facilitate movement and transport.
[0045] In some embodiments, the control cabinet 20 may also be a control cabinet using existing technology, and no specific limitation is made here.
[0046] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.
Claims
1. A torque test bench for electric actuators of nuclear power plants, characterized in that, The torque testing table comprises a rack (11), a mounting mechanism (12), a central driving shaft (13), a torque sensor (14), a driving shaft (15) and a pneumatic brake (16). The mounting mechanism (12) is arranged on the rack (11) and used for mounting the electric actuator of the nuclear power plant; the central driving shaft (13) is arranged on the rack (11) and located in the inner cavity of the mounting mechanism (12), and the upper end of the central driving shaft (13) is used for connecting the output main shaft of the electric actuator of the nuclear power plant; the torque sensor (14) is further arranged in the rack (11), the input shaft (141) of the torque sensor (14) is connected with the lower end of the central driving shaft (13), the output shaft (142) of the torque sensor (14) is connected with the upper end of the driving shaft (15), and the pneumatic brake (16) is arranged in the rack (11), and the brake disc (161) of the pneumatic brake (16) is connected with the lower end of the driving shaft (15).
2. The nuclear power plant electric actuator torque test bench of claim 1, wherein, A display screen (17) connected with the torque sensor (14) is further arranged on the rack (11).
3. The nuclear power plant electric actuator torque test bench of claim 1, wherein, The mounting mechanism (12) comprises a mounting flange.
4. The nuclear power plant electric actuator torque test bench of claim 1, wherein, The output shaft (142) of the torque sensor (14) is connected with the upper end of the driving shaft (15) through a shaft sleeve (18).
5. The nuclear power plant electric actuator torque test bench of claim 1, wherein, An anti-static rubber plate is arranged on the upper surface of the rack (11).
6. The nuclear power plant electric actuator torque test bench of claim 1, wherein, Mobile wheels (19) are arranged on the bottom of the rack (11).
7. The nuclear power plant electric actuator torque test bench of claim 1, wherein, The rack (11) has a square columnar structure.
8. A nuclear power plant electric actuator torque testing device, characterized by, The torque testing table of the electric actuator of the nuclear power plant according to any one of claims 1 to 7 further comprises an operation cabinet (20), and the operation cabinet (20) comprises a cabinet body (21) provided with an industrial computer (22) connected with the torque sensor (14) and the pneumatic brake (16).
9. The nuclear power plant electric actuator torque testing device of claim 8, wherein, The cabinet body (21) is provided with a display (23) connected with the industrial computer (22).
10. The nuclear power plant electric actuator torque testing device of claim 8, wherein, The operation cabinet (20) is provided with a moving assembly.