Marine valve electric adjusting actuator

Abstract

The utility model relates to the technical field of electric actuators, and discloses a marine valve electric adjusting actuator which comprises a driving motor, an elastic rotation reset mechanism, a micro generator and a brake, the micro generator is installed in an actuator shell, and the micro generator senses the opening degree change of a valve through a mechanical device connected with the valve. The opening change of the valve is converted into mechanical energy, the mechanical energy is converted into electric energy through the micro generator, and the electric energy is stored in a power supply system of the actuator and is provided for the actuator; the transmission mechanism is provided with a manual valve release mechanism allowing a straight tooth output shaft to be manually rotated, manual operation is conducted when electric power fails, and driving of a driving motor is not needed. In addition, a manual operation mode and an electric operation mode can be adopted, which means that the device not only can be driven in an electric mode, but also can be operated in a manual mode, and the operation flexibility is improved when no power supply exists.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric actuators, and particularly relates to a marine valve electric regulating actuator. Background Technique

[0002] Traditional electric actuators include a driving motor. The driving motor drives a vertical output shaft through a transmission mechanism. When installed on a valve, the output shaft drives the valve to open and close. Therefore, both the opening and closing of the valve are electrically driven. However, in the actual operating environment, power outages may occur. At this time, it is impossible to directly control the electric actuator to drive the valve to close. If the valve must be closed in the case of a power outage, it cannot be achieved in time.

[0003] Therefore, in the prior art, to solve the above problems, a power-off reset type electric actuator with the publication number of "CN213064812U" includes a driving motor. The driving motor drives a straight-tooth output shaft through a transmission mechanism. The straight-tooth output shaft passes through the housing and is provided with a driving interface at the lower end. A rack is arranged in the housing. The rack meshes with the straight-tooth output shaft teeth on the straight-tooth output shaft. The rack is fixed on a guide seat. A reset spring is arranged between the rear side of the guide seat and the side wall of the housing. When the driving motor drives the straight-tooth output shaft to rotate in place, the straight-tooth output shaft of the driving motor pushes the rack to move outwards through the straight-tooth output shaft teeth to compress the reset spring. A clutch is arranged on the transmission path from the driving motor to the straight-tooth output shaft.

[0004] For the above power-off reset type electric actuator, although it can reversely drive the straight-tooth output shaft to the initial position in a mechanical driving manner in the power-off state, and then drive the valve connected to the driving interface to return to the initial position, which can more effectively ensure the reset in the power-off state and effectively avoid the occurrence of faults, there are still the following obvious defects in its use: In the power-off reset type actuator, when the power supply is lost, the reset of the actuator is achieved by the spring releasing energy. This requires the reset spring to have enough energy to drive the reset action of the actuator, and it is more dependent on spring energy storage. The design of the power-off reset type actuator may focus more on automation and electric control operations, and is suitable for occasions that require precise control and a high degree of automation, and is not suitable for environments with unstable power supply, such as ship systems. Summary of the Utility Model

[0005] The present invention aims to solve the technical problem that the traditional electric actuator in the above prior art is suitable for occasions that require precise control and a high degree of automation, and is not suitable for environments with unstable power supply.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A marine valve electric regulating actuator, comprising a driving motor, an elastic rotational reset mechanism, a micro generator and a brake,

[0008] The driving motor is installed inside the actuator housing. The driving motor drives a straight-tooth output shaft through a transmission mechanism, and the rotational movement of the straight-tooth output shaft directly controls the opening or closing of the valve;

[0009] The elastic rotational reset mechanism is arranged in a supporting manner with the straight-tooth output shaft. The elastic rotational reset mechanism includes a housing through which the straight-tooth output shaft passes, a rack arranged inside the housing and meshing with the shaft teeth on the straight-tooth output shaft, a guide seat for fixing the rack, and a reset spring located between the rear side of the guide seat and the housing. When the driving motor is powered on and starts to rotate, it drives the straight-tooth output shaft to rotate through the transmission mechanism, thereby controlling the opening or closing of the valve;

[0010] The micro generator is installed inside the actuator housing. The micro generator senses the change in the valve opening through a mechanical device connected to the valve. The change in the valve opening is converted into mechanical energy, and the mechanical energy is converted into electrical energy through the micro generator and stored in the power supply system of the actuator to provide electrical energy for the actuator;

[0011] The brake is located on the driving motor. After the straight-tooth output shaft is driven to the in-place position, the brake switch is triggered, and the brake switch starts the brake. The brake engages to stop the output shaft of the driving motor.

[0012] Preferably, a manual release mechanism for allowing manual rotation of the straight-tooth output shaft to drive the valve is provided on the transmission mechanism, which can be manually operated in case of power failure without the need for the drive of the driving motor. It can have two operation modes: manual and electric, which means it can not only be driven electrically but also be operated manually, improving the operation flexibility in the absence of power supply.

[0013] Preferably, the actuator housing is connected to the housing through a bracket.

[0014] Preferably, a limit switch for detecting the extreme position of the movement of the guide seat to prevent overshoot is installed inside the housing.

[0015] Preferably, guide seats are respectively connected to both ends of the rack, and the guide seats are slid left and right in cooperation with the guide grooves on the inner walls of the upper and lower ends of the housing. The sliding of the guide seat along the guide groove can ensure the accuracy and stability of the movement of the rack.

[0016] Preferably, a guide rail for limiting and guiding the sliding of the rack in cooperation is provided inside the housing. The guide rail provides an accurate guiding path for the rack, which helps to maintain the linear movement of the rack and improve the working accuracy of the actuator.

[0017] Preferably, at least two spring end grooves are provided on the outer side of the guide seat, and corresponding housing end grooves are provided on the side wall of the housing. The return springs are respectively arranged between the spring end grooves and the housing end grooves. The arrangement of the return springs helps to provide a more stable restoring force for the actuator, ensuring that the actuator can accurately return to the initial position.

[0018] Compared with the prior art, the technical effects and advantages of the present utility model are as follows:

[0019] The marine valve electric regulating actuator combines manual and electric operation modes, and is equipped with a micro-generator, which can achieve automatic reset in case of power failure to ensure the safe operation of the ship system. When the ship system is operating normally, the driving motor is powered on and starts to rotate, driving the straight-tooth output shaft to rotate through the transmission mechanism, thereby controlling the opening and closing of the valve. At the same time, the micro-generator starts, converts the valve opening change into electrical energy, and provides continuous power supply for the actuator. When a power failure occurs, the brake is released, and the elastic rotation reset mechanism drives the straight-tooth output shaft in the reverse direction to restore it to the initial state. When the power is restored, the actuator resumes normal operation, and the driving motor drives the straight-tooth output shaft through the transmission mechanism to control the opening and closing of the valve. The manual release mechanism allows manual rotation of the straight-tooth output shaft to drive the valve, enabling manual operation in case of power failure without the need for the driving of the driving motor.

[0020] The marine valve electric regulating actuator can improve the reliability of the actuator, can manually operate the valve without power supply, and the built-in micro-generator ensures automatic reset even in case of power failure, reducing the operation risk of the ship system. The elastic rotation reset mechanism provides a stable restoring force, ensuring that the actuator accurately returns to the initial position, improving the anti-impact performance and stability of the actuator. The brake and clutch prevent mechanical shock caused by the rotational inertia of the driving motor, extending the service life of the actuator.

[0021] The designs of the guide seat and the rack ensure the accuracy and stability of the rack movement, reduce friction, extend the service life of the components, facilitate debugging and adjustment. The guide rail provides an accurate guiding path, reduces the friction between the rack and the inner wall of the housing, and is convenient for installation and maintenance. The design of the return spring provides a stable restoring force, reduces fatigue damage, allows adjustment of the spring, and optimizes the performance of the actuator. The limit switch prevents overshoot of the guide seat, improving the reliability and control accuracy of the actuator. Brief Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the present utility model;

[0023] Figure 2 is a sectional view of the present utility model;

[0024] Figure 3 is a sectional view of the housing of the present utility model.

[0025] In the figure: 1. Driving motor; 2. Actuator housing; 3. Valve; 4. Bracket; 5. Guide rail; 6. Guide groove; 7. Manual valve release mechanism; 8. Limit switch; 9. Return spring; 10. Rack; 11. Straight-tooth output shaft; 12. Micro generator; 13. Brake; 14. Housing; 15. Guide seat; 16. Spring end groove; 17. Housing end groove. Specific embodiments

[0026] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] The following is a further detailed description of the present application Figures 1-3 in conjunction with the attached drawings.

[0028] An electric regulating actuator for a marine valve disclosed in an embodiment of the present application includes a driving motor 1, an elastic rotational reset mechanism, a micro generator 12, and a brake 13.

[0029] The driving motor 1 is installed in the actuator housing 2. The driving motor 1 drives the straight-tooth output shaft 11 through a transmission mechanism, and the rotational movement of the straight-tooth output shaft 11 directly controls the opening or closing of the valve 3.

[0030] The elastic rotational reset mechanism is arranged in a matching manner with the straight-tooth output shaft 11. The elastic rotational reset mechanism includes a housing 14 through which the straight-tooth output shaft 11 passes, a rack 10 arranged in the housing 14 and meshing with the shaft teeth on the straight-tooth output shaft 11, a guide seat 15 for fixing the rack 10, and a return spring 9 located between the rear side of the guide seat 15 and the housing 14. When the driving motor 1 is powered on and starts to rotate, it drives the straight-tooth output shaft 11 to rotate through the transmission mechanism, thereby controlling the opening or closing of the valve 3. The actuator housing 2 is connected to the housing 14 through a bracket 4. The bracket 4 can provide additional support for the actuator housing 2 to ensure that the housing will not be easily deformed or displaced when subjected to external forces. The bracket 4 can be conveniently installed on the housing, providing convenience for the overall installation of the actuator, and also facilitating the maintenance and replacement of the housing.

[0031] The micro generator 12 is installed in the actuator housing 2. The micro generator 12 senses the change in the opening of the valve 3 through a mechanical device connected to the valve 3. The change in the opening of the valve 3 is converted into mechanical energy, and the mechanical energy is converted into electrical energy through the micro generator 12 and stored in the power supply system of the actuator to provide electrical energy for the actuator.

[0032] The brake 13 is located on the drive motor 1. After the straight-tooth output shaft 11 is driven to the in-place position, the brake switch is triggered, and the brake switch starts the brake 13. The brake 13 engages to stop the rotation of the output shaft of the drive motor 1.

[0033] A manual rotation mechanism is provided on the transmission mechanism to allow manual rotation of the straight-tooth output shaft 11 to drive the valve 3 manual release mechanism 17 for manual operation in the event of power failure without the need for the drive of the drive motor 1. There are two operation modes: manual and electric, which means it can be driven not only electrically but also manually, improving the operation flexibility in the absence of power supply.

[0034] When the ship system is operating normally, the drive motor 1 drives the straight-tooth output shaft 11 through the transmission mechanism to open and close the valve 3. At the same time, the micro-generator 12 starts to convert the opening degree of the valve 3 into electrical energy to provide continuous power supply for the actuator.

[0035] When a power failure occurs, the elastic rotation reset mechanism of the actuator comes into play. The drive motor 1 stops working, the brake 13 releases, and the elastic rotation reset mechanism drives the straight-tooth output shaft 11 in the reverse direction to restore it to the initial state. At this time, the clutch disengages to disconnect the force transmission between the drive motor 1 and the straight-tooth output shaft 11, ensuring that the actuator can automatically reset in the power-off state.

[0036] When power is restored, the actuator resumes normal operation. The brake 13 engages, and the drive motor 1 drives the straight-tooth output shaft 11 through the transmission mechanism to open and close the valve 3. The micro-generator 12 continues to work to provide power for the actuator.

[0037] It can achieve integrated manual and electric operation, improve the reliability of the actuator, be equipped with a built-in micro-generator 12 to ensure that the actuator can still automatically reset in the event of a power failure, reduce the operation risk of the ship system, adopt an elastic rotation reset mechanism to make the actuator have better shock resistance and stability, and the application of the brake 13 and the clutch can effectively prevent mechanical shock caused by the rotational inertia of the drive motor 1 in the power-off state of the actuator, extend the service life of the actuator, be applicable to the electric regulation of various valves 3 on the ship, and improve the automation level of the ship system.

[0038] A limit switch 8 for detecting the extreme position of the movement of the guide seat 15 to prevent overshoot is installed inside the housing 14. The limit switch 8 can prevent the guide seat 15 from exceeding its normal working range, thereby avoiding mechanical damage or equipment failure caused by overshoot. The limit switch 8 can ensure that the guide seat 15 stops moving at the correct position, improving the overall reliability and accuracy of the actuator. By detecting the extreme position, more precise control of the actuator can be achieved to ensure the accurate opening and closing positions of the valve 3.

[0039] Both ends of the rack 10 are respectively connected with a guide seat 15, and the guide seat 15 is slid left and right in cooperation with the guide grooves 6 on the inner walls of the upper and lower ends of the housing 14. The sliding of the guide seat 15 along the guide groove 6 can ensure the accuracy and stability of the movement of the rack 10, which helps to improve the working efficiency of the actuator. The cooperation between the guide groove 6 and the guide seat 15 reduces the direct friction between the rack 10 and the guide seat 15, and prolongs the service life of the components. The design of the guide groove 6 allows the guide seat 15 to move within a certain range, which provides convenience for the debugging and adjustment of the actuator.

[0040] Inside the housing 14, there is a guide rail 5 that cooperates with the rack 10 for limited guiding sliding. The guide rail 5 provides an accurate guiding path for the rack 10, which helps to maintain the linear movement of the rack 10 and improve the working precision of the actuator. The use of the guide rail 5 reduces the direct friction between the rack 10 and the inner wall of the housing 14, and prolongs the service life of the components. The design of the guide rail 5 makes the installation and maintenance of the rack 10 more convenient, and reduces the risk of failures caused by improper installation or insufficient maintenance.

[0041] At least two spring end grooves 16 are arranged on the outside of the guide seat 15, and corresponding to the spring end grooves 16 on the side wall of the housing 14, there are housing end grooves 17. The return springs 9 are respectively arranged between the spring end grooves 16 and the housing end grooves 17. The arrangement of the return springs 9 helps to provide a more stable return force for the actuator, ensuring that the actuator can accurately return to the initial position. By arranging the return springs 9 at multiple positions, a uniform distribution of the return force of the actuator can be achieved, reducing the fatigue damage caused by local stress concentration. The design of the end grooves of the return springs 9 and the housing end grooves 17 allows the springs to be adjusted to optimize the performance of the actuator.

[0042] In traditional actuators, when the power supply is cut off, the reset of the actuator is achieved by the spring releasing energy, which requires the return spring 9 to have sufficient energy to drive the reset action of the actuator. However, the present utility model can convert the opening degree of the valve 3 into electric energy during the normal operation of the ship system to provide continuous power supply for the actuator. In this way, in the case of power failure, the actuator can use the stored electric energy for reset instead of relying on spring energy storage. It can have both manual and electric operation modes, which means it can not only be driven electrically but also be operated manually, improving the operation flexibility when there is no power supply. It is more suitable for situations where manual operation is more important or in an environment with unstable power supply, such as a ship system, where manual operation can be used as a backup mode. The manual operation mode may provide a more direct means of safety control in some emergency situations.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electric regulating actuator for marine valves, characterized in that, Comprising: A driving motor (1), the driving motor (1) is installed inside the actuator housing (2), the driving motor (1) drives the straight-tooth output shaft (11) through a transmission mechanism, and the rotational movement of the straight-tooth output shaft (11) directly controls the opening or closing of the valve (3); An elastic rotational reset mechanism, the elastic rotational reset mechanism is arranged in cooperation with the straight-tooth output shaft (11), the elastic rotational reset mechanism includes a housing (14) through which the straight-tooth output shaft (11) passes, a rack (10) arranged inside the housing (14) and meshing with the shaft teeth on the straight-tooth output shaft (11), a guide seat (15) for fixing the rack (10), and a reset spring (9) located between the rear side of the guide seat (15) and the housing (14). When the driving motor (1) is powered on and starts to rotate, it drives the straight-tooth output shaft (11) to rotate through the transmission mechanism, thereby controlling the opening or closing of the valve (3); A micro generator (12), the micro generator (12) is installed inside the actuator housing (2), the micro generator (12) senses the change in the opening of the valve (3) through a mechanical device connected to the valve (3), the change in the opening of the valve (3) is converted into mechanical energy, and the mechanical energy is converted into electrical energy through the micro generator (12) and stored in the power system of the actuator to provide electrical energy for the actuator; A brake (13), the brake (13) is located on the driving motor (1). After the straight-tooth output shaft (11) is driven to the in-place position, the brake switch is triggered, the brake switch starts the brake (13), and the brake (13) engages to stop the output shaft of the driving motor (1) from rotating.

2. The electric regulating actuator for marine valves according to claim 1, wherein: A manual release mechanism (7) for allowing manual rotation of the straight-tooth output shaft (11) to drive the valve is provided on the transmission mechanism, which can be manually operated in the event of a power failure without the need for the drive of the driving motor (1).

3. The electric regulating actuator for marine valves according to claim 1, wherein: The actuator housing (2) is connected to the housing (14) through a bracket (4).

4. The electric regulating actuator for marine valves according to claim 1, characterized in that: A limit switch (8) for detecting the extreme position of the movement of the guide seat (15) to prevent overshoot is installed inside the housing (14).

5. The electric regulating actuator for marine valves according to claim 1, characterized in that: Both ends of the rack (10) are respectively connected with a guide seat (15), and the guide seat (15) is slidably guided left and right in cooperation with the guide grooves (6) on the inner walls of the upper and lower ends of the housing (14).

6. The electric regulating actuator for marine valves according to claim 1, characterized in that: A guide rail (5) for limiting and guiding the sliding of the rack (10) is provided inside the housing (14).

7. The electric regulating actuator for marine valves according to claim 1, characterized in that: At least two spring end grooves (16) are provided on the outer side of the guide seat (15), and housing end grooves (17) corresponding to the spring end grooves (16) are provided on the side wall of the housing (14), and the reset springs (9) are respectively arranged between the spring end grooves (16) and the housing end grooves (17).

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