Electric actuating mechanism of ship deep sea high-pressure valve

Abstract

An electric actuating mechanism of a ship deep-sea high-pressure valve comprises a shell, a motor, an output shaft assembly, a worm assembly, a compensation assembly and a multi-stage gear assembly, and the multi-stage gear assembly comprises a first-stage small gear, a fourth-stage large gear and a multi-stage duplicate gear assembly arranged between the first-stage small gear and the fourth-stage large gear; the vertically-arranged output shaft assembly is located in the middle, the horizontally-arranged motor is arranged on one side of the output shaft assembly, and the horizontally-arranged worm assembly is arranged on the other side of the output shaft assembly. An inner cavity of the shell is divided into a first containing cavity and a second containing cavity through a bearing mounting plate, the first containing cavity comprises a motor containing cavity used for containing a motor, the portion, outside the motor containing cavity, of the first containing cavity contains a worm assembly and an output shaft assembly, and a multi-stage duplicate gear assembly is contained in the middle of the second containing cavity. An output shaft of the motor extending into the second containing cavity on one side of the multi-stage duplicate gear assembly is fixedly connected with the first-stage pinion. The utility model has the advantages of light weight, small volume, fine vibration resistance and strong impact resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of deep-sea high-pressure valves, in particular to an electric actuator for a deep-sea high-pressure valve on a ship. Background Art

[0002] At present, the actuators used for deep-sea valves are hydraulically driven. The hydraulically driven actuators require a hydraulic oil source system, a piping system, a switching valve system, a pressure control system, and a hydraulic monitoring system. They are large in size, require a large installation space, have a complex structure, and are difficult to use and maintain. Since the deep sea is a high-pressure environment, the cost of the hydraulically driven actuator to resist the pressure is high, and it also results in a large size and a large weight. Especially when multiple deep-sea valves are used, the space and weight occupied by the deep-sea ship are further increased, which does not meet the needs of miniaturization and lightweighting of deep-sea ships. Summary of the Invention

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and to provide an electric actuator for a ship's deep-sea high-pressure valve which is light in weight, small in size, and highly resistant to vibration and impact.

[0004] The solution of the utility model is as follows: it includes a housing, a motor, an output shaft assembly, a worm assembly, a compensation assembly, and a multi-stage gear assembly, wherein the multi-stage gear assembly includes a first-stage pinion, a fourth-stage gear, and a multi-stage double gear assembly disposed between the first-stage pinion and the fourth-stage gear; a vertically arranged output shaft assembly is located in the middle, a horizontally arranged motor is disposed on one side of the output shaft assembly, and a horizontally arranged worm assembly is disposed on the other side of the output shaft assembly;

[0005] The inner cavity of the housing is divided into a first accommodating chamber and a second accommodating chamber by a bearing mounting plate. The first accommodating chamber includes a motor accommodating chamber for accommodating the motor. The first accommodating chamber outside the motor accommodating chamber accommodates a worm assembly and an output shaft assembly. The middle part of the second accommodating chamber accommodates a multi-stage double gear assembly. The output shaft of the motor extending into the second accommodating chamber on one side of the multi-stage double gear assembly is connected and fixed to a first-stage pinion. The worm assembly includes a worm. The end of the worm extending into the second accommodating chamber on the other side of the multi-stage double gear assembly is fixed to a fourth-stage large gear. The first-stage small gear, the multi-stage double gear assembly, and the fourth-stage large gear are meshed in sequence to form a transmission assembly.

[0006] The output shaft assembly comprises an output shaft for connecting with a valve stem and a worm wheel for engaging with a worm, wherein the worm wheel is fixed on a cylindrical surface of the output shaft.

[0007] The multi-stage double gear assembly includes a first-stage double gear assembly, a second-stage double gear assembly, and a third-stage double gear assembly. The third-stage double gear assembly is connected to the worm gear through a fourth-stage large gear.

[0008] The upper part of the shell corresponding to the accommodating chamber 1 has an upper mounting hole corresponding to the output shaft, and the bearing cover for positioning the upper end of the output shaft is installed at the upper mounting hole; the lower part of the shell has a lower mounting hole for installing the lower end of the output shaft.

[0009] The worm wheel is a fan-shaped worm wheel, and the lower end of the bearing cover is provided with a fan-shaped boss that contacts the fan-shaped worm wheel and is used to output a mechanical limit.

[0010] The outer ring of the bearing cover has a flange with a mounting hole, and a circular boss is provided under the bearing cover. The lower end of the circular boss has a sector-shaped boss that contacts the sector-shaped worm gear for outputting mechanical limit.

[0011] Seals are provided between the bearing cover and the housing, between the output shaft and the housing, and between the side plate and the housing.

[0012] The fourth sealing ring is placed between the bearing cover and the housing to seal the bearing cover and the housing; the fifth sealing ring is placed between the output shaft and the housing to seal the output shaft and the housing; the sixth sealing ring is placed between the side plate and the housing to seal the side plate and the housing. The fourth sealing ring, the fifth sealing ring, and the sixth sealing ring constitute a sealing member.

[0013] The upper end of the output shaft is connected to a position sensor.

[0014] The transmission parts include transmission assembly, worm assembly and worm gear.

[0015] The vertically arranged output shaft assembly of the housing of the present invention is located in the middle, the horizontally arranged motor and worm assembly are located on either side of the output shaft assembly, and the transmission assembly is placed at the ends of the output shaft and worm assembly. The motor and worm assembly are arranged symmetrically along the output shaft assembly. This layout gives the housing a flat structure, lowering the center of gravity of the overall structure of the present invention, thereby structurally improving the vibration and impact resistance of the present invention. Valve position information is collected through the transmission component, and the motor is used to drive the transmission component. Compared with hydraulic systems, the motor has higher accuracy, faster response speed, lower failure rate, higher safety, simple and compact structure, convenient layout, good stability performance, and is conducive to the miniaturization and lightweighting of ships. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a diagram of the use state of the utility model;

[0017] Figure 2 It is a structural diagram of the utility model;

[0018] Figure 3 This is one of the partial cross-sectional views of the present utility model;

[0019] Figure 4 This is the second partial cross-sectional view of the utility model;

[0020] Figure 5is a schematic diagram of the output shaft assembly;

[0021] Figure 6 is a schematic diagram of the worm assembly;

[0022] Figure 7 This is a schematic diagram of the bearing cover. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Figure 1 In the figure, the direction inside the paper is the back, the direction outside the paper is the front, and the up, down, left and right directions remain unchanged.

[0025] Figure 1-4In the figure, the electric actuator for a deep-sea high-pressure valve on a ship includes a motor 1, a position sensor 2, an output shaft assembly 3, a worm assembly 4, a control assembly 5, a bearing mounting plate 6, a side plate 7, a first socket 8, a compensation assembly 9, a housing 10, a bearing cover 11, a first-stage pinion 12, a first-stage duplex gear assembly 13, a second-stage duplex gear assembly 14, a third-stage duplex gear assembly 15, a cable assembly 16, and a plug 17. The front-end wires of the motor are connected to the control assembly 5 through the first socket 8 and the cable assembly 16 to form a motor power supply control circuit. The front-end wires of the motor are the lead wires of the three-phase motor winding and the rotor position sensor. The three-phase wires are the lead wires of the three-phase motor winding and supply power to the motor winding. The lead wires of the rotor position sensor are the lead wires of the position sensor at the tail of the motor rotor and supply power to the position sensor and provide feedback of the rotor position signal. The front-end wires of the motor pass through the square wiring groove 10V at the front end of the housing. The cylindrical outer shell of the motor 1 is placed horizontally in the horizontal cylindrical cavity on the lower right side of the shell 10. The circular mounting surface at the front end of the motor 1 is connected and fixed to the bearing mounting plate 6 by five screws. The cylindrical output shaft at the front end of the motor 1 is connected and fixed to the cylindrical inner hole of the first-stage pinion 12 by a retaining ring. The first-stage pinion 12 has a circumferential tooth profile in the front and rear horizontal directions, and a right cylindrical boss in the front and rear of the tooth profile, and a flat through hole in the middle of the cylindrical boss; the left side of the first-stage pinion 12 is meshed with the right side of the first-stage double gear assembly 13, and the left side of the first-stage double gear assembly 13 is meshed with the right side of the second-stage double gear assembly 14. The left side of the second-stage double gear assembly 14 is meshed with the right side of the third-stage double gear assembly 15, and the left side of the third-stage double gear assembly 15 is meshed with the right side of the fourth-stage large gear 4d of the worm assembly 4. The first-stage double gear assembly 13, the second-stage double gear assembly 14, and the third-stage double gear assembly 15 are placed horizontally between the bearing mounting plate 6 and the side plate 7.The right side of the cylindrical surface of the middle worm of the worm assembly 4 is meshed with the left side of the cylindrical surface of the middle worm wheel 3b of the output shaft assembly 3. The worm assembly 4 is horizontally installed in the cylindrical cavity on the left side of the housing 10. The end of the middle worm of the worm assembly 4 is positioned by the bearing mounting plate 6. The output shaft assembly 3 is vertically placed between the middle cylindrical cavity of the housing 10 and the bearing cover 11. The position sensor 2 is horizontally placed between the output shaft assembly 3 and the bearing cover 11. The upper end face of the position sensor 2 is fixedly connected to the circular boss 11a on the upper part of the bearing cover 11 by four screws. The lower end face of the position sensor 2 is fixedly connected to the upper end face of the output shaft 3a in the output shaft assembly 3 by four screws. The position sensor 2 is connected to the control assembly 5 through the first socket 8 and the cable assembly 16 to form a position information feedback loop. The cylindrical boss at the lower end of the bearing cover 11 is placed in the middle cylindrical cavity of the housing 10 and is fixed by six screws. The rear end face of the side plate 7 is fixed by ten screws Fixed on the front end face of the shell 10, the front end of the compensation component 9 is fixed to the middle of the left side of the shell 10 by four screws, the bottom surface of the control component 5 is connected and fixed to the four cylindrical surfaces on the upper end of the shell 10 by four screws, and the rear end face of the bearing mounting plate 6 is connected and fixed to the rear end face of the waist-shaped cavity at the front end of the shell 10 by six screws. The first socket 8 is placed in the middle of the left side of the shell 10 and is connected and fixed by four screws. The first socket 8 is placed below the compensation component 9, the first plug at the lower end of the cable assembly 16 is connected and fixed to the first socket 8, and the second plug 16b at the upper end of the cable assembly 16 is connected and fixed to the second socket 5d on the left side of the control component 5, and the blocking cap 17 is installed on the cylindrical boss 10u at the upper left end of the waist-shaped body of the shell 10; the middle part of the bearing cover 11 has an installation space for accommodating the position sensor 2, and the lower part of the installation space has a positioning groove for positioning the second bearing 3d of the output shaft assembly, and the outer ring of the bearing cover 11 has a circle of mounting holes. The fourth sealing ring 18 is placed between the bearing cover 11 and the housing 10 to seal the bearing cover 11 and the housing 10; the fifth sealing ring 19 is placed between the output shaft 3a and the housing 10 to seal the output shaft 3a and the housing 10; the sixth sealing ring 20 is placed between the side plate 7 and the housing 10 to seal the side plate 7 and the housing 10. The fourth sealing ring 18, the fifth sealing ring 19, and the sixth sealing ring 20 constitute a sealing member.

[0026] Figure 5 In the figure, the output shaft assembly 3 includes an output shaft 3a, a worm gear 3b, a first bearing 3c, a second bearing 3d, and a screw 3e. The worm gear 3b is fixed to the middle cylindrical surface of the output shaft 3a by the screw 3e, the first bearing 3c is placed on the lower cylindrical surface of the output shaft 3a, and the second bearing 3d is placed on the upper cylindrical surface of the output shaft 3a.

[0027] Figure 6In the figure, the worm assembly 4 includes a worm 4a, a third bearing 4b, a fourth bearing 4c, a four-stage large gear 4d, a flat key 4e, and a retaining ring 4f. The third bearing 4b is placed on the cylindrical surface of the tail end of the worm 4a, the fourth bearing 4c is placed on the cylindrical surface of the front end of the worm 4a, the four-stage large gear 4d is placed in front of the fourth bearing 4c, the flat key 4e is placed between the four-stage large gear 4d and the worm 4a, and the retaining ring 4f is placed at the front end of the four-stage large gear 4d.

[0028] Figure 7 In the figure, the worm gear is a fan-shaped worm gear, and the outer ring of the bearing cover 11 has a flange 11b, and the flange 11b has a mounting hole for installing the bearing cover. There is a circular boss 11c under the bearing cover 11, and the lower end of the circular boss 11c has a fan-shaped boss 11j that contacts the fan-shaped worm gear for output mechanical limit to prevent overshoot when the output shaft rotates.

[0029] In the present invention, the motor 1 is a power source that converts electrical energy into mechanical energy, the position sensor 2 provides the output shaft rotation position information, the output shaft assembly is connected to the outside and transmits torque, the worm assembly converts horizontal torque into vertical torque, and the control assembly 5 controls the operation of the motor 1 according to external instructions and output position information. The side plate and the bearing mounting plate jointly support the horizontal transmission gear assembly, the first socket is connected to the external power supply and communication, the compensation assembly realizes the pressure compensation function, the housing and the bearing cover are installed to fix other parts, the first-stage pinion, the first-stage double gear assembly, the second-stage double gear assembly, and the third-stage double gear assembly convert the motor output power into the required output low speed.

[0030] When the valve needs to be opened, the motor 1 works in the forward direction. The high-speed, low-torque power of the motor 1 is converted into a low-speed, high-torque output torque through the transmission assembly and the worm gear. The torque is transmitted to the valve stem through the output shaft 3a, causing the valve to open.

[0031] When the valve needs to be closed, motor 1 works in reverse, and the high-speed, low-torque power of motor 1 is converted into low-speed, high-torque output torque through the transmission assembly and the worm gear, and the torque is transmitted to the valve stem through the output shaft to close the valve.

[0032] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An electric actuator for a deep-sea high-pressure valve on a ship, characterized by: The invention comprises a housing (10), a motor (1), an output shaft assembly (3), a worm assembly (4), a compensation assembly (9), and a multi-stage gear assembly, wherein the multi-stage gear assembly comprises a first-stage pinion (12), a fourth-stage large gear (4d), and a multi-stage double gear assembly disposed between the first-stage pinion (12) and the fourth-stage large gear (4d); a vertically disposed output shaft assembly is located in the middle, a horizontally disposed motor is disposed on one side of the output shaft assembly, and a horizontally disposed worm assembly is disposed on the other side of the output shaft assembly; The inner cavity of the housing (10) is divided into a first accommodating cavity and a second accommodating cavity by a bearing mounting plate (6). The first accommodating cavity includes a motor accommodating cavity for accommodating the motor (1). The first accommodating cavity outside the motor accommodating cavity accommodates a worm assembly (4) and an output shaft assembly (3). The middle portion of the second accommodating cavity accommodates a multi-stage double gear assembly. The output shaft of the motor (1) extending into the second accommodating cavity on one side of the multi-stage double gear assembly is connected and fixed to a first-stage pinion (12). The worm assembly (4) includes a worm (4a). The end portion of the worm (4a) extending into the second accommodating cavity on the other side of the multi-stage double gear assembly is fixed to a fourth-stage large gear (4d). The first-stage small gear (12), the multi-stage double gear assembly, and the fourth-stage large gear (4d) are meshed in sequence to form a transmission assembly. The output shaft assembly (3) comprises an output shaft (3a) for connecting to a valve stem, and a worm wheel (3b) for meshing with a worm (4a); the worm wheel (3b) is fixed on the cylindrical surface of the output shaft (3a).

2. The electric actuator for a deep-sea high-pressure valve on a ship according to claim 1, characterized in that: The multi-stage double gear assembly comprises a first-stage double gear assembly (13), a second-stage double gear assembly (14), and a third-stage double gear assembly (15). The third-stage double gear assembly (15) is connected to the worm (4a) via a fourth-stage large gear (4d).

3. The electric actuator for a deep-sea high-pressure valve on a ship according to claim 1, characterized in that: The upper portion of the housing (10) corresponding to the first accommodating chamber has an upper mounting hole corresponding to the output shaft (3a), and a bearing cover (11) for positioning the upper end of the output shaft (3a) is mounted at the upper mounting hole; the lower portion of the housing (10) has a lower mounting hole for mounting the lower end of the output shaft (3a).

4. The electric actuator for a deep-sea high-pressure valve on a ship according to claim 3, characterized in that: The worm wheel is a fan-shaped worm wheel, and the lower end of the bearing cover (11) is provided with a fan-shaped boss that contacts the fan-shaped worm wheel and is used to output a mechanical limit.

5. The electric actuator for a deep-sea high-pressure valve on a ship according to claim 4, characterized in that: The outer ring of the bearing cover (11) has a flange (11b), the flange (11b) has a mounting hole, a circular boss (11c) is provided below the bearing cover (11), and a fan-shaped boss (11j) is provided at the lower end of the circular boss (11c) for contacting the fan-shaped worm gear and outputting a mechanical limit.

6. The electric actuator for a deep-sea high-pressure valve on a ship according to claim 1, characterized in that: Seals are provided between the bearing cover (11) and the housing (10), between the output shaft (3a) and the housing (10), and between the side plate (7) and the housing (10).

7. The electric actuator for a deep-sea high-pressure valve on a ship according to claim 6, characterized in that: The fourth sealing ring (18) is placed between the bearing cover (11) and the housing (10) to seal the bearing cover (11) and the housing (10); the fifth sealing ring (19) is placed between the output shaft (3a) and the housing (10) to seal the output shaft (3a) and the housing (10); the sixth sealing ring (20) is placed between the side plate (7) and the housing (10); the fourth sealing ring (18), the fifth sealing ring (19), and the sixth sealing ring (20) constitute a sealing member.

8. The electric actuator for a deep-sea high-pressure valve on a ship according to claim 1, characterized in that: The upper end of the output shaft (3a) is connected to a position sensor (2).

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