A deep sea high pressure valve pressure compensation electric actuator for a ship

Abstract

A kind of warship deep sea high pressure valve pressure compensation electric actuator, including shell, motor, output shaft assembly, worm assembly, compensation assembly, multistage gear assembly, multistage gear assembly includes one-stage pinion, four-stage gear, multistage double gear assembly between one-stage pinion and four-stage gear;Vertically arranged output shaft assembly is located in the middle, the one side of output shaft assembly is horizontally arranged motor, the other side of output shaft assembly is horizontally arranged worm assembly;Shell inner cavity is separated into accommodating cavity one and accommodating cavity two by bearing mounting plate, accommodating cavity one includes motor accommodating cavity for accommodating motor, the accommodating cavity one outside motor accommodating cavity accommodates worm assembly, output shaft assembly, the multistage double gear assembly is accommodated in the middle of accommodating cavity two, the output shaft of motor in the accommodating cavity two of the side of multistage double gear assembly is connected and fixed with one-stage pinion.The present application has the advantages of light weight, small size, low failure, high precision, fast response and high reliability.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of deep-sea high pressure, and particularly relates to a pressure compensation electric actuator of a deep-sea high pressure valve of a ship. BACKGROUND

[0002] At present, an execution mechanism for a deep-sea valve adopts a hydraulic drive mode, and the hydraulic drive execution mechanism needs a hydraulic oil source system, a pipeline system, a switching valve system, a pressure control system and a hydraulic monitoring system, is large in size, needs a large installation space, is complex in structure and difficult to use and maintain, and needs a large cost to resist pressure due to a high-pressure environment of the deep sea, and is large in size and weight, especially in the case of multiple deep-sea valves, the space and weight of the deep-sea ship are further increased, and the demand for miniaturization, integration and light weight of the deep-sea ship is not met.

[0003] The informatization of the deep-sea ship is increasingly required, and the equipment on the ship needs to feed back the working state in real time, and the equipment on the ship needs to unify the communication interface and improve the operability of the man-machine interface due to the informatization requirement, and the hydraulic drive execution mechanism needs to additionally occupy the limited space due to the use of electronic components and sensors in the high-pressure environment of the deep sea, and the wiring cost is high due to the collection of multiple hydraulic information, and the pressure resistance cost is high, which is not conducive to integration, light weight, miniaturization and informatization.

[0004] The deep-sea ship has normal pressure and high pressure environment, and low temperature and high temperature environment, and the compressibility of the liquid causes the oil container to need pressure-resistant design in the process of mutual change of the normal pressure and the high pressure, and the thermal expansion and contraction effect of the liquid causes the oil volume to expand at high temperature, and the pressure is greatly increased in the fixed volume to generate high pressure, and the oil volume is reduced at low temperature, and the pressure is greatly reduced in the fixed volume to generate negative pressure, so the oil container needs pressure-resistant design and pressure compensation design, and the complexity of the hydraulic system is increased.

[0005] In the case of limited space on the deep-sea ship, maintenance is difficult, the equipment needs to be high in reliability and low in maintenance frequency, and needs to have functions such as fault feedback and remote control, the deep-sea ship involves personal safety, and strictly requires the equipment to be safe and reliable and not to endanger personal safety, the hydraulic drive execution mechanism is low in fault detection capability, slow in pressure fault response and remote control response, and is not conducive to the safety of the ship, and the hydraulic system needs regular maintenance, the hydraulic oil and the rubber sealing element need to be replaced regularly according to the warranty period, the hydraulic system needs to be checked for sealing performance after replacement, and the maintenance cost is high, so the hydraulic drive execution mechanism is not conducive to the popularization and application of deep-sea technology. SUMMARY

[0006] The present application aims at overcoming the above-mentioned deficiencies of the prior art, and provides a ship deep-sea high-pressure valve pressure compensation electric actuator which is light in weight, small in size, low in failure, high in precision, fast in response and high in reliability.

[0007] The present application is characterized in that:

[0008] The present application is characterized in that:

[0009] The inner cavity of the shell is divided into a containing cavity I and a containing cavity II by a bearing mounting plate, the containing cavity I includes a motor containing cavity for containing the motor, the containing cavity I outside the motor containing cavity contains the worm assembly and the output shaft assembly, the containing cavity II contains the multi-stage double gear assembly in the middle, the output shaft of the motor extending into the containing cavity II on one side of the multi-stage double gear assembly is connected and fixed with the primary pinion, the worm assembly includes a worm, the end of the worm extending into the containing cavity II on the other side of the multi-stage double gear assembly is fixed with the four-stage gear, and the primary pinion, the multi-stage double gear assembly and the four-stage gear are sequentially engaged to form a transmission assembly.

[0010] The output shaft assembly includes an output shaft for being connected with a valve rod and a worm gear for being engaged with the worm, and the worm gear is fixed on the cylindrical surface of the output shaft.

[0011] The upper part of the shell corresponding to the containing cavity II is provided with an oil filling hole, and a plug cap is detachably connected at the oil filling hole; and the side part of the shell corresponding to the containing cavity II is provided with a leather cup butt joint.

[0012] The upper part of the shell corresponding to the containing cavity I is provided with an upper mounting hole corresponding to the output shaft, a position sensor is connected on the output shaft, a bearing cover for positioning the upper end of the output shaft is arranged at the upper mounting hole; and the lower part of the shell is provided with a lower mounting hole for mounting the lower end of the output shaft.

[0013] The compensation assembly is mounted outside the shell, and the compensation assembly includes a leather cup and a leather cup shield covering the leather cup, the leather cup is provided with a cup mouth at one end, and the inner cavity of the leather cup is communicated with the containing cavity II through the cup mouth and the leather cup butt joint.

[0014] Sealing elements are arranged between the bearing cover and the shell, between the output shaft and the shell, and between the side plate and the shell.

[0015] The surface of the leather cup shield is provided with a plurality of through holes, and the shape of the leather cup shield is matched with the shape of the leather cup.

[0016] The multi-stage double gear assembly comprises a first double gear assembly, a second double gear assembly and a third double gear assembly, and the third double gear assembly is connected with the worm gear through a fourth gear;

[0017] The fourth sealing ring is arranged between the bearing cover and the shell to seal the bearing cover and the shell; the fifth sealing ring is arranged between the output shaft and the shell to seal the output shaft and the shell; and the sixth sealing ring is arranged between the side plate and the shell to seal the side plate and the shell, and the fourth sealing ring, the fifth sealing ring and the sixth sealing ring form a sealing member.

[0018] The worm gear is a fan-shaped worm gear, and the lower end of the bearing cover is provided with a fan-shaped boss in contact with the fan-shaped worm gear for outputting mechanical limiting to avoid position overshoot when the output shaft rotates.

[0019] The use method is as follows: the cap is opened, hydraulic oil is filled into the shell and the rubber bowl, during the hydraulic oil filling process, the rubber bowl is pressed to discharge the excess air through the oil filling hole; when the hydraulic oil in the shell and the rubber bowl is filled to the brim, the hydraulic oil is left to stand, after the standing is completed, the rubber bowl is pressed to discharge the excess air through the oil filling hole, and the air discharge is completed; after the air discharge is completed, the cap is sealed on the shell; the valve stem is connected with the output shaft;

[0020] When the valve needs to be opened, the driving motor is driven to work in the forward direction, the high-speed and low-torque power of the motor is converted into low-speed and 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 open the valve;

[0021] When the valve needs to be closed, the driving motor is driven to work in the reverse direction, the high-speed and low-torque power of the motor is converted into low-speed and 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.

[0022] The control assembly is further arranged above the shell, and the control assembly comprises a control shell, a control cover and a controller, the controller is arranged in the control shell, the control cover is sealingly connected to the control shell, and the control shell is provided with a second socket, a third socket and a fourth socket on the side surface; the controller is connected with the second socket, the third socket and the fourth socket through wires to form a power supply and signal transmission loop;

[0023] The shell is provided with a first socket connected with a position sensor on the outer side surface, the front end of the motor is provided with wires, the wires pass through the shell, the first socket and a cable assembly to be connected with the control assembly to form a motor power supply control loop; and the position sensor is connected with the control assembly through the first socket and the cable assembly to form a position information feedback loop.

[0024] The use method is: first, open the cap, fill the hydraulic oil into the shell and the inside of the rubber bowl, press the rubber bowl during the filling of the hydraulic oil, and discharge the excess air through the oil filling hole; when the hydraulic oil in the shell and the inside of the rubber bowl is filled, the hydraulic oil is stationary, after the stationary is finished, the rubber bowl is pressed, and the excess air is discharged through the oil filling hole; after the exhaust is finished, the cap is installed and sealed on the shell; then the control assembly is installed above the shell, the cable assembly is connected with the control assembly and the first socket; the valve stem is connected with the output shaft;

[0025] When the valve needs to be opened, the valve opening instruction is transmitted to the control assembly through the third socket, the control assembly drives the motor to work in the forward direction, the high-speed low-torque power of the motor is converted into 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, the valve is opened, the position sensor detects the output shaft rotation position information, and the position information feedback loop transmits the output shaft rotation position information to the control assembly, when the control assembly judges that the output shaft rotation position information is in the valve opening state, the motor power supply control loop controls the motor to be powered off; during the process of diving from the sea surface to the external environment, the external seawater pressure increases, the seawater pressure is transmitted to the rubber bowl, the internal oil volume decreases during the pressure increase process, the rubber bowl deforms inward, the internal volume of the rubber bowl decreases, the volume of the compensation oil decreases, so that the internal and external pressure difference keeps a small value, and the shell and the sealing element are equivalent to a low-pressure seal;

[0026] When the valve needs to be closed, the valve closing instruction is transmitted to the control assembly through the third socket, the control assembly drives the motor to work in the reverse direction, the high-speed low-torque power of the motor is converted into 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, the valve is closed, the position sensor detects the output shaft rotation position information, and the position information feedback loop transmits the output shaft rotation position information to the control assembly, when the control assembly judges that the output shaft rotation position information is in the valve closing state, the motor power supply control loop controls the motor to be powered off; during the process of rising from the deep sea to the sea surface, the external seawater pressure decreases, the seawater pressure decreases, and the change is transmitted to the top, the internal oil volume increases during the pressure decrease process, the rubber bowl deforms outward, the internal volume of the rubber bowl increases, the volume of the compensation oil increases, and the internal and external pressure difference is also kept small.

[0027] The utility model provides a kind of warship deep sea high pressure valve pressure compensation electric actuator, including motor, position sensor, output shaft assembly, worm assembly, control assembly, bearing mounting plate, side plate, first socket, compensation assembly, shell, bearing cover, primary pinion, primary double gear assembly, secondary double gear assembly, tertiary double gear assembly, cable assembly, plug cap, the wire of motor front end is connected with control assembly through first socket, cable assembly and form motor power supply control loop, motor cylindrical shell is horizontally placed in shell right lower side horizontal cylindrical cavity, motor front end circular mounting surface is connected and fixed with bearing mounting plate by five screws, motor front end cylindrical output shaft is connected and fixed with primary pinion cylindrical inner hole by baffle, the left side of the primary pinion is engaged with the right side of primary double gear assembly, the left side of the primary double gear assembly is engaged with the right side of secondary double gear assembly, the left side of the secondary double gear assembly is engaged with the right side of tertiary double gear assembly, the left side of the tertiary double gear assembly is engaged with the right side of worm assembly four-stage big gear, the primary double gear assembly, secondary double gear assembly, tertiary double gear assembly are horizontally placed between bearing mounting plate and side plate, the cylindrical surface right side of worm assembly middle worm is engaged with the cylindrical surface left side of output shaft assembly middle worm wheel, worm assembly is horizontally installed in shell left side cylindrical cavity, worm assembly middle worm end is positioned by bearing mounting plate, the output shaft assembly is vertically placed between shell middle cylindrical cavity and bearing cover, the position sensor is horizontally placed between output shaft assembly and bearing cover, the upper end surface of position sensor is fixedly connected with the upper part of bearing cover with circular boss by four screws, the lower end surface of position sensor is fixedly connected with the upper end surface of output shaft assembly in output shaft assembly by four screws, position sensor is connected with control assembly through first socket, cable assembly and form position information feedback loop, the cylindrical boss lower end of bearing cover is placed in shell middle cylindrical cavity and is connected and fixed by six screws, the rear end surface of side plate is fixed on the front end surface of shell by ten screws, the front end of compensation assembly is fixed in the left side of shell middle by four screws, the bottom surface of control assembly is fixedly connected with the upper end four cylindrical surfaces of shell by four screws, the rear end surface of bearing mounting plate is fixedly connected with the rear end surface of shell front end waist-shaped cavity by six screws, first socket is placed in the left side of shell middle and is connected and fixed by four screws, first socket is placed below compensation assembly, the first plug of cable assembly lower end is fixedly connected with first socket, the second plug of cable assembly upper end and the second socket left side of control assembly are fixedly connected, plug cap is installed on the cylindrical boss upper end left side of shell waist-shaped body;

[0028] The left side of the shell is a horizontal small cylinder, the middle is a square body, the right side is a horizontal large cylinder, the front end is a waist-shaped body, the left side cylinder, the middle square body, the right side cylinder and the front end waist-shaped body are connected integrally, the left side cylinder is a horizontal cylindrical cavity, the middle square body is a square cavity, the right side cylinder is a horizontal cylindrical cavity, the front end waist-shaped body is a waist-shaped cavity, the left side cylindrical cavity, the middle square cavity, the right side cylindrical cavity and the front end waist-shaped cavity are communicated, the middle square cavity is separated from the right side cylindrical cavity, the middle square body has a vertical cylinder, the vertical cylinder has a cylindrical through hole in the middle, the vertical cylinder is surrounded by six evenly distributed screw holes, the cylindrical through hole is communicated with the direction cavity, the shell has four cylindrical bosses at the upper end, the cylindrical bosses have screw holes in the middle, the front end waist-shaped body has ten cylindrical bodies evenly distributed on the outside, the ten cylindrical bodies have screw holes in the middle, the front end waist-shaped body has a rhombus body on the left side, the rhombus body has a cylindrical hole in the middle, the cylindrical hole forms a skin bowl docking port, the cylindrical hole is communicated with the front end waist-shaped cavity, the front end waist-shaped body has a small square body below the left side rhombus body for fixedly connecting the first socket, the small square body has a cylindrical body at the front end, the small square body has a cylindrical through hole in the middle, the small square body has screw holes at the four corners, the cylindrical through hole is communicated with the front end waist-shaped cavity, the left side cylindrical body has a small cylindrical body on the left side, the small cylindrical body has a screw hole in the middle, the shell has a vertical cylindrical boss in the middle at the bottom, the cylindrical boss has a circular through hole in the middle, the circular through hole forms a lower mounting hole, the circular through hole is communicated with the square cavity, the cylindrical boss is surrounded by four small cylindrical bosses, the small cylindrical bosses have screw holes in the middle, the waist-shaped cavity has eight unevenly distributed screw holes at the rear end for connecting and fixing bearing mounting plates, the waist-shaped cavity has a square wiring slot at the rear end, the square wiring slot has a wire threading port for a position sensor, the waist-shaped body has a cylindrical boss at the upper end on the left side, the cylindrical boss has a refueling hole in the middle for installing a plug, the refueling hole is a screw hole, the refueling hole is communicated with the front end waist-shaped cavity, the cylindrical boss has a circular sealing groove at the upper end; the compensation assembly comprises a skin bowl and a skin bowl shield;

[0029] The bearing cover has a mounting space in the middle for mounting a position sensor, and a positioning groove below the mounting space for positioning a second bearing of the output shaft assembly, and a ring of mounting holes on the outer ring of the bearing cover;

[0030] The output shaft assembly comprises an output shaft, a worm gear, a first bearing, a second bearing and a screw, the worm gear is fixed on the middle cylindrical surface of the output shaft by the screw, the first bearing is placed on the lower end cylindrical surface of the output shaft, and the second bearing is placed on the upper end cylindrical surface of the output shaft;

[0031] The worm assembly comprises a worm, a third bearing, a fourth bearing, a four-stage large gear, a flat key and a check ring, the third bearing is placed on the tail end cylindrical surface of the worm, the fourth bearing is placed on the front end cylindrical surface of the worm, the four-stage large gear is placed in front of the fourth bearing, the flat key is placed between the four-stage large gear and the worm, and the check ring is placed at the front end of the four-stage large gear.

[0032] The control assembly comprises a control housing, a control cover, a controller, a second socket, a third socket, a fourth socket, a first control sealing ring, and a second control sealing ring. The controller is placed in the control housing cavity and fixed by screw connection. The control cover is placed above the control housing and fixed by screw connection. The controller is connected with the second socket, the third socket, and the fourth socket by wires to form a power supply and signal transmission loop. The first control sealing ring is placed between the horizontal contact surface of the control cover and the control housing. The second control sealing ring is placed between the vertical contact surface of the control cover and the control housing. The second socket is placed on the left outer wall of the control housing and fixed by screw connection. The third socket is placed on the left outer wall of the control housing and fixed by screw connection. The third socket is placed in front of the second socket. The fourth socket is placed on the left outer wall of the control housing and fixed by screw connection. The fourth socket is placed in front of the third socket.

[0033] 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 form a sealing member.

[0034] The bearing mounting plate is a waist-shaped plate. The inner surface of the bearing mounting plate has a cylindrical first boss. The first boss has a circular groove in the middle for positioning the motor. The end surface of the first boss has a circular hole one for fixing the motor. The circular groove has a shaft hole in the middle for passing out the motor output shaft. The inner surface of the bearing mounting plate also has a cylindrical third boss. The third boss has a positioning groove in the middle for positioning the fourth bearing. The positioning groove has an assembly hole in the middle for passing out the worm. The outer surface of the bearing mounting plate has a cylindrical second boss corresponding to the assembly hole. The outer surface of the bearing mounting plate also has a positioning groove one for positioning one end of the multi-stage double gear assembly. The inner surface of the side plate has a positioning groove two corresponding to the positioning groove one for positioning the other end of the multi-stage double gear assembly.

[0035] The inner surface of the bearing mounting plate between the third boss and the first boss has an avoidance groove for avoiding the worm.

[0036] The side plate is a waist-shaped plate.

[0037] The skin bowl is placed in the skin bowl shield inner cavity, the skin bowl rear end is a cuboid, the cuboid inside is a cuboid cavity, the skin bowl middle section is a cylinder, the cylinder middle is a circular cavity, the skin bowl front end is a rhombic body, the rhombic body middle is a circular hole, the skin bowl rear end cuboid cavity is communicated with the middle section circular cavity and the front end circular hole, the skin bowl shield rear end is a cuboid, the skin bowl shield cuboid inside is a cuboid cavity, the skin bowl shield rear end cuboid rear end is provided with a square hole, the skin bowl shield rear end cuboid middle is uniformly distributed with circular holes communicated with the cuboid cavity, the skin bowl shield middle section is a cylinder, the cylinder middle is a circular cavity, the skin bowl shield front end is a rhombic body, the rhombic body middle is a circular hole, the skin bowl shield rear end cuboid cavity is communicated with the middle section circular cavity and the front end circular hole.

[0038] The bearing cover upper portion has a circular boss, a convex cylinder is below the circular boss, the convex cylinder has a ring of mounting holes, a cylindrical boss is below the convex cylinder, a circular groove for positioning the second bearing of the output shaft assembly is in the middle of the lower cylindrical boss, a circular hole is above the circular groove, a cylindrical groove is above the circular hole, the circular hole and the cylindrical groove form a mounting space for mounting the position sensor, a square groove is on the left side of the lower cylindrical boss, the square groove has an inclined cylindrical hole inclined to the right, the inclined cylindrical hole is communicated with the upper cylindrical groove, a sector boss for outputting mechanical limit is in contact with the worm gear below the lower cylindrical boss, the worm gear is a sector worm gear;

[0039] The primary small gear has circumferential teeth on the front and back, the teeth have right cylindrical bosses in front and back, and flat through holes are in the middle of the cylindrical bosses;

[0040] The primary double gear assembly includes a primary large gear, a secondary small gear, a first bearing one, and a second bearing one, the secondary small gear is placed on the middle side cylindrical surface of the primary large gear, the first bearing one is placed on the front end cylindrical surface of the primary large gear, and the second bearing one is placed on the rear end cylindrical surface of the primary large gear;

[0041] The secondary double gear assembly includes a secondary large gear, a tertiary small gear, a third bearing one, and a fourth bearing one, the tertiary small gear is placed on the middle side cylindrical surface of the secondary large gear, the third bearing one is placed on the front end cylindrical surface of the secondary large gear, and the fourth bearing one is placed on the rear end cylindrical surface of the secondary large gear;

[0042] The tertiary double gear assembly includes a tertiary large gear, a quaternary small gear, a fifth bearing, and a sixth bearing, the quaternary small gear is placed on the middle side cylindrical surface of the tertiary large gear, the fifth bearing is placed on the left side cylindrical surface of the tertiary large gear, and the sixth bearing is placed on the right side cylindrical surface of the tertiary large gear;

[0043] The cable assembly comprises a first plug, a second plug, a vulcanized cable, the first plug is connected with the vulcanized cable at 90 degrees below the vulcanized cable, the second plug is connected with the vulcanized cable at 90 degrees above the vulcanized cable, the first plug and the second plug are staggered by 90 degrees in space, and the first plug and the second plug are communicated to form a loop through the vulcanized cable.

[0044] The plug cap comprises a plug, a third sealing ring, the upper end of the plug has a cylinder, the middle of the upper end cylinder has a hexagonal groove, the lower end of the upper end cylinder has an external thread cylinder, the external thread cylinder and the upper end cylinder have an annular groove in the middle, and the third sealing ring is placed in the annular groove of the plug.

[0045] In the application, the motor is a power source for converting electric energy into mechanical energy, the position sensor provides the rotating position information of the output shaft, the output shaft assembly is connected to the outside and transmits torque, the worm assembly converts the horizontal torque into the vertical torque, the control assembly controls the motor according to the external instruction and the 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 shell and the bearing cover are used for mounting and fixing other parts, the first pinion gear, the first double gear assembly, the second double gear assembly and the third double gear assembly convert the motor output power into the required low speed output.

[0046] The inventor applies the thermal expansion and contraction characteristics and compressible characteristics of oil, the temperature difference of the temperature environment used by the oil is 100 DEG C, the volume change of a certain amount of oil at different temperatures is calculated according to the oil expansion coefficient, and the volume change of a certain amount of liquid under the condition of fixed volume will cause the change of oil pressure according to the liquid pressure formula, that is, the volume will increase with the increase of temperature, but the pressure will increase because the container volume is constant, and vice versa. The deformable feature of the pressure compensation rubber bowl eliminates the influence of the constant container volume and the pressure change caused by temperature change. Meanwhile, the application is suitable for use in deep-sea high-pressure environment. Similarly, the pressure change will cause the volume change of the oil, and the influence of the pressure is eliminated by the deformation of the rubber bowl. The pressure compensation design of the application takes into account the influence of temperature and pressure change. According to the pressure formula, the pressure of the liquid with the same volume is greater, and the volume is smaller. In the deep-sea high-pressure environment, the external pressure of the shell is transmitted to the inside of the shell through the deformation of the rubber bowl, the volume of the rubber bowl is smaller, the volume of the oil is smaller, and the pressure of the oil is larger, which is close to the external deep-sea pressure, so that the internal and external pressures are basically consistent. Similarly, in the normal pressure environment, the volume of the oil is restored to the original volume through the rubber bowl, the pressure of the oil is restored to the normal pressure, and the internal and external pressures are basically consistent.

[0047] The vertically arranged output shaft assembly in the shell is located in the middle part, the horizontally arranged motor and worm assembly is located on both sides of the output shaft assembly, the transmission assembly is arranged at the end of the output shaft and worm assembly, the motor and worm assembly are symmetrically arranged along the output shaft assembly, the shell is in a flat structure through the layout, the gravity center of the overall structure of the application is lowered, and the anti-vibration and anti-impact ability of the application is improved in structure. The valve position information is collected through the transmission component, the motor is used to drive the transmission component, the motor has higher precision, faster response speed, lower failure rate and higher safety compared with the hydraulic system, the service life is greatly prolonged through test verification, the ability to withstand high temperature, low temperature, vibration, impact and other environmental influences, the structure is simple and compact, the arrangement is convenient, the stability performance is good, and the ship is small, light, information-based and integrated. The transmission component includes a transmission assembly, a worm assembly and a worm wheel.

[0048] The application does not set a spring, avoids the problem of poor stability with temperature changes relying on the compensation mode of spring elastic force. The application provides a ship deep-sea high-pressure valve pressure compensation electric actuator, which has small volume, high safety factor and low sealing cost. The pressure compensation structure balances the internal and external high-pressure environments of the transmission component, reduces the internal and external pressure difference, is beneficial to the rotary sealing of the transmission component, avoids the extremely high cost of high-pressure rotary sealing, simultaneously balances the internal and external pressures, reduces the demand for the pressure resistance of the shell, solves the pressure compensation and temperature compensation of the hydraulic pressure, and enables the shell to be lightweight and small in size. The ship has small size and light weight, and the occupied space and weight of the ship are reduced.

[0049] The amount of hydraulic oil used in the application is greatly reduced. Compared with 10L of hydraulic oil used in a 500Nm valve hydraulic drive device of a certain ship, the amount of hydraulic oil used in the ship deep-sea high-pressure valve pressure compensation electric actuator of the application is 0.9L, which fills the shell and the leather cup. The amount of oil is reduced to achieve lightweight.

[0050] In the application, the movable parts are soaked in oil, which plays a full lubricating role, avoids mechanical wear and tear, prolongs the service life of the movable parts and improves the reliability. The movable parts include a motor rotor, a bearing, a gear, a worm wheel and worm, an output shaft, a position sensor, a leather cup and a sealing ring.

[0051] In the application, the shell and the sealing element are equivalent to low-pressure sealing, have low sealing cost and high reliability. The number of sealing elements is also greatly reduced, which avoids high maintenance cost and is conducive to popularization and application. The sealing elements only include a control assembly sealing ring, a bearing cover sealing ring, an output shaft sealing ring and a side cover sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0052] Fig. 1 is a structural schematic view of the ship deep-sea high-pressure valve pressure compensation electric actuator with a control assembly 5 according to the application;

[0053] Figure 2 is a schematic diagram of the structure of the control assembly 5 of the pressure-compensated electric actuator of the deep-sea high-pressure valve of the ship of the present application;

[0054] Figure 3 is a partial sectional view of the pressure-compensated electric actuator of the deep-sea high-pressure valve of the ship of the present application;

[0055] Figure 4 is another partial sectional view of the pressure-compensated electric actuator of the deep-sea high-pressure valve of the ship of the present application;

[0056] Figure 5 Figure 5 is a schematic diagram of the output shaft assembly;

[0057] Figure 6 Figure 6 is a schematic diagram of the worm assembly;

[0058] Figure 7 Figure 7 is a schematic diagram of the control assembly;

[0059] Figure 8 Figure 8 is a sectional view of the control assembly;

[0060] Figure 9 Figure 9 is a schematic diagram of the bearing mounting plate 1;

[0061] Figure 10 Figure 10 is another schematic diagram of the bearing mounting plate 1;

[0062] Figure 11 Figure 11 is a schematic diagram of the side plate 1;

[0063] Figure 12 Figure 12 is another schematic diagram of the side plate 1;

[0064] Figure 13 Figure 13 is a schematic diagram of the compensation assembly;

[0065] Figure 14 Figure 14 is a schematic diagram of the leather cup;

[0066] Figure 15 Figure 15 is a schematic diagram of the leather cup cover;

[0067] Figure 16 Figure 16 is a schematic diagram of the housing 1;

[0068] Figure 17 Figure 17 is another schematic diagram of the housing 1;

[0069] Figure 18 Figure 18 is a schematic diagram of the bearing cover 1;

[0070] Figure 19 Figure 19 is a sectional view of the bearing cover 1;

[0071] Figure 20 Figure 20 is a schematic diagram of the primary double-helical gear assembly;

[0072] Figure 21 Figure 21 is a schematic diagram of the secondary double-helical gear assembly;

[0073] Figure 22 is a schematic view of a three-stage double gear assembly;

[0074] Figure 23 is a schematic view of a cable assembly;

[0075] Figure 24 is a sectional view of a plug cap;

[0076] Figure 25 is a perspective view of the plug cap. DETAILED DESCRIPTION

[0077] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the present application.

[0078] In Fig. 1, the in-plane direction is the rear direction, the out-of-plane direction is the front direction, and the up-down and left-right directions are unchanged.

[0079] In FIG. 1-4, the ship deep-sea high-pressure valve pressure compensation electric actuator of the application comprises 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 shell 10, a bearing cover 11, a first pinion 12, a first double gear assembly 13, a second double gear assembly 14, a third double gear assembly 15, a cable assembly 16, a plug 17, and the motor front-end wires are connected with the control assembly 5 through the first socket 8 and the cable assembly 16 to form a motor power supply control loop. The motor front-end wires refer to the motor three-phase and rotor position sensor lead-out wires, the three-phase wires are the lead-out wires of the motor three-phase winding, which supply power to the motor winding, and the rotor position sensor lead-out wires are the tail position sensor lead-out wires of the motor rotor, which supply power to the position sensor and feedback the rotor position signal; the motor front-end wires pass through the square wire slot (10V) at the front end of the shell. The cylindrical shell of the motor 1 is horizontally placed in the horizontal cylindrical cavity on the right lower side of the shell 10, the front-end circular mounting surface of the motor 1 is connected and fixed with the bearing mounting plate 6 through five screws, the front-end cylindrical output shaft of the motor 1 is connected and fixed with the cylindrical inner hole of the first pinion 12 through a check ring, the first pinion 12 has a circumferential tooth shape on the front and back, a right cylindrical boss on the front and back, and a flat through hole in the middle of the cylindrical boss; the left side of the first pinion 12 is engaged with the right side of the first double gear assembly 13, the left side of the first double gear assembly 13 is engaged with the right side of the second double gear assembly 14, the left side of the second double gear assembly 14 is engaged with the right side of the third double gear assembly 15, the left side of the third double gear assembly 15 is engaged with the right side of the fourth gear 4d of the worm assembly 4, and the first double gear assembly 13, the second double gear assembly 14, and the third double gear assembly 15 are horizontally placed between the bearing mounting plate 6 and the side plate 7.The right side of the intermediate worm cylindrical surface of the worm assembly 4 is engaged with the left side of the intermediate worm gear 3b cylindrical surface of the output shaft assembly 3, the worm assembly 4 is horizontally installed in the left side cylindrical cavity of the shell 10, the end of the intermediate worm of the worm assembly 4 is positioned by the bearing mounting plate 6, the output shaft assembly 3 is vertically placed between the intermediate cylindrical cavity of the shell 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 surface of the position sensor 2 is fixedly connected with the upper part of the bearing cover 11 with a circular boss 11a through four screws, the lower end surface of the position sensor 2 is fixedly connected with the upper end surface of the output shaft 3a of the output shaft assembly 3 through four screws, the position sensor 2 is connected with the control assembly 5 through the first socket 8 and the cable assembly 16 to form a position information feedback loop, the lower end cylindrical boss of the bearing cover 11 is placed in the intermediate cylindrical cavity of the shell 10 and is fixedly connected by six screws, the rear end surface of the side plate 7 is fixed on the front end surface of the shell 10 through ten screws, the front end of the compensation assembly 9 is fixed on the left side of the shell 10 through four screws, the bottom surface of the control assembly 5 is fixedly connected with the four cylindrical surfaces of the upper end of the shell 10 through four screws, the rear end surface of the bearing mounting plate 6 is fixedly connected with the rear end surface of the front waist-shaped cavity of the shell 10 through six screws, the first socket 8 is placed in the middle of the left side of the shell 10 and is fixedly connected through four screws, the first socket 8 is placed below the compensation assembly 9, the first plug at the lower end of the cable assembly 16 is fixedly connected with the first socket 8, the second plug 16b at the upper end of the cable assembly 16 is fixedly connected with the second socket 5d on the left side of the control assembly 5, the plug cap 17 is installed on the upper end cylindrical boss 10u of the left side of the waist-shaped body of the shell 10; the bearing cover 11 has a placement space in the middle for placing the position sensor 2, the lower part of the placement space has a positioning groove for positioning the second bearing 3d of the output shaft assembly, the bearing cover 11 has a circle of mounting holes on the outer ring. The fourth sealing ring 18 is placed between the bearing cover 11 and the shell 10 to seal the bearing cover 11 and the shell 10; the fifth sealing ring 19 is placed between the output shaft 3a and the shell 10 to seal the output shaft 3a and the shell 10; the sixth sealing ring 20 is placed between the side plate 7 and the shell 10 to seal the side plate 7 and the shell 10, and the fourth sealing ring 18, the fifth sealing ring 19 and the sixth sealing ring 20 form a sealing member.

[0080] Figure 5 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 on the intermediate cylindrical surface of the output shaft 3a by the screw 3e, the first bearing 3c is placed on the lower end cylindrical surface of the output shaft 3a, and the second bearing 3d is placed on the upper end cylindrical surface of the output shaft 3a.

[0081] Figure 6In the middle, the worm assembly 4 includes a worm 4a, a third bearing 4b, a fourth bearing 4c, a fourth gear 4d, a flat key 4e, a check ring 4f, the third bearing 4b is placed on the tail end of the cylindrical surface of the worm 4a, the fourth bearing 4c is placed on the front end of the cylindrical surface of the worm 4a, the fourth gear 4d is placed in front of the fourth bearing 4c, the flat key 4e is placed between the fourth gear 4d and the worm 4a, and the check ring 4f is placed in front of the fourth gear 4d.

[0082] Figure 7 、 8 In the middle, the control assembly 5 includes a control housing 5a, a control cover 5b, a controller 5c, a second socket 5d, a third socket 5e, a fourth socket 5f, a first control seal ring 5g, a second control seal ring 5h, the controller 5c is placed in the cavity of the control housing 5a and is fixed by screw connection, the control cover 5b is placed above the control housing 5a and is fixed by screw connection, the controller 5c is connected by wire between the second socket 5d, the third socket 5e and the fourth socket 5f to form a power supply and signal transmission loop, the first control seal ring 5g is placed between the horizontal contact surface of the control cover 5b and the control housing 5a, the second control seal ring 5h is placed between the vertical contact surface of the control cover 5b and the control housing 5a, the controller 5c includes a control board and a power board, the control board is installed on the power board and is connected to the power board by a row of pins, the second socket 5d is placed on the left outer wall of the control housing 5a and is fixed by screw connection, the third socket 5e is placed on the left outer wall of the control housing 5a and is fixed by screw connection, the third socket 5e is placed in front of the second socket 5d, the fourth socket 5f is placed on the left outer wall of the control housing 5a and is fixed by screw connection, and the fourth socket 5f is placed in front of the third socket 5e. The controller is composed of a control board and a power board, which avoids mutual interference, adopts an upper and lower two-layer structure design, fully utilizes the space, reduces the volume of the control assembly, and the small-volume control assembly is beneficial to the adaptability of deep-sea high-pressure environment. The small-volume control assembly deforms little under deep-sea high pressure and will not cause sealing structure failure due to deformation, ensuring the sealing reliability. Sealing failure will cause damage to the internal controller, eventually leading to valve failure and serious accidents.

[0083] Figure 9 、 10In the bearing mounting plate 6, the left side front end has a cylindrical first boss 6a, the middle of the first boss 6a has a circular groove 6b, the outside of the first boss 6a has five unevenly distributed circular holes 6c, the left side middle has a shaft hole 6e, the right side rear end has a cylindrical second boss 6d, the right side front end has a cylindrical third boss 6f, the middle of the third boss 6f has a positioning groove 6h, the right side middle has an assembly hole 6g, the right side outside has four unevenly distributed circular holes 6j, the front end middle has an avoidance slot 6k which is a square groove, the rear end middle has a cylindrical fourth boss 6q, a cylindrical fifth boss 6w, and a cylindrical sixth boss 6r, the fourth boss 6q is between the second boss 6d and the fifth boss 6w, the fifth boss 6w is on the left side of the sixth boss 6r, the fifth boss 6w and the sixth boss 6r are connected in the middle, the middle of the fourth boss 6q has a circular groove 6t, the middle of the fifth boss 6w has a circular groove 6y, the middle of the sixth boss 6r has a circular groove 6u, and the middle upper and lower sides have six circular holes 6p.

[0084] Figure 11 , 12 In the side plate 7, the waist-shaped plate 7a has ten semicircular bosses 7b on the outside, the middle of the semicircular boss 7b has a circular hole 7c, the front end middle has a waist-shaped boss 7d, the rear end middle has a waist-shaped groove 7e, the middle of the waist-shaped groove 7e has three unevenly horizontally distributed cylindrical bosses 7f, and the middle of the three cylindrical bosses 7f has a circular groove 7h.

[0085] Figures 13-15 In the compensation assembly 9, the leather cup 9a and the leather cup cover 9b are placed in the rectangular cavity of the leather cup cover 9b, the rear end of the leather cup 9a is a rectangular body, the inside of the rectangular body is a rectangular cavity, the middle of the leather cup 9a is a cylinder, the middle of the cylinder is a circular cavity, the front end of the leather cup 9a is a rhombic body, the middle of the rhombic body is a circular hole, the rectangular cavity of the rear end of the leather cup 9a is in communication with the circular cavity in the middle and the circular hole in the front end, the rear end of the leather cup cover 9b is a rectangular body, the inside of the rectangular body of the leather cup cover 9b is a rectangular cavity, the rear end of the rectangular body of the rear end of the leather cup cover 9b has a square hole, the circular holes evenly distributed in the middle of the rectangular body of the rear end of the leather cup cover 9b are in communication with the rectangular cavity, the middle of the leather cup cover 9b is a cylinder, the middle of the cylinder is a circular cavity, the front end of the leather cup cover 9b is a rhombic body, the middle of the rhombic body is a circular hole, and the rectangular cavity of the rear end of the leather cup cover 9b is in communication with the circular cavity in the middle and the circular hole in the front end.

[0086] Figure 16 , 17 ​​The shell 10 is a left side of the horizontal small cylinder 10a, the middle is a square body 10b, the right side is a horizontal large cylinder 10c, the front end is a waist-shaped body 10d, the left side cylinder 10a, the middle square body 10b, the right side cylinder 10c and the front end waist-shaped body 10d are connected integrally, the left side cylinder 10a is a horizontal cylindrical cavity 10e, the middle square body is a square cavity 10f, the right side cylinder is a horizontal cylindrical cavity 10h, the front end waist-shaped body is a waist-shaped cavity 10g, the left side cylindrical cavity 10e, the middle square cavity 10f, the right side cylindrical cavity 10h and the front end waist-shaped cavity 10g are communicated, the middle square cavity 10f is separated from the right side cylindrical cavity 10h and is not communicated, the purpose of separation is to protect the motor, avoid the control or position sensor failure to cause the worm gear to rotate beyond the limit and hit the motor to damage, the middle square body 10b has a vertical cylinder 10j, the vertical cylinder 10j has a cylindrical through hole 10k in the middle, the vertical cylinder 10j is surrounded by six evenly distributed screw holes, the cylindrical through hole 10k is communicated with the direction cavity 10f, the shell 10 has four cylindrical bosses 10q at the upper end, the cylindrical bosses 10q have threaded holes in the middle, the front end waist-shaped body 10d has ten cylindrical bodies 10w evenly distributed on the outside, the ten cylindrical bodies 10w have threaded holes in the middle, the front end waist-shaped body 10d has a rhombus body 10r on the left side, the rhombus body 10r has a cylindrical hole 10t in the middle, the cylindrical hole 10t forms a skin bowl docking port, the cylindrical hole 10t is communicated with the front end waist-shaped cavity 10g, the front end waist-shaped body 10d has a small square body 10y below the rhombus body 10r on the left side for fixedly connecting the first socket 8, the small square body 10y has a cylindrical body 10p at the front end, the small square body 10y has a cylindrical through hole 10s in the middle, the small square body 10y has threaded holes at the four corners, the cylindrical through hole 10s is communicated with the front end waist-shaped cavity 10g, the left side cylindrical body 10a has a small cylindrical body 10z on the left side, the small cylindrical body 10z has a threaded hole in the middle, the shell 10 has a vertical cylindrical boss 10x in the middle at the bottom, the cylindrical boss 10x has a circular through hole 10m in the middle, the circular through hole 10m forms a lower mounting hole, the circular through hole 10m is communicated with the square cavity 10f, the cylindrical boss 10x is surrounded by four small cylindrical bosses 10n, the small cylindrical bosses 10n have threaded holes in the middle, the waist-shaped cavity 10g has eight unevenly distributed threaded holes at the rear end for connecting and fixing the bearing mounting plate 6, the waist-shaped cavity 10g has a square wiring slot 10V at the rear end, the function of the square wiring slot is to lead the wires of the motor front end and the position sensor to the first socket, the square wiring slot 10V has a wire threading port 10i for leading the wire of the position sensor, the waist-shaped body 10d has a cylindrical boss 10u on the left side at the upper end, the cylindrical boss 10u has an oil filling hole in the middle for installing a plug cap, the oil filling hole is a threaded hole, the oil filling hole is communicated with the front end waist-shaped cavity 10g, the cylindrical boss 10u has a circular ring-shaped sealing groove at the upper end.

[0087] Figure 18 、 19In the middle, the bearing cover 11 upper part has a circular boss 11a, the circular boss 11a below has a protruding cylinder 11b, the protruding cylinder 11b has a circle of mounting holes, the protruding cylinder 11b below has a cylindrical boss 11c, the lower cylindrical boss 11c has a circular groove 11d in the middle for positioning the second bearing 3d of the output shaft assembly, the circular groove 11d above has a circular hole 11e, the circular hole 11e above has a cylindrical recess 11f, the circular hole 11e, the cylindrical recess 11f form a mounting space for the position sensor 2, the lower cylindrical boss 11c left side has a square groove 11g, the square groove has 11g right oblique inclined cylindrical hole 11h, the inclined cylindrical hole 11h and the upper cylindrical recess 11f are communicated, the lower cylindrical boss 11c below has a sector boss 11j in contact with the worm wheel for output mechanical limit, the worm wheel is a sector worm wheel; square groove and inclined cylindrical hole when convenient position sensor threading; sector boss is used for output mechanical limit, avoid the position overshoot when the output shaft rotates; cylindrical recess 11f is used for positioning the position sensor space; the circular groove 11d is for positioning the second bearing 3d of the output shaft assembly.

[0088] Figure 20 In the middle, the primary double gear assembly 13 includes a primary gear 13a, a secondary pinion 13b, a first bearing 13c, a second bearing 13d, the secondary pinion 13b is placed on the intermediate side cylindrical surface of the primary gear 13a, the first bearing 13c is placed on the front end cylindrical surface of the primary gear 13a, and the second bearing 13d is placed on the rear end cylindrical surface of the primary gear 13a.

[0089] Figure 21 In the middle, the secondary double gear assembly 14 includes a secondary gear 14a, a tertiary pinion 14b, a third bearing 14c, a fourth bearing 14d, the tertiary pinion 14b is placed on the intermediate side cylindrical surface of the secondary gear 14a, the third bearing 14c is placed on the front end cylindrical surface of the secondary gear 14a, and the fourth bearing 14d is placed on the rear end cylindrical surface of the secondary gear 14a.

[0090] Figure 22 In the middle, the tertiary double gear assembly 15 includes a tertiary gear 15a, a quaternary pinion 15b, a fifth bearing 15c, a sixth bearing 15d, the quaternary pinion 15b is placed on the intermediate side cylindrical surface of the tertiary gear 15a, the fifth bearing 15c is placed on the left side cylindrical surface of the tertiary gear 15a, and the sixth bearing 15d is placed on the right side cylindrical surface of the tertiary gear 15a.

[0091] Figure 23In the embodiment, the cable assembly 16 comprises a first plug 16a, a second plug 16b, and a vulcanized cable 16c, the first plug 16a is below the vulcanized cable 16c, the first plug 16a is connected with the vulcanized cable 16c at 90°, the second plug 16b is above the vulcanized cable 16c, the second plug 16b is connected with the vulcanized cable 16c at 90°, the first plug 16a and the second plug 16b are staggered at 90° in space, and the first plug 16a and the second plug 16b are connected in loop through the vulcanized cable 16c.

[0092] Figure 24 、 25 In the embodiment, the plug cap 17 comprises a plug 17a and a third sealing ring 17b, the upper end of the plug 17a has a cylinder, the middle of the upper end cylinder has a hexagonal groove, the lower end of the upper end cylinder has an external thread cylinder, the middle of the external thread cylinder and the upper end cylinder has an annular groove, and the third sealing ring 17b is placed in the annular groove of the plug 17a.

[0093] The use method is as follows: first, the plug cap 17 is opened, hydraulic oil is filled into the shell 10 and the inside of the cup, the hydraulic oil can enter the bearing mounting plate 6 and the side plate 7, the inside of the motor 1, the inside of the shell, the inside of the cup, the front end and the rear end of the motor have through holes, and the oil enters the inside of the motor. The through holes consider that the inside of the motor is fully filled with oil. The oil cavity is filled with oil, and the amount of oil filled is calculated based on the volume of the shell and the cup. The amount of oil of the present application is 0.9±0.2 liters. During the process of filling the hydraulic oil, the cup 9a is pressed, and the excess air is discharged through the oil filling hole. Pressing the cup helps to discharge the air in the cavity, and the deformation function of the cup is checked whether it is normal and the sealing performance of the cup. When the hydraulic oil in the shell 10 and the inside of the cup is filled, the hydraulic oil is left (the standing time is 0.5-3 days), after the standing is finished, the cup 9a is pressed, and the excess air is discharged through the oil filling hole. After the exhaust is finished, the plug cap 17 is installed and sealed on the shell 10. Then, the control assembly 5 is installed above the shell 10, the cable assembly 16 is connected with the control assembly 5 and the first socket 8, and the valve stem is connected with the output shaft 3a.

[0094] When the valve needs to be opened, the valve opening instruction is transmitted to the control assembly 5 through the third socket 5e, the control assembly 5 drives the motor 1 to work in the positive direction, the high-speed low-torque power of the motor 1 is converted into 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, the valve is opened, the position sensor 2 detects the rotation position information of the output shaft 3a and transmits the information to the control assembly 5 through the position information feedback loop, when the control assembly 5 judges that the rotation position information of the output shaft 3a is in the valve opening state, the motor power supply control loop controls the motor to be powered off; during the process of diving from the sea surface to the external environment, the external seawater pressure increases, the seawater pressure is transmitted to the leather cup 9a, the volume of the internal oil decreases during the process of increasing the pressure, the leather cup 9a deforms inward, the internal volume of the leather cup 9a decreases, the volume of the compensation oil decreases, so that the pressure difference between the inside and outside is kept at a small value, the shell and the sealing element are equivalent to low-pressure sealing, the sealing cost is low, and the reliability is high.

[0095] When the valve needs to be closed, the valve closing instruction is transmitted to the control assembly 5 through the third socket 5e, the control assembly 5 drives the motor 1 to work in the reverse direction, the high-speed low-torque power of the motor 1 is converted into 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, the valve is closed, the position sensor 2 detects the rotation position information of the output shaft 3a and transmits the information to the control assembly 5 through the position information feedback loop, when the control assembly 5 judges that the rotation position information of the output shaft 3a is in the valve closing state, the motor power supply control loop controls the motor to be powered off; during the process of rising from the deep sea to the sea surface, the external seawater pressure decreases, the seawater pressure reduction change is transmitted to 9a, the volume of the internal oil increases during the process of reducing the pressure, the leather cup 9a deforms outward, the internal volume of the leather cup 9a increases, the volume of the compensation oil increases, so that the pressure difference between the inside and outside is kept at a small value.

[0096] The specific embodiments of the application described above do not constitute a limitation on the protection scope of the application. Any various other corresponding changes and modifications made according to the technical concept of the application should be included in the protection scope of the claims of the application.

Claims

1. A pressure compensated electric actuator for deep sea high pressure valves of naval vessels, characterized in that: The application relates to a multi-stage gear transmission device, which comprises a shell (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 gear (4d) and a multi-stage double gear assembly arranged between the first-stage pinion (12) and the fourth-stage gear (4d); the vertically-arranged output shaft assembly (3) is arranged in the middle part; the motor (1) is horizontally arranged on one side of the output shaft assembly (3); and the worm assembly (4) is horizontally arranged on the other side of the output shaft assembly (3). The inner cavity of the shell (10) is divided into a first accommodating cavity and a second accommodating cavity by a bearing mounting plate (6); the first accommodating cavity comprises a motor accommodating cavity for accommodating the motor (1); the first accommodating cavity outside the motor accommodating cavity accommodates the worm assembly (4) and the output shaft assembly (3); the second accommodating cavity accommodates the multi-stage double gear assembly in the middle part; the output shaft of the motor (1) extending into the second accommodating cavity on one side of the multi-stage double gear assembly is fixedly connected with the first-stage pinion (12); the worm assembly (4) comprises a worm (4a); the end of the worm (4a) extending into the second accommodating cavity on the other side of the multi-stage double gear assembly is fixedly connected with the fourth-stage gear (4d); the first-stage pinion (12), the multi-stage double gear assembly and the fourth-stage gear (4d) are sequentially engaged to form a transmission assembly; the output shaft assembly (3) comprises an output shaft (3a) for being connected with a valve rod of a valve and a worm gear (3b) for being engaged with the worm (4a); the worm gear (3b) is fixedly arranged on the cylindrical surface of the output shaft (3a); the upper part of the shell (10) corresponding to the second accommodating cavity is provided with an oil filling hole; the oil filling hole is detachably connected with a plug cap (17); the side part of the shell (10) corresponding to the second accommodating cavity is provided with a leather cup butt joint; the upper part of the shell (10) corresponding to the first accommodating cavity is provided with an upper mounting hole corresponding to the output shaft (3a); a position sensor (2) is connected to the output shaft (3a); a bearing cover (11) for positioning the upper end of the output shaft (3a) is arranged at the upper mounting hole; a lower mounting hole for mounting the lower end of the output shaft (3a) is arranged at the lower part of the shell (10); the compensation assembly (9) is arranged outside the shell (10); the compensation assembly (9) comprises a leather cup (9a) and a leather cup cover (9b) covering the leather cup (9a); the leather cup (9a) is provided with a cup mouth at one end; the inner cavity of the leather cup (9a) is communicated with the second accommodating cavity through the cup mouth and the leather cup butt joint; sealing elements are arranged between the bearing cover (11) and the shell (10), between the output shaft (3a) and the shell (10) and between the side plate (7) and the shell (10). ​ 2. The deep-sea high-pressure valve pressure compensation electric actuator for warships according to claim 1, characterized in that: The surface of the leather cup cover (9b) is provided with a plurality of through holes; and the shape of the leather cup cover (9b) is matched with the shape of the leather cup; 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); and the third-stage double gear assembly (15) is in transmission connection with the worm (4a) through the fourth-stage gear (4d). The fourth sealing ring (18) is arranged between the bearing cover (11) and the shell (10) to seal the bearing cover (11) and the shell (10); the fifth sealing ring (19) is arranged between the output shaft (3a) and the shell (10) to seal the output shaft (3a) and the shell (10); and the sixth sealing ring (20) is arranged between the side plate (7) and the shell (10) to seal the side plate (7) and the shell (10), and the fourth sealing ring (18), the fifth sealing ring (19) and the sixth sealing ring (20) form a sealing member.

3. The deep-sea high-pressure valve pressure compensation electric actuator for warships according to claim 1, characterized in that: The worm gear is a fan-shaped worm gear, and the lower end of the bearing cover (11) has a fan-shaped boss in contact with the fan-shaped worm gear for outputting mechanical limiting.

4. The deep-sea high-pressure valve pressure compensation electric actuator for ships according to claim 1, characterized in that: The control assembly (5) is further arranged above the shell (10) and includes a control shell (5a), a control cover (5b) and a controller (5c), wherein the controller (5c) is arranged in the control shell (5a), the control cover (5b) is sealingly connected to the control shell (5a), and the side surface of the control shell (5a) is integrated with a second socket (5d), a third socket (5e) and a fourth socket (5f); the controller (5c) is connected with the second socket (5d), the third socket (5e) and the fourth socket (5f) through wires to form a power supply and signal transmission loop; The side surface of the shell (10) has a first socket (8) connected with the position sensor (2), the front end of the motor is connected with the control assembly (5) through the shell (10), the first socket (8) and a cable assembly (16) to form a motor power supply control loop; and the position sensor (2) is connected with the control assembly (5) through the first socket (8) and the cable assembly (16) to form a position information feedback loop.

5. The method of using the pressure compensated electric actuator for deep sea high pressure valve of ships as claimed in claim 4, wherein: The cap (17) is opened, and hydraulic oil is filled into the shell (10) and the leather cup; during the hydraulic oil filling process, the leather cup (9a) is pressed, and excess air is discharged through the oil filling hole; when the hydraulic oil in the shell (10) and the leather cup is filled, the hydraulic oil is left to stand, after the standing is completed, the leather cup (9a) is pressed, and excess air is discharged through the oil filling hole; after the air discharge is completed, the cap (17) is sealingly mounted on the shell (10); the valve stem is connected with the output shaft (3a); When the valve needs to be opened, the driving motor (1) is driven to work in the forward direction, the high-speed and low-torque power of the motor (1) is converted into low-speed and 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 (3a) to open the valve; When the valve needs to be closed, the driving motor (1) is driven to work in the reverse direction, the high-speed and low-torque power of the motor (1) is converted into low-speed and 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.

6. The method of using a deep-sea high-pressure valve pressure-compensated electric actuator for a ship according to claim 5, characterized in that: When the valve needs to be opened, the valve opening instruction is transmitted to the control assembly (5) through the third socket (5e), the control assembly (5) drives the motor (1) to work in the positive direction, the high-speed low-torque power of the 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 (3a), so that the valve is opened. The position sensor (2) detects the rotation position information of the output shaft (3a) and transmits it to the control assembly (5) through the position information feedback loop. When the control assembly (5) judges that the rotation position information of the output shaft (3a) is in the valve opening state, the motor power supply control loop controls the motor to be powered off; during the process of diving from the sea surface to the external environment, the external seawater pressure increases, the seawater pressure is transmitted to the leather cup (9a), the volume of the internal oil decreases during the pressure increase process, the leather cup (9a) deforms inward, the internal volume of the leather cup (9a) decreases, the volume of the compensation oil decreases, so that the pressure difference between the inside and outside is kept at a small value, and the shell and the sealing element are equivalent to low-pressure sealing; when the valve needs to be closed, the valve closing instruction is transmitted to the control assembly (5) through the third socket (5e), the control assembly (5) drives the motor (1) to work in the reverse direction, the high-speed low-torque power of the 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, so that the valve is closed. The position sensor (2) detects the rotation position information of the output shaft (3a) and transmits it to the control assembly (5) through the position information feedback loop. When the control assembly (5) judges that the rotation position information of the output shaft (3a) is in the valve closing state, the motor power supply control loop controls the motor to be powered off; during the process of rising from the deep sea to the sea surface, the external seawater pressure decreases, the seawater pressure reduction change is transmitted to the leather cup (9a), the volume of the internal oil increases during the pressure reduction process, the leather cup (9a) deforms outward, the internal volume of the leather cup (9a) increases, the volume of the compensation oil increases, and the pressure difference between the inside and outside is also kept at a small value.

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