CN105501421A - Oil seal underwater propeller - Google Patents

Abstract

The invention provides an oil-sealed underwater thruster, belonging to the field of underwater thrusters, including a thruster, a compensator, and an oil pipe, a head cover, a fixing sleeve for the oil pipe of the thruster, a casing, an oil seal gland, and an oil seal outer retaining ring , output shaft, propeller, sacrificial anode, shroud, shroud support rod, skeleton oil seal, reducer, motor, piston cylinder, piston cylinder seat, compensator oil pipe fixing sleeve, oil pipe plug and oil bag, the said The propeller and the compensator are connected through the oil pipe, and the head cover, the casing, the oil seal gland, the oil seal outer retaining ring and the output shaft are connected in sequence, and cooperate with the skeleton oil seal to form the propeller sealing body. The casing is fixedly connected, and the propeller and sacrificial anode are installed on the output shaft. The beneficial effects of the invention are: it can improve the propeller wear problem, improve the reliability of the sealing structure, reduce the thickness of the propeller shell, solve the heat dissipation problem of the motor, and avoid the loss of torque transmission.

Description

An oil-sealed underwater propeller

technical field

The invention relates to the field of underwater thrusters, in particular to an oil-sealed underwater thruster.

Background technique

The propeller is the power source of the underwater machine. There are many problems in the existing underwater propeller. Firstly, in order to increase its reliability in deep water, the thickness of its shell is often increased, which makes the propeller extremely heavy; secondly, the traditional The structural reliability of the O-ring seal arranged on the reducer shaft is low, and the loss of the reducer is large; then the magnetic coupling mechanism can solve the wear problem, but the technology is not yet mature, and the output torque loss is large; finally, the underwater propeller motor often needs to be overloaded Working The traditional sealing structure will confine the heat generated by the motor inside the propeller, causing the motor to overheat and affect the performance of the motor, thereby reducing the efficiency of the entire propeller.

Contents of the invention

The invention provides an oil-sealed underwater propeller, which can improve the propeller wear problem, improve the reliability of the sealing structure, reduce the thickness of the propeller shell, solve the heat dissipation problem of the motor at the same time, and avoid the loss of torque transmission, thereby improving the performance of the entire propeller. performance.

In order to solve the above technical problems, the embodiment of the present application provides an oil-sealed underwater propeller, including a propeller and a compensator, and is characterized in that it also includes an oil pipe, a head cover, a propeller oil pipe fixing sleeve, a casing, and an oil seal gland , oil seal outer retaining ring, output shaft, propeller, sacrificial anode, shroud, shroud support rod, skeleton oil seal, reducer, motor, piston cylinder, piston cylinder seat, compensator oil pipe fixing sleeve, oil pipe plug and oil The propeller and the compensator are connected through the oil pipe, the head cover, the casing, the oil seal gland, the oil seal outer retaining ring, and the output shaft are connected in sequence, and cooperate with the skeleton type oil seal to form the propeller sealing body. The inside of the casing is equipped with The motor and the shroud are fixedly connected to the shell through the shroud support rod, and the propeller and sacrificial anode are installed on the output shaft.

As a preferred embodiment of this solution, the head cover is designed with a special structure for connecting the oil pipe, which is matched with the propeller oil pipe fixing sleeve.

As a preferred embodiment of this solution, a protrusion with a groove is designed on the outer wall of the rear end of the housing.

As a preferred embodiment of this solution, the front end of the output shaft is a hollow cylinder, the inner diameter is matched with the shaft of the reducer, the outer diameter is matched with the skeleton oil seal, and the rear end is a solid shaft.

As a preferred embodiment of this solution, the piston cylinder and the piston cylinder seat are separated by an oil bag, the piston cylinder communicates with the outside world, and the piston cylinder seat adopts an oil seal.

As a preferred embodiment of this solution, the sacrificial anode is hemispherical and made of aluminum-magnesium alloy.

As a preferred embodiment of this solution, the front end of the propeller hub is hollow.

As a preferred embodiment of this solution, at least two compensator oil pipe plugs are installed on the piston cylinder seat to cooperate with the compensator oil pipe fixing sleeve.

One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

It can improve the propeller wear problem, improve the reliability of the sealing structure, reduce the thickness of the propeller shell, solve the heat dissipation problem of the motor at the same time, avoid the loss of torque transmission, and improve the performance of the whole propeller; the design principle is simple, the structure is novel, and the design process High reliability can be achieved without complicated strength analysis.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic diagram of the connection structure of the propeller and the compensator in the embodiment of the present application;

Fig. 2 is a schematic diagram of the propeller structure;

Figure 3 is a schematic diagram of the structure of the compensator.

In Fig. 1-Fig. 3, 1. propeller, 2. oil pipe, 3. compensator, 4. head cover, 5. propeller oil pipe fixing sleeve, 6. shell, 7. oil seal gland, 8. oil seal outer stop Circle, 9, output shaft, 10, propeller, 11, sacrificial anode, 12, shroud, 13, shroud support rod, 14, skeleton type oil seal, 15, reducer, 16, motor, 17, piston cylinder, 18, piston cylinder seat, 19, compensator oil pipe fixed sleeve, 20, oil pipe plug, 21, oil bag.

detailed description

The invention provides an oil-sealed underwater propeller, which can improve the propeller wear problem, improve the reliability of the sealing structure, reduce the thickness of the propeller shell, solve the heat dissipation problem of the motor at the same time, and avoid the loss of torque transmission, thereby improving the performance of the entire propeller. performance.

In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

As shown in Figures 1-3, an oil-sealed underwater propeller includes a propeller 1, a compensator 3, and also includes an oil pipe 2, a head cover 4, a propeller oil pipe fixing sleeve 5, a casing 6, and an oil seal gland 7 , oil seal outer retaining ring 8, output shaft 9, propeller 10, sacrificial anode 11, shroud 12, shroud support rod 13, skeleton oil seal 14, reducer 15, motor 16, piston cylinder 17, piston cylinder seat 18 , compensator oil pipe fixing sleeve 19, oil pipe plug 20 and oil bag 21, the propeller 1 and the compensator (3) are connected through the oil pipe 2, the head cover 4, the shell 6, the oil seal gland 7, the oil seal outer retaining ring 8. The output shaft 9 is connected in sequence and cooperates with the skeleton type oil seal 14 to form a propeller sealing body. The inside of the housing 6 is provided with a motor 16. The shroud 12 is fixedly connected with the housing 6 through the shroud support rod 13. The propeller 10, sacrificial The anode 11 is mounted on the output shaft 9 .

Wherein, in practical application, the head cover 4 is designed with a special structure for connecting oil pipes, and cooperates with the propeller oil pipe fixing sleeve 5 to realize a sealed connection with the propeller oil pipes.

Wherein, in practical application, the outer wall of the rear end of the housing 6 is designed with a grooved protrusion, which can effectively position the shroud 12 to ensure that the shroud 12 and the outer shell 6 have a higher relationship. coaxiality.

Wherein, in actual application, the front end of the output shaft 9 is a hollow cylinder, the inner diameter is matched with the shaft of the reducer 15, the outer diameter is matched with the skeleton oil seal 14, the rear end is a solid shaft, and the output shaft 9 is subjected to surface quenching treatment. The skeleton type oil seal 14 only causes wear on the outer wall of the output shaft 9, and will not damage the shaft of the reducer 15, which greatly reduces maintenance costs. The solid shaft part at the rear end is used to connect with the propeller 10.

Wherein, in actual application, the piston cylinder 17 and the piston cylinder seat 18 are separated by an oil bag 21, the piston cylinder 17 communicates with the outside world, the piston cylinder seat 18 adopts an oil seal, and the oil bag 21 with a specially customized shape serves as The device that feels the change of water pressure is used as a seal between the piston cylinder 17 and the piston cylinder seat 18 again, which ensures that external water cannot enter the piston cylinder seat 18 and mix with oil.

Wherein, in actual application, the sacrificial anode 11 is hemispherical, using an aluminum-magnesium alloy material, and adopting a hemispherical shape as the hub cap of the propeller 10 will not affect its performance, and the aluminum-magnesium alloy is more active than the aluminum alloy. It can protect aluminum alloy parts in seawater.

Wherein, in practical application, the front end of the hub of the propeller 10 is hollow, and the output shaft 9 extends into the hollow part, so that the moment of inertia of the propeller 10 is reduced, and the overall length of the propeller is reduced.

Wherein, in practical application, the piston cylinder seat 18 is equipped with at least two compensator oil pipe plugs 20, which cooperate with the compensator oil pipe fixing sleeve 19, and are used to fill the interior of the compensator 3 with oil before working.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present invention, according to the present invention Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence still belong to the scope of the technical solutions of the present invention.

Claims (8)

1. An oil-sealed underwater propeller, comprising a propeller (1), a compensator (3), characterized in that it also includes an oil pipe (2), a head cover (4), a propeller oil pipe fixing sleeve (5), Shell (6), oil seal gland (7), oil seal outer retaining ring (8), output shaft (9), propeller (10), sacrificial anode (11), shroud (12), shroud support rod ( 13), skeleton type oil seal (14), reducer (15), motor (16), piston cylinder (17), piston cylinder seat (18), compensator oil pipe fixing sleeve (19), oil pipe plug (20) and oil capsule (21), the propeller (1) and the compensator (3) are connected through the oil pipe (2), the head cover (4), the shell (6), the oil seal gland (7), the oil seal outer retaining ring ( 8), the output shaft (9) is connected in sequence, and cooperates with the skeleton oil seal (14) to form the propeller sealing body. The motor (16) is arranged inside the casing (6), and the shroud (12) passes through the shroud support rod (13) is fixedly connected with the casing (6), and the propeller (10) and sacrificial anode (11) are installed on the output shaft (9). 2. An oil-sealed underwater propeller according to claim 1, characterized in that, the head cover (4) is designed with a special structure for connecting oil pipes, and cooperates with the propeller oil pipe fixing sleeve (5). 3. The oil-sealed underwater propeller according to claim 1, characterized in that, a protrusion with a groove is designed on the outer wall of the tail end of the casing (6). 4. An oil-sealed underwater propeller according to claim 1, characterized in that the front end of the output shaft (9) is a hollow cylinder, the inner diameter matches the shaft of the reducer (15), and the outer diameter matches the skeleton type Oil seal (14) cooperates, and the rear end is a solid shaft. 5. An oil-sealed underwater propeller according to claim 1, characterized in that the piston cylinder (17) is separated from the piston cylinder seat (18) by an oil bag (21), and the piston cylinder ( 17) It communicates with the outside world, and the piston cylinder seat (18) adopts an oil seal. 6. The oil-sealed underwater propeller according to claim 1, characterized in that, the sacrificial anode (11) is hemispherical and made of aluminum-magnesium alloy. 7. The oil-sealed underwater propeller according to claim 1, characterized in that the front end of the hub of the propeller (10) is hollow. 8. An oil-sealed underwater propeller according to claim 1, characterized in that the piston cylinder seat (18) is equipped with at least two compensator oil pipe plugs (20), and the compensator oil pipe fixing sleeve (19 )Cooperate.