CN213982014U

CN213982014U - Rudder sealing device

Info

Publication number: CN213982014U
Application number: CN202022952513.6U
Authority: CN
Inventors: 刘占伟; 张燕; 朱仕红
Original assignee: Shanghai Beihao Shipbuilding Technology Co ltd
Current assignee: Shanghai Beihao Shipbuilding Technology Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-17
Anticipated expiration: 2030-12-08

Abstract

The utility model discloses a steering sealing device, which comprises a mounting plate and a sealing seat, wherein the upper surface of the mounting plate is provided with a plurality of holes leading into a sealing cavity, the lower surface of the mounting plate is provided with mounting holes, the sealing seat is also provided with mounting holes, the sealing seat is fixedly connected with the mounting plate through the mounting holes by bolts, a sealing component is arranged between the sealing seat and the mounting plate and comprises an O-shaped ring I, a spacer ring, a rotary seal and a packing seal, the O-shaped ring I is arranged between the sealing seat and the mounting plate, the sealing seat is also provided with a plurality of holes leading into the sealing cavity, the hole depth of the sealing cavity is matched with the spacer ring and the rotary seal, the utility model improves the original structure to increase oil holes, realizes lubrication and cleaning, the self-protection of the internal garbage deposition, and adjusts the thickness of gaskets to adjust different contact areas, the service life of the rotary seal is prolonged.

Description

Rudder sealing device

Technical Field

The utility model belongs to the technical field of marine seal, specifically a helm steering sealing device.

Background

With the demand of China on ocean development, a large number of full-rotation propellers are applied to various ships, the full-rotation propellers can provide accurate forward, backward and steering power for the ships, and the performance of the full-rotation propellers determines the overall performance of the ships, such as flexibility, controllability, stability, reliability and the like. With the continuous increase of the demand of international trade, ocean transportation and military fields on ships, the high-power full-rotation propeller is further put into the market, the requirement of vast users on the reliability of the ships is higher and higher, one of the requirements is the sealing problem of the ships, and the problem is highly valued by more and more relevant experts. The marine oil leakage sealing device has certain requirements on the reliability of the ship, and the problem that the marine environment pollution is directly influenced by the oil leakage caused by sealing is also listed as a common concern in international convention.

Generally, the rudder seals are installed close to the maximum waterline of the entire ship, and the use environment is complicated, such as: the rotation speed of the rotary rudder is low, so that impurities are easily drawn into the periphery of the rotary rudder seal to slowly erode the rotary seal. On the other hand, the steering sealing structure is greatly influenced by the full-slewing bearing and is not suitable for processing and assembling. Because the long-term wearing and tearing of inside slewing bearing rotation, the iron fillings that produce are washed to the lubricating oil, then keep away from the center through the centrifugal force of helm, finally deposit near helm seal, further worsen helm seal's internal environment, therefore how to avoid the emergence of these problems to become the focus of our design gathering during the design, through improving original structural design, in order to avoid the emergence of these problems, through a large amount of experiments and actual use experience. We have designed a set of reliable steering seal: firstly, can regularly wash lubricated gyration seal contact lip, inside can also retrieve rubbish and carry out self-protection. And secondly, the thickness of the adjusting pad is reduced for multiple times to improve the contact surface of the rotary seal, so that the service life of the seal is further prolonged. The maintenance cost of the ship is greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealing device steers, and the device realizes sealed washing lubricating function, inside recovery rubbish through improving original sealing device structure of steering and carries out oneself protect function and increase of service life function. The traditional structure of the steering sealing device is not changed, the functions are realized only by further improving the original structure, and the manufacturing cost of the steering sealing device is not increased, so that the problems in the background art are solved.

In order to achieve the above object, the utility model provides a following technical scheme:

a steering sealing device comprises a mounting plate, a bolt, an O-shaped ring I, a sealing seat, a spacer ring, a rotary seal, a packing seal, a sealing shaft sleeve, an O-shaped ring II, an adjusting pad, a steering tube and a gland, wherein a plurality of holes communicated with a sealing cavity are formed in the upper surface of the mounting plate;

a sealing assembly is arranged between the sealing seat and the mounting plate, the sealing assembly comprises an O-shaped ring I, a spacer ring, a rotary seal and a packing seal, the O-shaped ring I is arranged between the sealing seat and the mounting plate, the sealing seat is also provided with a plurality of holes entering into a sealing cavity, the hole depth of the sealing cavity is matched with the spacer ring and the rotary seal, the spacer ring and the rotary seal are arranged in the vertical direction at intervals, a gland is arranged on the sealing seat, and the gland is arranged above the spacer ring;

the packing seal is arranged at the lower end of the seal seat, and one side of the packing seal is abutted against the seal shaft sleeve;

the sealing shaft sleeve is arranged between the sealing seat and the steering pipe, and an O-shaped ring II is arranged between the sealing shaft sleeve and the steering pipe.

As a further aspect of the present invention: the number of the holes for leading the mounting plate and the sealing seat into the sealing cavity is four, and every two holes are oppositely arranged on the mounting plate and the sealing seat in an angle of 180 degrees.

As a further aspect of the present invention: the bottom of the sealing shaft sleeve is provided with an adjusting pad which is fixed on the outer side edge of the steering tube.

As a further aspect of the present invention: the adjusting pad is an arc block with equal size, and the arc block is fixed on the steering tube through a bolt.

As a further aspect of the present invention: the rotary seal is provided with three channels.

As a further aspect of the present invention: a garbage storage area is formed in the upper end of the inner side of the sealing shaft sleeve, and the upper end of the garbage storage area is connected with a gear box oil tank.

As a further aspect of the present invention: one end of the mounting plate, which is led into the hole of the sealed chamber, is connected with the liquid storage tank above the garbage storage area through a sleeve.

As a further aspect of the present invention: the end of the mounting 1 opening into the sealed chamber is connected to the reservoir above the waste storage area by a sleeve 12.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model improves the original structure to increase the oil hole, realizes lubrication and cleaning, ensures the self-protection of the internal garbage deposition, adjusts different contact areas by adjusting the thickness of the gasket, and prolongs the service life of the rotary seal;

2. packing seals are added to protect the rotary seals and prolong the service life of the rotary seals;

3. the utility model discloses a helm steering sealing device improves the incremental cost less on original basis, starts from long-distance interests, has reduced the maintenance rate, has practiced thrift use cost greatly.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a perspective view of a rudder sealing device.

Fig. 2 is a front view of a rudder seal device.

Fig. 3 is a half sectional view of B-B in fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

In the figure: 1. mounting a plate; 2. a bolt; 3. a first O-shaped ring; 4. a sealing seat; 5. a spacer ring; 6. rotating and sealing; 7. packing sealing; 8. sealing the shaft sleeve; 9. an O-shaped ring II; 10. an adjustment pad; 11. steering tube rotation; 12. A sleeve; 13. and (7) pressing the cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-4, in the embodiment of the present invention, a sealing device for steering, including mounting panel 1, bolt 2, O-ring 3, seal receptacle 4, spacer ring 5, rotary seal 6, packing seal 7, seal shaft sleeve 8, O-ring two 9, adjusting pad 10, steering pipe 11 and gland 13, a plurality of hole that lets in sealed cavity is seted up to mounting panel 1's upper surface, the mounting hole has been seted up to mounting panel 1's lower surface, the mounting hole has also been seted up on seal receptacle 4, pass through bolt 2 fixed connection through the mounting hole between seal receptacle 4 and the mounting panel 1, make seal receptacle 4 and mounting panel 1's dismouting more convenient.

Be provided with seal assembly between seal receptacle 4 and the mounting panel 1, seal assembly includes that O type circle 3, spacer ring 5, rotary seal 6 and packing are sealed 7, O type circle 3 sets up between seal receptacle 4 and mounting panel 1, can prevent through O type circle 3 that the sea water from entering into the propeller inside, prevent simultaneously that lubricating oil from leaking outside the hull, pollute the sea water, this seal assembly can install in advance when the installation, wholly install again, avoid the installation mistake to cause the unnecessary loss, if will change the sealed assembly of helm when the ship carries out overhaul simultaneously, wholly dismantle, it is convenient simple.

Also seted up the hole that a plurality of entered into sealed cavity on seal receptacle 4, this sealed cavity's bore depth degree and spacer ring 5 and rotary seal 6 looks adaptation, spacer ring 5 sets up with rotary seal 6 at vertical direction is last at the same time, be provided with gland 13 on seal receptacle 4, gland 13 sets up the top at spacer ring 5, packing seal 7 sets up the lower extreme at seal receptacle 4, and one side and the sealed axle sleeve 8 of packing seal 7 offset, can filter the pollutant of big granule when sealing the sea water through packing seal 7, prevents to enter into sealed cavity.

Sealing shaft sleeve 8 sets up between seal receptacle 4 and helm steering pipe 11, be provided with two 9 of O type circle between sealing shaft sleeve 8 and the helm steering pipe 11, can prevent through two 9 of O type circle that the sea water carries out the propeller inside, prevent simultaneously that lubricating oil from leaking in the sea, pollute the environment, helm steering pipe 11 and sealing shaft sleeve 8 carry out 360 gyrations under helm steering device's drive to form helm steering sealing system.

The number of the holes for leading the mounting plate 1 and the sealing seat 4 into the sealing cavity is four, each two holes are oppositely arranged on the mounting plate 1 and the sealing seat 4 at 180 degrees to form two sets of completely independent cavities, and the sealing lubricating oil enters the sealing cavity through the holes to work and then returns to the opposite square end to form a cycle, so that the service life of the seal is prolonged;

simultaneously, the mounting plate 1 and the sealing seat 4 have another effect of leading in holes of the sealing cavity, and a large amount of fine garbage remained in the sealing cavity after long-term operation is periodically injected with certain pressure oil through an external three-way pipeline to wash the rotating sealing cavity, so that the service life of the rotary seal 6 is prolonged.

The bottom of the sealing shaft sleeve 8 is provided with an adjusting pad 10, the adjusting pad 10 is fixed on the outer side edge of the steering tube 11, the adjusting pad 10 is an arc block with equal size, the arc block is fixed on the steering tube 11 through a bolt, the adjusting pad 10 is arranged at the bottom of the sealing shaft sleeve 8 to change the axial position of the rotary seal 6 on the sealing sleeve 8, and the service life of the whole sealing device is prolonged;

meanwhile, in the long-term rotating process, the gap between the sealing shaft sleeve 8 and the rotary seal 6 is gradually enlarged, the sealing effect is influenced, the axial installation position of the sealing shaft sleeve 8 can be adjusted by reducing the thickness of the adjusting pad 10, the original lip contact part is avoided, and the sealing effect is improved under the condition that the seal rotary seal 6 is not required to be replaced.

The rotary seal 6 is provided with three, each rotary seal 6 is independently connected into the sealed oil tank, oil in the sealed oil tank is periodically analyzed and judged to judge whether to change the seal, meanwhile, the rotary seal is externally connected with an oil tank device gas, and a gas pressure device is carried out according to the draft of a ship body in emergency.

The inboard upper end position of sealed axle sleeve 8 has seted up the rubbish storage area, and the gear box oil tank is connected to the upper end in rubbish storage area, through the inside wearing and tearing because mechanical motion of rubbish storage area to the gear box oil tank, perhaps collects because the impurity that other reasons formed, improves rotary seal 6's life.

The end of the mounting plate 1, which opens into the hole of the sealed chamber, is connected with the reservoir above the waste storage area by a sleeve 12.

The working principle is as follows: when the steering pipe 11 rotates, the sealing shaft sleeve 8 rotates together, the mounting plate 1, the sealing seat 4, the spacer ring 5 and the rotary seal 6 are fixed and unchanged, so that relative rotation is formed on the outer surface of the sealing shaft sleeve 8, the outer side of the sealing seat 4 is wrapped outside a ship by seawater, the upper surface of the mounting plate 1 is in a cabin, lubricating oil B is lubricating oil inside a propeller, small metal iron chips generated by mechanical movement inside the propeller rotate along the inner wall of a shell under the action of centrifugal force along with the rotation of the steering pipe 11, and finally the small metal iron chips slowly precipitate in a garbage storage area, the lubricating oil A is injected into each lip of the seal through an oil hole to be completely lubricated, and certain pressure oil is injected through the oil hole to clean the lip of the rotary seal 6 regularly;

if there is a slight leakage beyond a certain amount of clearance between the seal housing 8 and the rotary seal 6, the thickness of the adjustment pad 10 can be reduced to further improve their contact area;

the sealing device is integrally installed, the rudder pipe 11 and other components are not influenced to be dismantled, time is saved, and maintenance cost is saved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A steering sealing device is characterized by comprising a mounting plate (1), a bolt (2), a first O-shaped ring (3), a sealing seat (4), a spacer ring (5), a rotary seal (6), a packing seal (7), a sealing shaft sleeve (8), a second O-shaped ring (9), an adjusting pad (10), a steering pipe (11) and a gland (13), wherein the upper surface of the mounting plate (1) is provided with a plurality of holes communicated with a sealing cavity, the lower surface of the mounting plate (1) is provided with mounting holes, the sealing seat (4) is also provided with mounting holes, and the sealing seat (4) is fixedly connected with the mounting plate (1) through the mounting holes through the bolt (2);

a sealing assembly is arranged between the sealing seat (4) and the mounting plate (1), the sealing assembly comprises a first O-shaped ring (3), a spacer ring (5), a rotary seal (6) and a packing seal (7), the first O-shaped ring (3) is arranged between the sealing seat (4) and the mounting plate (1), a plurality of holes entering a sealing cavity are also formed in the sealing seat (4), the depth of the holes of the sealing cavity is matched with that of the spacer ring (5) and the rotary seal (6), the spacer ring (5) and the rotary seal (6) are arranged in the vertical direction at intervals, a gland (13) is arranged on the sealing seat (4), and the gland (13) is arranged above the spacer ring (5);

the packing seal (7) is arranged at the lower end of the seal seat (4), and one side of the packing seal (7) is abutted against the seal shaft sleeve (8);

the sealing shaft sleeve (8) is arranged between the sealing seat (4) and the steering tube (11), and an O-shaped ring II (9) is arranged between the sealing shaft sleeve (8) and the steering tube (11).

2. A rudder seal according to claim 1 characterised in that the number of apertures into the seal chamber between the mounting plate (1) and the seal housing (4) is four and each two apertures are 180 ° opposite each other on the mounting plate (1) and the seal housing (4).

3. Rudder sealing arrangement according to claim 1, characterized in that the bottom of the sealing bush (8) is provided with an adjusting pad (10), which adjusting pad (10) is fixed on the outer side edge of the rudder pipe (11).

4. A rudder seal according to claim 3 characterised in that the adjustment pads (10) are equally sized arcs which are bolted to the rudder trunk (11).

5. Rudder sealing device according to claim 1, characterized in that the rotary seal (6) is provided with three passages.

6. The rudder sealing device according to claim 1, wherein a garbage storage area is formed at the upper end of the inner side of the sealing shaft sleeve (8), and the upper end of the garbage storage area is connected with a gearbox oil tank.

7. A rudder seal according to claim 1 characterised in that the end of the mounting plate (1) opening into the aperture of the seal chamber is connected to the reservoir above the waste storage area by a sleeve (12).