CN207975256U - PODDED PROPULSOR stern sealing device - Google Patents

Abstract

The utility model is related to a kind of PODDED PROPULSOR stern sealing devices, installation end face between the stationary ring shell and propeller supporting shaft holder of static components is equipped with O shape rubber seal, and it is bolted to connection, it is sealed by two rotary shafts lippacking radial rotary between the stationary ring shell of static components and the rotating ring shell of moving ring assembly, it is evenly arranged helical spring between the stationary ring shell and stationary ring of static components, stationary ring is pressed on the rotating ring of moving ring assembly by helical spring, stationary ring shell is equipped with O shape rubber seal in the radial direction with stationary ring, installation end face between the rotating ring shell and propeller of moving ring assembly is equipped with O shape rubber seal, and it is bolted to connection；Rotating ring shell inner hole and the propeller shaft of moving ring assembly are gap-matched, and O shape rubber seal is installed, the rotating ring shell of moving ring assembly is equipped with O shape rubber seal in the radial direction with rotating ring, prevents peripheral seawater from leaking into stern sealing inside by radial clearance.

Description

PODDED PROPULSOR stern sealing device

Technical field

The utility model is related to a kind of ship PODDED PROPULSOR, especially a kind of stern for PODDED PROPULSOR seals dress It sets.

Background technology

PODDED PROPULSOR is a kind of novel ship electric propulsion system developed in recent years, it is designed in propulsion device On use the structure type of pod propulsion, i.e., propeller driving motor is placed in the gondolas of 360 ° of revolutions of an energy and is suspended on ship Under, integrate propulsion device and steering gear, traditional Propulsion Systems and helm gear is eliminated, to substantially increase Ship Design, construction and the flexibility used.Gondola is usually made of davit and propulsion die, and wherein propulsion die includes spiral shell again Revolve paddle, sealing device, propeller shaft, electric machine casing, motor etc..In order to ensure that motor reliability service, motor room are not allow for sea Water leaks, even if occurring to should ensure that motor room can be discharged in the seawater of leakage in time if seawater leakage in special circumstances, is unlikely to Influence the normal operation of motor, it is therefore desirable to which the sealing between sealing device especially electric machine casing and extraneous seawater carries out special Different consideration.The stern shaft seal of traditional spacing paddle, tuning for Controllable Pitch Propeller in order to prevent external dynamic sea by main shaft Ji Zhou Grains perforations enter Generally use end face seal or packing seal in cabin, both seal form structure sizes are big and all easy to wear cause seawater Leakage, reliability is not high, therefore is not suitable as compact-sized PODDED PROPULSOR underwater sealing device.In order to meet underwater electricity The space of machine and seal request, while the propulsive performance of entire PODDED PROPULSOR is not interfered with again, there is an urgent need to one kind to be suitable for PODDED PROPULSOR, and with high reliability, water lubrication, the stern sealing device from drainage function.

Invention content

The utility model is to provide for a kind of PODDED PROPULSOR stern sealing device, for preventing seawater to PODDED PROPULSOR Motor room leakage, ensure propeller driving motor reliability service；It is leaked in special circumstances in case of seawater, ensures leakage Seawater can be discharged in time, not influence the normal operation of propeller driving motor；Extend making for PODDED PROPULSOR stern sealing device With the service life, maintenance work is reduced；Reduce pollution of the PODDED PROPULSOR to marine environment.

To achieve the above object, the technical solution of the utility model is：A kind of PODDED PROPULSOR stern sealing device, including Static components, moving ring assembly, dynamic and static ring connection component, between the stationary ring shell and propeller supporting shaft holder of the static components Installation end face be equipped with O shape rubber seal, and be bolted to connection, end face be installed for preventing surrounding seawater from passing through Into motor cabin；Pass through two rotary shaft lips between the stationary ring shell of the static components and the rotating ring shell of moving ring assembly Shape seal radial rotatory sealing, and rotating ring shell of the lip of two rotary shaft lippackings towards moving ring assembly, two Separated by lantern ring between a rotary shaft lippacking and is positioned, rotary shaft lippacking outer end circlip pressure Tightly；There are two lubricating grease channels for processing on stationary ring shell, and two lubricating grease channels are respectively communicated with two rotary shaft lip packing Lithium-base grease is transported at the lip of rotary shaft lippacking, the oil inlet of lubricating grease channel by part by lubricating grease channel O shape rubber seal is installed at mouthful, prevents lubricating grease from leaking out；Between the stationary ring shell and stationary ring of the static components Stationary ring is pressed on the rotating ring of moving ring assembly by even arrangement helical spring by helical spring, stationary ring shell and stationary ring radial direction side O shape rubber seal is installed upwards, prevents peripheral seawater from leaking into stern sealing inside by radial clearance；The rotating ring group Installation end face between the rotating ring shell and propeller of part is equipped with O shape rubber seal, and is bolted to connection；Rotating ring Rotating ring shell inner hole and the propeller shaft of component are gap-matched, and are equipped with O shape rubber seal, peripheral extra large to preventing Water leaks into motor cabin；The rotating ring shell of the moving ring assembly is equipped with O shape rubber seal in the radial direction with rotating ring, prevents Only peripheral seawater leaks into stern sealing inside by radial clearance.

Drain passage there are two processing on the stationary ring shell can after mechanical seal failure seawater leaks into gas chamber To be discharged by drain passage, O shape rubber seal is installed in drain passage exit.

It is connected with positioning screw between the stationary ring and stationary ring shell, friction torque is resisted by positioning screw, positions spiral shell Elastic material is wrapped up in nail head outer surface, avoids damaging stationary ring when impact.

It is connected with positioning screw between the rotating ring and rotating ring shell, friction torque is resisted by positioning pin, outside positioning pin Elastic material is wrapped up on surface, avoids damaging rotating ring when impact.

Rubber pad is installed between the rotating ring shell and rotating ring of the moving ring assembly, plays buffer protection function.

The dynamic and static ring connection component includes a connecting bracket, two attachment screws；It is installed to and hangs in stern sealing device Before on the propeller of cabin, the static components are fixed together with moving ring assembly by dynamic and static ring connection component, after installation is complete, Remove connecting bracket.

The utility model has the beneficial effects that:

Since the form stern sealing device has mechanical seal and twice lip packing, and using in compressed air holding Portion's pressure, therefore PODDED PROPULSOR can effectively prevent seawater to be leaked to motor room using the stern sealing device of the form, ensure spiral shell The reliability service of paddle driving motor is revolved, while reducing pollution of the PODDED PROPULSOR to marine environment.

Description of the drawings

Fig. 1 is the end view of stern sealing device;

Fig. 2 is the overall structure sectional view of stern sealing device;

Fig. 3 is in Fig. 1 along the partial sectional view in the directions A-A;

Fig. 4 is in Fig. 1 along the partial sectional view in the directions B-B;

Fig. 5 is in Fig. 1 along the partial sectional view in the directions C-C.

In figure, 1. static components, 1a. stationary ring shells, the channels 1a1~1a4., 1aa. stationary ring shells installation end face, 1ab. stationary ring shell external cylindrical surfaces, 1b. O shape rubber seal, 1c. rotary shaft lippackings, 1d. lantern rings, 1e. Circlip, 1f. O shape rubber seal, 1g. stationary rings, 1g2d. stationary rings and rotating ring contact surface, 1h. positioning screws, 1i. spiral shells Revolve spring, 1j. O shape rubber seal, 2. moving ring assemblies, 2a. rotating ring shells, 2aa. rotating ring shells installation end face, 2ab. Rotating ring shell inner hole, 2b~2c. O shape rubber seal, 2d. rotating rings, 2e. positioning pins, 2f. rubber pads, 2g. O shape rubber Sealing ring, 3. dynamic and static ring connection components, 3a. connecting brackets, 3b. attachment screws, 4~5. bolts, the bearing of 6. propellers Bearing block, 7. propellers, 8. propeller shafts, 9. hanging rings.

Specific implementation mode

The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.

As shown in Figures 1 to 5, a kind of PODDED PROPULSOR stern sealing device, including static components 1, a moving ring assembly 2, dynamic and static ring connection component 3.It includes a connecting bracket 3a, two attachment screw 3b that every group of dynamic and static ring, which connects 3 components,.Stern seals Device relies on dynamic and static ring connection component 3 to fix static components 1 and moving ring assembly 2 before being installed on PODDED PROPULSOR, installs At rear release attachment screw 3b, connecting bracket 3a is removed.

The stationary ring shell 1a of static components 1 passes through bolt 4 and propeller supporting shaft holder 6（See the dotted line in Fig. 2）Connection. There are O shape rubber seal 1b on stationary ring shell 1a installations end face 1aa, prevents surrounding seawater from entering motor by installing end face 1aa Cabin.It plays the role of positioning when external cylindrical surface 1ab is installed on stationary ring shell 1a.Static components 1 include that two rotary shaft lips are close The lip of sealing 1c should usually select the preferable rubber of heat resistance, such as fluorubber, silicon rubber towards moving ring assembly 2, material, Hardness requirement reaches 65~75（Shore A）, separate positioning, lippacking 1c by lantern ring 1d between two lippacking 1c Outer end is compressed by circlip 1e.In order to avoid leakage, lip packing 1c does not carry out lip using traditional lubricating oil Lubrication, but the Lithium-base grease of water-tolerant is used to be lubricated lip, it is logical that lubricating grease is machined on stationary ring shell 1a Lithium-base grease is transported at the lip of lippacking 1c by road 1a1,1a2, in the lubricating grease channel of installation end face 1aa O shape rubber seal 1f is mounted at 1a1,1a2 mouthfuls prevents lubricating grease from leaking out.Stationary ring 1g material selections wearability is good Silicon carbide resists friction torque by positioning screw 1h, and positioning screw 1h head exterior surfaces wrap up elastic material, when avoiding impact Damage stationary ring 1g.It is evenly arranged helical spring 1i between stationary ring shell 1a and stationary ring 1g, is pressed stationary ring 1g by helical spring 1i It is tightened on rotating ring 2d.Stationary ring shell 1a and stationary ring 1g is equipped with O shape rubber seal 1j in the radial direction, prevents peripheral seawater logical It crosses radial clearance and leaks into stern sealing inside.

The rotating ring shell 2a of moving ring assembly 2 passes through bolt 5 and propeller 7（See Fig. 2, dotted line）Connection.Rotating ring shell 2a peaces O shapes rubber seal 2b, rotating ring shell inner hole 2ab and propeller shaft 8 are installed on dress end face 2aa（See Fig. 2, dotted line）Between Gap coordinates, and is equipped with O shape rubber seal 2c, this O shapes rubber seal at two, which all plays, prevents peripheral seawater from leaking Into the effect in motor cabin.The good silicon carbide of rotating ring 2d material selections wearability resists friction torque by positioning pin 2e, fixed Elastic material is wrapped up in the position outer surfaces pin 2e, avoids damaging rotating ring 2d when impact.Rubber is installed between rotating ring shell 2a and rotating ring 2d 2f is padded, buffer protection function is played.Rotating ring shell 2a and rotating ring 2d is equipped with O shape rubber seal 2g in the radial direction, prevents outer It encloses seawater and stern sealing inside is leaked by radial clearance.

Stationary ring 1g and rotating ring 2d contact surfaces 1g2d is lubricated by seawater, is played the role of mechanical seal, is prevented periphery Seawater leaks into inner plenum.Compressed air in motor room passes through propeller supporting shaft holder 6, lippacking 1c lips Into air inlet chamber, gas room pressure is made to be higher by 0.2bar or so than peripheral seawater pressure.There are two excretions for processing on stationary ring shell 1a Channel 1a3,1a4, since channel 1a4 is identical with channel 1a3 structures, not display channel 1a4 in Fig. 5 works as machinery Seal failure seawater can pass through drain passage 1a3,1a4 discharge after leaking into gas chamber, in the drain passage of installation end face 1aa O shape rubber seal 1f is mounted at 1a3,1a4 mouthfuls.The effect of hanging ring 9 is used for lifting stern sealing device when being installation.

The stern sealing device of the form integrally uses stainless steel, when installing stern sealing device first in O shape rubber Smearing moderate lubrication fat on sealing ring 1b, 1f, 2b, 2c, the uniform coating lubricating oil on stationary ring shell 1a external cylindrical surfaces 1ab, so Stern sealing is slid on propeller shaft 8 with hand afterwards, in order to avoid damage O shape rubber seal 2c, when the peace of stationary ring shell 1a After dress end face 1aa is contacted with propeller supporting shaft holder 6, installation bolt 4 is symmetrically tightened, and make locking processing.Propeller is installed And position of the propeller on propeller shaft is adjusted, ensure stern stationary seal ring shell 1a mounting surfaces 1aa and the 2a installations of rotating ring shell Range error symmetrically tightens installation bolt 5 within ± 1mm between the 2aa of face, and makees locking processing.It works in PODDED PROPULSOR It utilizes compressed air system to seal the clean compressed air for providing certain pressure to stern in the process, makes stern blanket gas room pressure ratio Peripheral seawater pressure is higher by 0.2bar or so；It is provided at regular intervals to twice lippacking 1c using centralized lubricating system A certain amount of extreme pressure lithium base lubricating grease ensures lippacking 1c service lifes.Leakage sea is not had in normal condition lower chamber Water, if stationary ring 1g and the failure of rotating ring 2d mechanical sealing surfaces, leaking into the seawater of gas chamber can be under the action of compressed air It is discharged to the hull bilge by drain passage 1a3,1a4 on stationary ring shell and pipeline, ensures that PODDED PROPULSOR motor can be just Often operation.

Claims (6)

1. a kind of PODDED PROPULSOR stern sealing device, including static components, moving ring assembly, dynamic and static ring connection component, feature It is：Installation end face between the stationary ring shell and propeller supporting shaft holder of the static components is equipped with O shape rubber seals Circle, and be bolted to connection, for preventing surrounding seawater from entering motor cabin by installing end face；The static components It is sealed by two rotary shafts lippacking radial rotary between stationary ring shell and the rotating ring shell of moving ring assembly, and two Rotating ring shell of the lip of rotary shaft lippacking towards moving ring assembly passes through between two rotary shaft lippackings Lantern ring separates positioning, and rotary shaft is compressed with lippacking outer end with circlip；There are two lubricating grease for processing on stationary ring shell Channel, two lubricating grease channels are respectively communicated with two rotary shaft lippackings, by lubricating grease channel by Lithium-base grease It is transported at the lip of rotary shaft lippacking, O shape rubber seal is installed at the oil inlet of lubricating grease channel, prevents from moistening Consistent lubricant leaks out；It is evenly arranged helical spring between the stationary ring shell and stationary ring of the static components, it will by helical spring Stationary ring is pressed on the rotating ring of moving ring assembly, and stationary ring shell is equipped with O shape rubber seal in the radial direction with stationary ring, is prevented outer It encloses seawater and stern sealing inside is leaked by radial clearance；Installation between the rotating ring shell and propeller of the moving ring assembly End face is equipped with O shape rubber seal, and is bolted to connection；Rotating ring shell inner hole and the propeller shaft of moving ring assembly are adopted With clearance fit, and O shape rubber seal is installed, prevents peripheral seawater from leaking into motor cabin；The moving ring assembly Rotating ring shell and rotating ring O shape rubber seal is housed in the radial direction, prevent peripheral seawater from being leaked by radial clearance Stern sealing is internal.

2. PODDED PROPULSOR according to claim 1 stern sealing device, it is characterised in that：It is processed on the stationary ring shell There are two drain passages can pass through drain passage and be discharged after mechanical seal failure seawater leaks into gas chamber, logical in excretion Road exit is equipped with O shape rubber seal.

3. PODDED PROPULSOR according to claim 1 stern sealing device, it is characterised in that：The stationary ring and stationary ring shell Between be connected with positioning screw, by positioning screw resist friction torque, positioning screw head exterior surface wrap up elastic material, keep away Exempt to damage stationary ring when impact.

4. PODDED PROPULSOR according to claim 1 stern sealing device, it is characterised in that：The rotating ring and rotating ring shell Between be connected with positioning screw, pass through positioning pin resist friction torque, positioning pin outer surface wrap up elastic material, avoid impact when Damage rotating ring.

5. PODDED PROPULSOR according to claim 1 stern sealing device, it is characterised in that：The rotating ring of the moving ring assembly Rubber pad is installed between shell and rotating ring, plays buffer protection function.

6. PODDED PROPULSOR according to claim 1 stern sealing device, it is characterised in that：The dynamic and static ring connection component Including a connecting bracket, two attachment screws；Before stern sealing device is installed on PODDED PROPULSOR, the static components It is fixed together by dynamic and static ring connection component with moving ring assembly, after installation is complete, removes connecting bracket.