CN2623973Y

CN2623973Y - Sealing device for stern tube of sand prevention split type submarine

Info

Publication number: CN2623973Y
Application number: CN 01263311
Authority: CN
Inventors: 许良弼; 仇正南; 王生龙; 曹海建
Original assignee: Dongtai Marine Fittings Co ltd
Current assignee: Dongtai Marine Fittings Co ltd
Priority date: 2001-10-17
Filing date: 2001-10-17
Publication date: 2004-07-07
Anticipated expiration: 2011-10-17

Abstract

The utility model is a sand protecting split shape submarine screw shaft sealing device used in submarines which are positioned under water within three hundred meters. The appearance takes a shape of midheaven column. The structure is serially composed of five parts, that are, a sand protecting leather cup, an accessory seal, a shell seal, a mechanical seal and a feeding emergency seal. With an independent arrangement structure, the sand protecting leather cup is not connected with the other four parts. After being arranged on the screw shaft, sticking the inside diameter of the leather cup with the screw shaft to achieve the function of sand protecting by utilizing the character of the inside diameter of the leather cup is less than the diameter of the stern shaft. In other four parts, one end of the shell seal is mechanically connected with the accessory seal; the other end is mechanically connected with the feeding emergency seal; the mechanical main seal is arranged inside the shell, with a position between the accessory seal and the feeding emergency seal. The air tire of the accessory seal and the mechanical main seal in the submarine screw shaft sealing device takes a split shape which is convenient for replacement in condition that the submarine stern shaft is not drew out.

Description

Sand prevention split type submarine stern tube shaft tube sealing device

Affiliated technical field

It is stern tube shaft pipe bow seal equipment that the utility model relates to the submarine axle, especially can use under water the sealing of 300 meters limit depths with the stern tube shaft pipe on the interior submarine.

Background technique

At present, the stern tube shaft tube sealing device that China submarine uses generally still continues to use five, sixties device form made in CCCP or self-control.Its structure is normally combined by a mechanical seal, attached sealing (rubber trigonometric form seal ring) and packing box seal (packing_seal), just seal wherein a kind of pattern as China's 33 type submarines, but these submarine stern tube shaft tube sealing devices in use exist the no sand prevention structure of deficiency (1) of one of following situation; (2) not taking out stern tube shaft (take out axle be about to stern tube shaft extract hull out from the stern pipe) in attached trigonometric form rubber seal or the integral rubber pneumatic tyre of being sealed into, submarine maintenance can't change; (3) rotating ring in the mechanical primary seal is a whole hard alloy, processing difficulties, and stationary ring is whole, is difficult for changing; (4) emergent sealing of no filler or filler are met an urgent need and are sealed into single manually operated type seal form.Can't the remote emergency sealing under submarine machinery primary seal damaged condition or submarine sealing when leaking in a large number, personnel are difficult near manually sealing of device.

Summary of the invention

The utility model purpose provides a kind ofly can use under water 300 meters with interior (can use under water 300 meters to be through designing and calculating, and test through test-bed to prove), and the sand prevention structure is arranged; In use can not take out tailing axle and change the rubber pneumatic tyre; The easy manufacturing of rotating ring in the machinery primary seal, stationary ring is easily changed; The emergent sealing of filler can be the novel submarines stern tube shaft tube sealing device (hereinafter to be referred as seal arrangement) of manual and the dual-purpose sand prevention split type of remote electronic control.

The technological scheme that its technical problem that solves the utility model adopts is: in the submarine stern tube seal system, it is sand prevention leather cup part that one sand prevention structure is set, this part does not link to each other with the device other parts, be independent assembling structure, by ring leather cup pedestal, the mechanical composition of leather cup gland double team J type leather cup, after after leather cup is partly assembled, being inserted in tailing axle by J type leather cup internal diameter less than the part of tailing axle diameter and tailing axle by subsides, can play dustproof effect.Rubber pneumatic tyre in the attached sealing of device is arranged to two semicircle shape structures, can when changing, take out tail like this and just can change pneumatic tyre.Be provided with emergent filler part simultaneously, emergent filler is connected with mechanical clamp ring mode of connection and mechanical primary seal, emergent filler part-structure is combined by ring spacer ring, filler, filler pressing, big pinion assemblies, oil hydraulic motor and sealing pedestal (common elements) machinery, when the mechanical primary seal in the sand prevention split type submarine stern tube seal system breaks down, can be by manually pulling small gear or electricity consumption primer fluid pressure motor, drive big pinion assemblies structure, compress filler, reach the effect of sealing.

The beneficial effects of the utility model are, can be normal in service and when breaking down at device, can sand prevention, and change pneumatic tyre and start emergent filler and seal.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Accompanying drawing is the vertical semi-section tectonic maps of sand prevention split type submarine end shaft sealed set.

Form for seeing the each several part part easily clearly among the figure, carried out branch's labeling form, 1-1 leather cup pedestal among the figure, 1-2 leather cup, 1-3 leather cup gland, 1-4 bolt; 2-1 pneumatic tyre seat, 2-2 half garden rubber pneumatic tyre, 2-3 compressed air joint, 2-4 pad, 2-5 pneumatic tyre gland, 2-6O type rubber ring; The 3-1 stud bolt, 3-2 shell, 3-3 cooling water intake pipe joint, 3-4 clamp ring, 3-5 bolt, 3-6 nut; The 4-1 screw, the 4-2 ring washer, the 4-3 key pin, the 4-4 key, the 4-5 bearing, the 4-6 beam, the 4-7 rotating ring supports, 4-8 rotating ring circle, the 4-9 bolt, the 4-10 stationary ring, the 4-11 seal end plate, 4-12 pushing sleeve seat, 4-13 spring guide finger, the 4-14 spring, 4-15 seals pedestal; The 5-1 nut, 5-2 lubricating oil inlet connector tube, 5-3 spacer ring, 5-4 filler, 5-5 double-screw bolt, 5-6 Gland, 5-7 garden shape nut, 5-8 small gear, 5-9 gearwheel, 5-10 gear trim ring, 5-11 oil hydraulic motor.

Embodiment

In the accompanying drawing, sand prevention split type submarine end shaft sealed set, outward appearance is a hollow garden Cylindrical object, forms to be followed successively by sand prevention leather cup, attached sealing, housing seal, end face machinery primary seal, the emergent sealing of filler from left side structure.

The sand prevention leather cup partly is independent assembling structure, be assembled into successively by leather cup pedestal (1-1), leather cup (1-2), leather cup gland (1-3), wherein leather cup (1-2) is a J pattern sample, internal diameter size is less than the tailing axle diameter, the sand prevention leather cup is behind the suit tailing axle, and (1-4) is mechanically anchored on the hull wall by bolt, because leather cup is less than the part of tailing axle diameter and the part of tailing axle diameter, with tailing axle by pasting, reach dustproof effect.

In the attached hermetic unit, being installed into two semicircle rubber pneumatic tyres (2-2) in pneumatic tyre seat (2-1) is pressed on pneumatic tyre on the hull with pneumatic tyre (2-2) with stud bolt (3-1) (stud bolt is the common elements of attached sealing and housing seal) by pad (2-4) and pneumatic tyre gland (2-5) again, for guaranteeing the abundant expansion of pneumatic tyre (2-2), on the pneumatic tyre seat, be provided with gas-entered passageway, and by two cover compression pneumatic fittings (2-3), connect a pneumatic fitting on each half garden shape pneumatic tyre passage, realize being connected of attached sealing and external inflation mechanism.O type rubber ring (2-6) is as attached sealing and obturator between housing seal is connected.Pneumatic tyre in the attached sealing (2-2) is owing to be designed to two semicircle pneumatic tyres, merging the back becomes a full circle shape pneumatic tyre (title split type) after pneumatic tyre wears out or damages, tailing axle was not extracted out under the hull situation after submarine lay up, unclamp pneumatic tyre gland (2-5), and after making the pneumatic tyre gland move a segment distance along tailing axle direction (being in the annexed drawings) in hull to right with parts such as housing seals, take out impaired two semicircle pneumatic tyres with instrument, again with the new pneumatic tyre of two semicircles, ride on the tailing axle respectively, after closing up into a circular pneumatic tyre, in the cavity of propulsive gas placenta (2-1), compress the pneumatic tyre gland more left, just carried out at the following pneumatic tyre of not taking out a situation and changed.

The housing seal part, by cylinder-like shell (3-2), two Semicircular clamp rings (3-4) have been formed the sealing protection integral body of hollow shape, an end is carried out with attached sealing by stud bolt (3-1) and is connected in the housing seal, the other end is connected with packing seal by clamp ring (3-4), and bolt (3-5), nut (3-6) have guaranteed the mechanical grip between two part-annular clamp rings (3-4).The cooling water intake pipe joint is the jointing of housing seal and extraneous pressure cooling water.

Machinery primary seal part is made up of rotating ring branch and stationary ring branch.Rotating ring supports (4-7) in the rotating ring branch, the process combination that rotating ring circle (4-8) is inlayed by heat becomes rotating ring, rotating ring and screw (4-1), back-up ring (4-2), beam (4-6) machinery are assembled into rotating ring branch, key pin (4-3) is fixed in the pre-designed tailing axle keyway, guarantees the location of rotating ring branch on tailing axle; Stationary ring in the stationary ring branch (4-10) is the split type form of two part-annulars, by bolt (4-9), be fixed on the pushing sleeve seat (4-12) after seal end plate (4-11) assembling, again with spring guide finger (4-13), spring (4-14), sealing pedestal (4-15) assembles into stationary ring branch, when stationary ring wearing and tearing or damage, unclamp bolt (4-9) along diameter of axle direction, taking off two semi-circular stationary rings (4-10) (refers to here device clamp ring (3-4) unclamped and takes off, make stationary ring branch and emergent filler part along under the situation of figure after right moves a fragment position), with new two semi-circular stationary rings behind a synthetic circular stationary ring on the axle, be installed on the pushing sleeve seat (4-12), compress seal end plate (4-11), and same bolt (4-9) fixing after, just finished at the stationary ring of not taking out under the situation and changed.The machinery primary seal is in housing seal inside in seal arrangement, the position between attached sealing and the emergent sealing of filler.

Filler branch in the emergent sealing of filler is by the sealing pedestal (4-15) in the common elements machinery primary seal, constitute with spacer ring (5-3), filler (5-4), and Gland (5-6), round nut (5-7), (six) small gears (5-8), gearwheel (5-9), gear trim ring (5-10), oil hydraulic motor (5-11) assembling each other connect, be assembled into one by driving oil hydraulic motor, drive small gear, small gear drives the gear transmission structure branch of gearwheel, wherein Gland (5-6) links together with gearwheel (5-9), but does not rotate with gearwheel.(six roots of sensation) double-screw bolt (5-5) end is screwed on the sealing pedestal (4-15), and solid mutually by nut (5-1), and the other end is spun in the screw hole at small gear center, and gear transmission structure branch and filler branch are connected into the emergent hermetic unit of filler.

When mechanical primary seal in case of emergency breaks down; do not allow again to shut down; the inflation maintenance; when the ship secondary water pours in; at this moment by automatically controlled mode primer fluid pressure motor; drive gearwheel by the small gear on the oil hydraulic motor main shaft, gearwheel drives 6 small gears again, and the small gear center is a tapped hole; be spun on the double-screw bolt (5-5); when the large gear turn the small gear forward rotation, small gear advances along double-screw bolt simultaneously, drives Gland; compress filler; make gap smaller between filler and the tailing axle, stop secondary water to enter in the cabin, realize emergent sealing along tailing axle.The positive revertive control of electric controller can be used the Gland adjustment to compress or unclamp, and reaches preferable emergent sealing effect.It is general to go into amount at swelling, personnel are good when the seal arrangement, at this moment the hexagon head that milled out of available dedicated instrument rotation pinion top again carries out the emergent sealing of filler, and lubricating oil inlet connector tube (5-2) is used for lubricating oil and enters spacer ring and reduce friction between filler and tailing axle.

According to the Figure of description structural representation, in use, the sand prevention leather cup is fixed on the submarine stern pipe, be fixed in attached sealing on the submarine hull earlier then, the keyway position of reserving during again by the former design of submarine stern tube shaft installs the rotating ring part of mechanical primary seal, shell (3-2) is installed then, cover upper seal support body portion, first-class clamp ring and clamp ring bolt nut (3-4,3-5,3-6) filler is installed, spacer ring (5-4,5-3), connect other part of filler pressing section, the oil hydraulic motor line is picked out to the control room, connect each pipe joint at last, just can implement the utility model.

Claims

1, the sand prevention split type submarine stern tube shaft tube sealing device of a kind of 300 meters degree of depth under water to use on the interior submarine, outward appearance is the hollow cylindrical body, the structure composition is followed successively by: sand prevention leather cup, attached sealing, housing seal, end face machinery primary seal, 5 parts of the emergent sealing of filler is characterized in that:

The sand prevention leather cup partly is characterized in that: the sand prevention leather cup does not link to each other with other 4 part, for independent assembling structure, is assembled by ring leather cup pedestal, leather cup gland double team J type leather cup machinery;

Attached hermetic unit is characterized in that: be assembled by ring pneumatic tyre seat, pneumatic tyre gland, two semicircle rubber pneumatic tyres, machineries;

Housing seal partly is characterized in that: by cylinder-like shell, two semi-circular clamp ring machinery Assemblies; Wherein housing seal one end is linked to each other with attached sealing machine by stud bolt; The other end is linked to each other by the emergent sealing machine of clamp ring and filler;

The machinery primary seal partly is characterized in that: mechanical primary seal partly is made up of stationary ring part and rotating ring, and wherein the stationary ring part assemblies (common elements that the sealing pedestal in the stationary ring part is mechanical primary seal and the emergent sealing of filler) by circular stationary ring, seal end plate, pushing sleeve, spring, spring guide finger, sealing pedestal machinery; The rotating ring part is assemblied by circular back-up ring, key pin, key, bearing, rotating ring support, rotating ring machinery; Be in housing seal inside after the assembling of machinery primary seal part machinery, position between attached sealing and the emergent part of filler.

The emergent hermetic unit of filler is characterized in that: combined by ring spacer ring, filler, filler pressing, big pinion assemblies, oil hydraulic motor and sealing pedestal (common elements) machinery.

2, sand prevention split type submarine stern tube shaft tube sealing device according to claim 1, it is characterized in that: the rubber pneumatic tyre in the attached hermetic unit is circular, and is split type structure.

3, sand prevention split type submarine stern tube shaft tube sealing device according to claim 1, it is characterized in that: the rotating ring in the mechanical primary seal is inlayed with circular cemented carbide rotating ring circle by the support of toroidal stainless steel rotating ring and is formed, stationary ring is circular, and is split type structure.