CN110816798A - Shaft sealing device for water jet propulsion unit - Google Patents
Shaft sealing device for water jet propulsion unit Download PDFInfo
- Publication number
- CN110816798A CN110816798A CN201911146388.5A CN201911146388A CN110816798A CN 110816798 A CN110816798 A CN 110816798A CN 201911146388 A CN201911146388 A CN 201911146388A CN 110816798 A CN110816798 A CN 110816798A
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- CN
- China
- Prior art keywords
- ring
- gland
- seat
- static
- ring seat
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a shaft sealing device for a water jet propulsion device, which comprises: axle, left gland, right gland, pneumatic tyre sealing mechanism, oil blanket mechanism, a plurality of spring, quiet ring holder, quiet ring, rotating ring holder and rotating ring, pneumatic tyre sealing mechanism includes: air seal circle and clamping ring, oil blanket mechanism includes: the shaft sealing device comprises a driving ring, a baffle and an oil seal, wherein the static ring is installed on a static ring seat through a plurality of first pins and first pin sleeves, a static ring sealing ring pressing plate is arranged on the outer side of the static ring, the rotating ring is installed on a rotating ring seat through a plurality of second pins and second pin sleeves, a rotating ring sealing ring pressing plate is arranged on the outer side of the rotating ring, the static ring seat is installed on a right pressing cover through a plurality of third pins and third pin sleeves, a plurality of spring accommodating grooves are formed in the right pressing cover, a plurality of spring guide pins are arranged on one side of the static ring seat, and the spring sleeves are arranged on the spring guide pins and are accommodated in the spring accommodating grooves of the right pressing cover, so that the service life of the shaft sealing device is greatly prolonged.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of mechanical sealing, in particular to a shaft sealing device for a water jet propulsion device.
[ background of the invention ]
The water jet propeller is a propeller in which a jet part of a propulsion mechanism is immersed in water and a reaction force generated by the jet water flow is used to drive a ship to move forward. The water jet propeller is composed of a water pump, a pipeline, a suction port, a nozzle and the like, can change the jet direction of water flow through the nozzle to realize the operation of a ship, has lower efficiency than a propeller, but has good operation performance, and particularly has good adaptability to a shallow water channel with a sediment bottom.
The water jet propulsion device needs to use a shaft sealing mechanism, and the quality of the sealing performance of the shaft sealing mechanism directly determines the quality of the water jet propulsion device.
[ summary of the invention ]
In order to solve the above technical problems, an object of the present invention is to provide a shaft sealing device for a water jet propulsion device, which has a simple structure and is easy to install.
The technical scheme adopted by the invention is as follows: a shaft seal for a waterjet propulsion device, comprising: axle, left gland, right gland, pneumatic tyre sealing mechanism, oil blanket mechanism, a plurality of spring, quiet ring seat, quiet ring, rotating ring seat and rotating ring, be connected through the first mounting of a plurality of between left side gland and the right gland, pneumatic tyre sealing mechanism includes: air seal circle and clamping ring, oil blanket mechanism includes: the driving ring is fixedly connected with the shaft, the baffle is fixedly connected with the left gland, and the oil seal is arranged between the driving ring and the baffle, the static ring is arranged on the static ring seat through a plurality of first pins and first pin sleeves, the outer side of the static ring is provided with a static ring sealing ring pressing plate which is abutted against the static ring seat, the dynamic ring seat is fixedly connected with the shaft, the dynamic ring is arranged on the dynamic ring seat through a plurality of second pins and second pin sleeves, the outer side of the dynamic ring is provided with a dynamic ring sealing ring pressing plate which is abutted against the dynamic ring seat, the static ring seat is arranged on the right gland through a plurality of third pins and third pin sleeves, a plurality of spring accommodating grooves are arranged in the right gland, a plurality of spring guide pins are arranged on one side of the static ring seat, the spring is sleeved on the spring guide pins and accommodated in the spring accommodating grooves of the right gland, one end of the spring is abutted against the right gland, and the other end of the spring is abutted against the static ring seat, the static ring seat is connected with the static ring sealing ring pressing plate through a plurality of second fixing pieces, and the moving ring seat is connected with the moving ring sealing ring pressing plate through a plurality of third fixing pieces.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: the pneumatic tire sealing mechanism is arranged in the left gland, the pneumatic sealing ring is wrapped on the outer side of the compression ring, a first inflation channel is arranged in the compression ring, and a second inflation channel communicated with the first inflation channel is arranged in the left gland.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: the movable ring seat is connected with the shaft through a first clamping sleeve and a first set screw, and the driving ring is connected with the shaft through a second clamping sleeve and a second set screw.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: and one side of the right gland is provided with an installation sheet which is fixedly connected with the right gland through a fourth fixing piece.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: and a dustproof sleeve is arranged on the outer side of the right gland.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: be equipped with rotating ring seat O type circle between rotating ring seat and the axle, between rotating ring and the rotating ring seat be equipped with rotating ring O type circle between rotating ring and the rotating ring seal ring clamp plate respectively, between quiet ring and the quiet ring seat, between quiet ring and the quiet ring seal ring clamp plate be equipped with quiet ring O type circle between quiet ring and the right gland respectively, be equipped with quiet ring seat O type circle between quiet ring seat and the right gland, be equipped with right gland O type circle between baffle and the right gland.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: the dynamic ring is made of pressureless sintered silicon carbide materials, the hardness of the dynamic ring is HRA95, the static ring is made of reaction sintered silicon carbide materials, and the hardness of the static ring is HRA 90.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: and a washing liquid channel which can reach the friction surface of the static ring and the moving ring is arranged in the right gland.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: the first pin sleeve, the second pin sleeve and the third pin sleeve are all made of flexible materials.
Preferably, a shaft sealing device for a water jet propulsion device in the present invention is further provided with: and the right gland is provided with an adjusting screw and a nut which are matched with the left gland.
Compared with the prior art, the invention has the following beneficial effects:
1. the static compensation element sealing structure adopts a multi-spring static compensation element structure, the design form of multiple springs can meet the requirement that a large-shaft-diameter seal bears uniform compression load, the seal has larger axial compensation capacity by matching with the guide pin, and the static compensation element sealing structure has the advantages that the springs do not rotate along with the shaft, the following performance is good, and the better fit of the ring surface under the high-speed condition is ensured. In addition, when the installation deviation appears, quiet ring can automatically regulated, can not cause sealed inefficacy and life-span influence because of the deviation of straightness that hangs down etc..
2. The movable ring and the stationary ring adopt the effect of transmitting torque by the cylindrical pin, and the flexible pin bush is assembled on the cylindrical pin to play a role in buffering, so that the phenomenon that the sealing ring is cracked due to rigid contact between the pin and the hole as the host computer is just started to generate overlarge torque can be greatly avoided.
3. The movable ring and the static ring are in an integral ring structure form, are not easy to break and are not easy to deform when the end faces are subjected to high pressure.
4. The driving ring, the movable ring seat and the shaft are all provided with a jacket type transmission device, the transmission structure is stable and reliable, and pits or scratches and the like caused by direct contact of screws and the shaft can be avoided.
5. The right gland is provided with the washing liquid channel which can reach the friction surface of the static ring and the moving ring, so that the friction surface can be washed and cooled, and the service life is prolonged.
6. According to the invention, the air tire sealing mechanism is arranged on the seawater side, so that when the mechanical seal fails or is maintained, the air tire seal can be filled with air, the air tire and the shaft are tightly held, the seawater is isolated outside the cabin, the seawater is prevented from flowing into the cabin during maintenance, and the mechanical seal is convenient to disassemble and maintain.
[ description of the drawings ]
Fig. 1 is a schematic structural view of a shaft seal device for a water jet propulsion system according to the present invention.
In fig. 1: 1. a shaft, 10, a first clamping sleeve, 11, a first set screw, 12, a second clamping sleeve, 13, a second set screw, 2, a left gland, 20, a second inflation channel, 3, a right gland, 30, a mounting plate, 31, a dust cover, 32, a flushing fluid channel, 33, an adjustment screw, 34, a nut, 35, a right gland pin hole, 36, a spring receiving groove, 37, a right gland O-ring, 4, a pneumatic tire sealing mechanism, 40, a gas sealing ring, 41, a pressure ring, 410, a first inflation channel, 5, an oil sealing mechanism, 50, a driving ring, 51, a baffle, 52, an oil seal, 6, a spring, 7, a stationary ring seat, 70, a stationary ring, 700, a stationary ring pin hole, 701, a stationary ring O-ring, 71, a first pin, 72, a first stationary ring seat pin hole, 73, a first pin sleeve, 74, a stationary ring sealing ring pressure plate, 75, a third pin, 76, a second ring seat pin hole, 77, a third pin sleeve, 78, a stationary ring seat pin hole, a third pin, The movable ring sealing device comprises a spring guide pin 79, a static ring seat O-shaped ring, 8, a movable ring seat, 80, a movable ring, 800, a movable ring pin hole, 801, a movable ring O-shaped ring, 81, a second pin, 82, a movable ring seat pin hole, 83, a second pin sleeve, 84, a movable ring sealing ring pressing plate, 85, a movable ring seat O-shaped ring, 9 and a cabin.
[ detailed description ] embodiments
A shaft sealing device for a water jet propulsion system according to the invention will be described in further detail below with reference to specific embodiments.
Referring to fig. 1, a shaft sealing device for a water jet propulsion device includes: axle 1, left gland 2, right gland 3, pneumatic tyre sealing mechanism 4, oil blanket mechanism 5, twelve spring 6, quiet ring seat 7, quiet ring 70, rotating ring seat 8 and rotating ring 80, left side gland 2 is connected with cabin 9, through a plurality of screwed connection between left side gland 2 and the right gland 3, one side of right gland 3 is equipped with installation piece 30, installation piece 30 passes through screw and right gland 3 fixed connection. The outer side of the right gland 3 is provided with a dustproof sleeve 31, and a washing liquid channel 32 which can reach the friction surfaces of the static ring 70 and the dynamic ring 80 is arranged in the right gland 3, so that the friction surfaces can be washed and cooled, and the service life of the friction surfaces is prolonged. And the right gland 3 is provided with an adjusting screw 33 and a nut 34 which are matched with the left gland 2, and the adjusting screw 33 is used for adjusting the parallelism of the left gland 2 and the installation surface of the cabin 9.
The pneumatic tire sealing mechanism 4 includes: air seal ring 40 and clamping ring 41, air tyre sealing mechanism 4 sets up in left gland 2, the cladding of air seal ring 40 is in the outside of clamping ring 41, be equipped with first inflation channel 410 in clamping ring 41, be equipped with the second inflation channel 20 that link up mutually with first inflation channel 410 in the left side gland 2, can aerify in the air seal ring 40 through first inflation channel 410 and second inflation channel 20 for air seal ring 40 holds tightly with axle 1 mutually, keeps apart the sea water outside the cabin, and the sea water flows into the cabin when avoiding maintaining, has made things convenient for mechanical seal's dismantlement and maintenance.
The oil seal mechanism 5 includes: the driving ring comprises a driving ring 50 fixedly connected with the shaft 1, a baffle plate 51 fixedly connected with the left gland 2 and an oil seal 52 arranged between the driving ring 50 and the baffle plate 51, wherein the movable ring seat 8 is connected with the shaft 1 through a first clamping sleeve 10 and a first set screw 11, the first clamping sleeve 10 is arranged between the movable ring seat 8 and the shaft 1, the first set screw 11 abuts against the first clamping sleeve 10 so as to fixedly connect the movable ring seat 8 with the shaft 1, the driving ring 50 is connected with the shaft 1 through a second clamping sleeve 12 and a second set screw 13, the second clamping sleeve 12 is arranged between the driving ring 50 and the shaft 1, and the second set screw 13 abuts against the second clamping sleeve 12 so as to fixedly connect the driving ring 50 with the shaft 1, so that the driving ring 50 and the movable ring seat 8 are driven to rotate together when the shaft 1 rotates. The jacketed transmission structure is stable and reliable, and can avoid the generation of pits or scratches and the like due to the direct contact of the screw and the shaft.
The stationary ring 70 is installed on the stationary ring seat 7 through four first pins 71, the stationary ring seat 7 is provided with four first stationary ring seat pin holes 72 matched with the first pins 71, the stationary ring 70 is provided with four stationary ring pin holes 700 matched with the first pins 71, the first pins 71 are partially accommodated in the first stationary ring seat pin holes 72 and partially accommodated in the stationary ring pin holes 700, the first pins 71 are sleeved with first pin sleeves 73, the outer side of the stationary ring 70 is provided with a stationary ring sealing ring pressing plate 74 abutted against the stationary ring seat 7, the movable ring 80 is installed on the movable ring seat 8 through four second pins 81, the movable ring seat 8 is provided with four movable ring seat pin holes 82 matched with the second pins 81, the movable ring 80 is provided with four movable ring pin holes 800 matched with the second pins 81, the second pins 81 are partially accommodated in the movable ring seat pin holes 82 and partially accommodated in the movable ring pin holes 800, the second pin 81 is sleeved with a second pin sleeve 83, the outer side of the moving ring 80 is provided with a moving ring sealing ring pressing plate 84 abutted against the moving ring seat 8, the stationary ring seat 7 is installed on the right gland 3 through four third pins 75, the stationary ring seat 7 is provided with four second stationary ring seat pin holes 76 matched with the third pins 75, the right gland 3 is provided with four right gland pin holes 35 matched with the third pins 75, the third pins 75 are partially accommodated in the second stationary ring seat pin holes 76 and partially accommodated in the right gland pin holes 35, the third pins 75 are sleeved with third pin sleeves 77, twelve spring accommodating grooves 36 are arranged in the right gland 3, one side of the stationary ring seat 7 is provided with twelve spring guide pins 78, the springs 6 are sleeved on the spring guide pins 78 and accommodated in the spring accommodating grooves 36 of the right gland 3, one end of the springs 6 is abutted against the right gland 3, the other end of the spring 6 is abutted against the stationary ring seat 7, the stationary ring seat 7 is connected with the stationary ring sealing pressing plate 74 through a plurality of screws, and the movable ring seat 8 is connected with the movable ring sealing pressing plate 84 through a plurality of screws. In this embodiment, the dynamic ring 80 is made of pressureless sintered silicon carbide material, the hardness of the dynamic ring 80 is HRA95, the static ring 70 is made of reaction sintered silicon carbide material, and the hardness of the static ring 70 is HRA90, so that a certain hardness difference exists between the two friction pairs, and the wear performance of the sealed friction pair is improved. In this embodiment, the first pin 71, the second pin 81 and the third pin 75 are made of flexible materials, so as to play a role of buffering, which can greatly avoid the situation that the sealing ring is broken due to hard contact between the pins and the holes caused by excessive torque generated when the main engine is started.
Be equipped with rotating ring seat O type circle 85 between rotating ring seat 8 and the axle 1, between rotating ring 80 and the rotating ring seat 8, be equipped with rotating ring O type circle 801 between rotating ring 80 and the rotating ring sealing ring clamp plate 84 respectively, between quiet ring 70 and the quiet ring seat 7 between quiet ring 70 and the quiet ring sealing ring clamp plate 74 be equipped with quiet ring O type circle 701 between quiet ring 70 and the right gland 3 respectively, be equipped with quiet ring seat O type circle 79 between quiet ring seat 7 and the right gland 3, be equipped with right gland O type circle 37 between baffle 51 and the right gland 3.
In conclusion, the static compensation element structure with the multiple springs is adopted, the design form of the multiple springs can meet the requirement that the large-shaft-diameter seal bears uniform compression load, the seal has larger axial compensation capacity by matching with the guide pin, the static compensation element seal structure ensures that the springs do not rotate along with the shaft, the follow-up performance is good, and better fit of the ring surface under the high-speed condition is ensured. In addition, when the installation deviation appears, quiet ring can automatically regulated, can not cause sealed inefficacy and life-span influence because of the deviation of straightness that hangs down etc.. In addition, the movable ring and the static ring in the invention both adopt an integral ring structure form, are not easy to break and are not easy to deform on the end surface subjected to high pressure.
The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, not restrictive; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (10)
1. A shaft seal for a waterjet propulsion device, comprising: axle, left gland, right gland, pneumatic tyre sealing mechanism, oil blanket mechanism, a plurality of spring, quiet ring seat, quiet ring, rotating ring seat and rotating ring, be connected through the first mounting of a plurality of between left side gland and the right gland, pneumatic tyre sealing mechanism includes: air seal circle and clamping ring, oil blanket mechanism includes: the driving ring is fixedly connected with the shaft, the baffle is fixedly connected with the left gland, and the oil seal is arranged between the driving ring and the baffle, the static ring is arranged on the static ring seat through a plurality of first pins and first pin sleeves, the outer side of the static ring is provided with a static ring sealing ring pressing plate which is abutted against the static ring seat, the dynamic ring seat is fixedly connected with the shaft, the dynamic ring is arranged on the dynamic ring seat through a plurality of second pins and second pin sleeves, the outer side of the dynamic ring is provided with a dynamic ring sealing ring pressing plate which is abutted against the dynamic ring seat, the static ring seat is arranged on the right gland through a plurality of third pins and third pin sleeves, a plurality of spring accommodating grooves are arranged in the right gland, a plurality of spring guide pins are arranged on one side of the static ring seat, the spring is sleeved on the spring guide pins and accommodated in the spring accommodating grooves of the right gland, one end of the spring is abutted against the right gland, and the other end of the spring is abutted against the static ring seat, the static ring seat is connected with the static ring sealing ring pressing plate through a plurality of second fixing pieces, and the moving ring seat is connected with the moving ring sealing ring pressing plate through a plurality of third fixing pieces.
2. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: the pneumatic tire sealing mechanism is arranged in the left gland, the pneumatic sealing ring is wrapped on the outer side of the compression ring, a first inflation channel is arranged in the compression ring, and a second inflation channel communicated with the first inflation channel is arranged in the left gland.
3. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: the movable ring seat is connected with the shaft through a first clamping sleeve and a first set screw, and the driving ring is connected with the shaft through a second clamping sleeve and a second set screw.
4. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: and one side of the right gland is provided with an installation sheet which is fixedly connected with the right gland through a fourth fixing piece.
5. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: and a dustproof sleeve is arranged on the outer side of the right gland.
6. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: be equipped with rotating ring seat O type circle between rotating ring seat and the axle, between rotating ring and the rotating ring seat be equipped with rotating ring O type circle between rotating ring and the rotating ring seal ring clamp plate respectively, between quiet ring and the quiet ring seat, between quiet ring and the quiet ring seal ring clamp plate be equipped with quiet ring O type circle between quiet ring and the right gland respectively, be equipped with quiet ring seat O type circle between quiet ring seat and the right gland, be equipped with right gland O type circle between baffle and the right gland.
7. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: the dynamic ring is made of pressureless sintered silicon carbide materials, the hardness of the dynamic ring is HRA95, the static ring is made of reaction sintered silicon carbide materials, and the hardness of the static ring is HRA 90.
8. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: and a washing liquid channel which can reach the friction surface of the static ring and the moving ring is arranged in the right gland.
9. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: the first pin sleeve, the second pin sleeve and the third pin sleeve are all made of flexible materials.
10. A shaft seal assembly for a water jet propulsion unit as claimed in claim 1, wherein: and the right gland is provided with an adjusting screw and a nut which are matched with the left gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911146388.5A CN110816798A (en) | 2019-11-21 | 2019-11-21 | Shaft sealing device for water jet propulsion unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911146388.5A CN110816798A (en) | 2019-11-21 | 2019-11-21 | Shaft sealing device for water jet propulsion unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110816798A true CN110816798A (en) | 2020-02-21 |
Family
ID=69557558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911146388.5A Pending CN110816798A (en) | 2019-11-21 | 2019-11-21 | Shaft sealing device for water jet propulsion unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110816798A (en) |
-
2019
- 2019-11-21 CN CN201911146388.5A patent/CN110816798A/en active Pending
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