CN216994812U - Pressure compensation device integrated on propeller - Google Patents
Pressure compensation device integrated on propeller Download PDFInfo
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- CN216994812U CN216994812U CN202122705806.9U CN202122705806U CN216994812U CN 216994812 U CN216994812 U CN 216994812U CN 202122705806 U CN202122705806 U CN 202122705806U CN 216994812 U CN216994812 U CN 216994812U
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Abstract
The utility model relates to a pressure compensation device integrated on a propeller, which is characterized in that: the propeller shaft penetrates through two ends of the conical shell, the propeller is installed at one end of the propeller shaft, the other end of the propeller shaft is connected with the power shaft, the compensation assembly comprises a cylinder body, a piston rod and a micro-movement adjusting piece which is located in the cylinder body and installed on the piston rod, a closed space is formed by the micro-movement adjusting piece, the cylinder body and the piston rod, lubricating oil is stored in the closed space, and the volume of the closed space is changed through micro-movement of the micro-movement adjusting piece. The utility model forms a structure similar to a general oil cylinder by the piston, the cylinder body, the piston rod and the linear dynamic sealing element, changes the volume of a lubricating oil closed space by the thrust of the cylindrical spiral compression spring and the micro-movement of the piston, and compensates the change of the volume of metal parts and lubricating oil under the condition of extremely small overflow of the lubricating oil and the external high seawater pressure.
Description
Technical Field
The utility model relates to the technical field of deep sea propeller propulsion, in particular to a pressure compensation device integrated on a propeller.
Background
In the whole-sea deep ocean environment from hundreds of meters to more than ten thousand meters, the maximum seawater pressure can reach 110MPa, and the propeller is subjected to huge seawater pressure change from launching.
At present, a pressure compensation device is generally adopted by a deep sea propeller to balance the internal and external pressure difference of a closed space of the propeller, protect members in the closed space from being damaged by the strong pressure of external seawater, prevent seawater from entering internal parts in the closed space, and avoid the emulsification of lubricating oil (oil products with electrical insulating property) by seawater, the corrosion of the internal parts by seawater and the insulation of electrical parts. The existing propeller thruster needs to be separately provided with a pressure compensation device.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: overcomes the defects in the prior art and provides a pressure compensation device integrated on a propeller.
The technical scheme adopted by the utility model for solving the technical problem is as follows: the utility model provides an integrated pressure compensation arrangement in screw propeller, includes conical housing, oar axle and is located the compensation subassembly of conical housing, the oar axle runs through conical housing's both ends, and the screw is installed to its one end, and its other end and power shaft are connected, the compensation subassembly includes cylinder body, piston rod and is located the cylinder body and install the micromovement adjusting part on the piston rod, micromovement adjusting part, cylinder body and piston rod are formed with an enclosure space, there is lubricating oil in the enclosure space, changes the volume of enclosure space through the micromovement of micromovement adjusting part.
The micro-moving adjusting piece, the cylinder body and the piston rod form a closed space, lubricating oil is stored in the closed space, the pressure of the lubricating oil stored in the closed space is slightly higher than the external pressure, the micro-moving adjusting piece is directly communicated with seawater, and when the propeller thruster is in a state of different water depths, the pressure of the lubricating oil is always higher than the external seawater pressure value of the dynamic and static seals of the propeller thruster, so that seawater cannot permeate into the closed space.
Further, the fine movement adjusting piece comprises a piston, a cylindrical spiral compression spring and a spring seat, the spring seat is connected with the cylinder body through threads, the cylindrical spiral compression spring is installed between the spring seat and the piston, and the piston is respectively matched with the cylinder body and the piston rod through linear movable sealing elements.
The piston, the cylinder body, the piston rod and the linear movable sealing element form a structure similar to a general oil cylinder, the volume of a lubricating oil closed space is changed by means of the thrust of the cylindrical spiral compression spring and the micro-movement of the piston, and the change of the volume of the metal piece and the lubricating oil under the condition that the extremely small amount of lubricating oil overflows and the external high seawater pressure is compensated.
Furthermore, the power shaft is assembled in a power shaft bearing hole, the power shaft bearing is arranged on a power shaft bearing seat, and a threaded hole for installing a plug is formed in the power shaft bearing seat.
And a plug is assembled on the bearing seat of the power shaft, and the air can be exhausted from the plug during oil filling.
Furthermore, a power shaft bearing gland is connected to the power shaft bearing seat through a bolt, a static sealing element and a rotary dynamic sealing element are arranged between the power shaft bearing gland and the power shaft bearing seat, the power shaft bearing seat and the cylinder body, the cylinder body and the conical shell are fixedly connected through bolts, and the static sealing element is arranged between the cylinder body and the conical shell.
And a power shaft bearing gland is connected to the power shaft bearing seat through a bolt, so that the outer ring of the power shaft bearing is blocked on the one hand, and the power shaft bearing gland is used as an installation foundation for dynamic and static sealing on the other hand.
Furthermore, the propeller shaft is supported in the conical shell through two propeller bearings arranged side by side, a left propeller bearing cover and a right propeller bearing cover are respectively arranged at the left end and the right end of the two propeller bearings, and rotary dynamic sealing elements are respectively arranged between the propeller shaft and the left propeller bearing cover and between the propeller shaft and the right propeller bearing cover.
The left end and the right end of the two propeller bearings are respectively provided with a propeller bearing left cover and a propeller bearing right cover, so that the outer rings of the propeller bearings are blocked on one hand, and the left end and the right end of the two propeller bearings are used as dynamic and static seal installation bases on the other hand; the rotary dynamic sealing element is arranged to prevent external seawater from permeating into the lubricating oil in the conical shell.
Furthermore, a spacer ring is arranged between the two propeller bearings, an annular groove is arranged on the inner ring of the spacer ring, 4 communicating holes communicated with the annular groove are uniformly formed in the outer ring of the spacer ring along the circumferential direction, and a radial hole communicated with the groove through the communicating hole of the spacer ring is formed in the middle of the propeller shaft.
The lubricating oil can flow through the communicating holes of the spacer ring to reach the propeller bearing and the inner part of the conical shell.
Furthermore, the propeller is connected with one end of the propeller shaft through a flat key and is tightly pressed by a locking nut and a locking thin nut which are sequentially arranged on the propeller shaft, and a plug is connected with the end face of the end of the propeller shaft through a thread.
The locking nut and the locking thin nut tightly press the propeller by a double-nut locking structure.
Furthermore, one end of the conical shell, which is close to the propeller, is provided with a process oil hole, and a plug is arranged on the process oil hole.
The plug blocks the process oil hole of the conical shell on one hand and can be used as an oil filling exhaust hole on the other hand.
Furthermore, a section of circumferential clearance is arranged between the propeller and the conical shell, and three through holes are formed in the periphery of one end, close to the power shaft, of the cylinder body.
The external seawater can freely reach a plurality of cavities of the propeller thruster through the gaps and the through holes.
The beneficial effects of the utility model are: the utility model forms a similar general oil cylinder structure by the piston, the cylinder body, the piston rod and the linear dynamic sealing element to form a pressure compensation device suitable for different water depth environments; lubricating oil is stored in the closed space, and the pressure intensity of the lubricating oil is always slightly higher than that of external seawater; the volume of the closed space of the lubricating oil is changed by means of the thrust of the cylindrical helical compression spring and the micro-movement of the piston, and the change of the volumes of the metal part and the lubricating oil under the condition of extremely small overflow of the lubricating oil and the external high seawater pressure is compensated; the formed pressure compensation device is in the shape of a rotator integrally integrated with the propeller, has a streamline shape and reduces the propeller resistance. When the propeller thruster is submerged in different water depths, a pressure compensation device does not need to be arranged independently, and the cost is saved.
Drawings
The utility model is further described with reference to the following figures and embodiments.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic view of the spacer ring of the present invention.
Fig. 3 is a sectional view in the direction a-a of fig. 2.
In the figure: 1. the dynamic shaft bearing comprises a dynamic shaft bearing seat, a plug, an O-shaped ring, a dynamic shaft bearing gland, a dynamic shaft seal, a cylinder body, a spring seat, a cylindrical spiral compression spring, a piston, a T-shaped GREEN ring, a wear-resisting ring, a conical shell, a piston rod, a propeller bearing right cover, a propeller bearing 18, a propeller bearing left cover, a propeller bearing 21, a propeller shaft 22, a locking nut 23, a locking thin nut 24, a propeller shaft left dynamic seal 27, a spacer ring 29, a groove 29-1, a communication hole 29-2, a propeller shaft right dynamic seal 30, a dynamic shaft bearing 33 and a dynamic shaft 34.
Detailed Description
The utility model will now be further described with reference to the accompanying drawings. These drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, a pressure compensation device integrated in a propeller thruster comprises a conical shell 13, a propeller shaft 22 and a compensation assembly located in the conical shell 13, wherein the propeller shaft 22 penetrates through two ends of the conical shell 13, one end of the propeller shaft is provided with a propeller 21, the other end of the propeller shaft is connected with a power shaft 34, the compensation assembly comprises a cylinder body 6, a piston rod 14 and a fine movement adjusting piece located in the cylinder body 6 and arranged on the piston rod 14, a closed space is formed by the fine movement adjusting piece, the cylinder body 6 and the piston rod 14, lubricating oil is stored in the closed space, and the volume of the closed space is changed by the fine movement of the fine movement adjusting piece.
The fine movement adjusting piece comprises a piston 10, a cylindrical spiral compression spring 9 and a spring seat 8, the spring seat 8 is in threaded connection with the cylinder body 6, the cylindrical spiral compression spring 9 is installed between the spring seat 8 and the piston 10, and the piston 10 is respectively matched with the cylinder body 6 and the piston rod 14 through linear movable sealing pieces. The linear dynamic sealing element comprises a T-shaped GREEN 11 and a wear-resistant ring 12, the friction coefficients of the T-shaped GREEN 11 at two positions are far smaller than that of a general linear sealing structure, and the two positions are guided downwards by the wear-resistant ring 12 without creeping phenomenon, so that the linear dynamic sealing element is suitable for micro slow movement of the piston 10; meanwhile, the bidirectional sealing pressure difference of the T-shaped GRILAR 11 is 10MPa, in the embodiment, the internal and external pressure difference of the T-shaped GRILAR 11 is 0-0.1 MPa and is far smaller than the sealing range of the T-shaped GRILAR 11, so that mutual leakage of lubricating oil and seawater is avoided.
The power shaft 34 is assembled in a power shaft bearing 33 hole, the power shaft bearing 33 is arranged on the power shaft bearing seat 1, and a threaded hole for installing the plug 2 is formed in the power shaft bearing seat 1. A power shaft bearing gland 4 is connected to the power shaft bearing seat 1 through a bolt, a static sealing element and a rotary dynamic sealing element are arranged between the power shaft bearing gland 4 and the power shaft bearing seat 1, the static sealing element adopts an O-shaped ring 3, the O-shaped ring 3 belongs to an end face sealing structure, and zero leakage can be realized through static sealing of the O-shaped ring 3 under the condition of small pressure difference; the rotary dynamic sealing element is a dynamic shaft dynamic seal 5, so that external seawater can be prevented from permeating lubricating oil in a bearing seat 1 of the dynamic shaft, internal parts are prevented from being corroded by seawater, and internal electrical elements (the lubricating oil is insulating oil) are protected; the power shaft bearing seat 1 is fixedly connected with the cylinder body 6 and the cylinder body 6 are fixedly connected with the conical shell 13 through bolts, and a static sealing element is arranged between the cylinder body 6 and the conical shell 13, is also an O-shaped ring 3 and belongs to an end face sealing structure.
The propeller shaft 22 is supported in the conical shell 13 through two propeller bearings 18 arranged side by side, a propeller bearing left cover 20 and a propeller bearing right cover 16 are respectively arranged at the left end and the right end of the two propeller bearings 18, rotary dynamic sealing elements are respectively arranged between the propeller shaft 22 and the propeller bearing left cover 20 and between the propeller shaft 22 and the propeller bearing right cover 16, the rotary sealing elements are a propeller shaft left dynamic sealing element 27 and a propeller shaft right dynamic sealing element 30 which are respectively arranged between the propeller shaft 22 and the propeller bearing left cover 20 and between the propeller shaft 22 and the propeller bearing right cover 16, and in order to prevent external seawater from permeating into lubricating oil in the conical shell 13. The space ring 29 is arranged between the two propeller bearings 18, as shown in fig. 2 and fig. 3, an annular groove 29-1 is arranged on the inner ring of the space ring 29, 4 communicating holes 29-2 communicated with the annular groove 29-1 are uniformly arranged on the outer ring of the space ring 29 along the circumferential direction, radial holes communicated with the groove 29-1 through the communicating holes 29-2 of the space ring 29 are arranged in the middle of the propeller shaft 22, and lubricating oil can flow through the 4 holes of the space ring 29 to reach the inside of the propeller bearings 18 and the conical shell 13. The propeller 21 is connected with one end of the propeller shaft 22 through a flat key, and is pressed tightly by a locking nut 23 and a locking thin nut 24 which are sequentially arranged on the propeller shaft 22, and the end surface of the end of the propeller shaft 22 is connected with a plug 2 through a thread.
One end of the conical shell 13 close to the propeller 21 is provided with a process oil hole, and the process oil hole is provided with a plug 2. A section of circumferential clearance is formed between the propeller 21 and the conical shell 13, and three through holes are formed in the periphery of one end, close to the power shaft 34, of the cylinder body 6.
The pressure compensation principle of the embodiment is as follows:
the external seawater freely reaches a plurality of cavities through 3 through holes radially formed in the right end of the cylinder body 6 and the circumferential clearance between the propeller 21 and the conical shell 13; lubricating oil is filled into a plurality of cavities and pore canals through the plug 2 on the end face of the left end of the paddle shaft 22 and the pore canals of the paddle shaft 22; the pressure of the cylindrical spiral compression spring 9 of the piston 10 is consistent with the pressure of the external seawater, when the spiral propeller is in a state of different water depths, the pressure of the external seawater changes correspondingly, the piston 10 bears the corresponding pressure of the external seawater, the pressure is transmitted to lubricating oil in the sealed space, and the pressure of the lubricating oil is equal to: the outside seawater pressure and the thrust of the piston exerted by the cylindrical helical compression spring 9 form lubricating oil pressure, the internal pressure of a closed chamber formed by all movable and static seals and closed lubricating oil parts is slightly greater than the outside seawater pressure, and the pressure difference is equal to the thrust of the cylindrical helical compression spring 9 divided by the annular area of the right end face of the piston 10, so that on one hand, seawater can be prevented from entering the lubricating oil, and on the other hand, parts such as the conical shell 13, the cylinder body 6, the power shaft bearing seat 1 and the like are prevented from being crushed by the outside seawater;
the method is characterized in that oil is filled into an inner cavity of a propeller through a plug 2 (with an oil filling one-way valve and a sealing ring) on the end face of the left end of a propeller shaft 22 in an air environment, when the oil filling process starts, the plug 2 on the end face of the left end of the propeller shaft 22 and the plug 2 on a technical oil hole of a conical shell 13 are unscrewed to remove air, so that a small part of lubricating oil is screwed after overflowing from two holes, when the pressure of a pressure gauge attached to an oil filling system (not shown in the figure) reaches 0.05-0.1 MPa, the oil filling is stopped, and at the moment, a cylindrical spiral compression spring 9 is static at a certain position;
when the power shaft 34 and the paddle shaft 22 rotate at high speed, a very small amount of lubricating oil leaks into seawater from the dynamic seals 5, 27 and 30 in the dynamic seals, so that dry friction between rubber parts in the dynamic seals and the outer surface of the rotating shaft can be avoided, and heating and friction torque can be reduced; under the action of the cylindrical helical compression spring 9, the micro-movement of the piston 10 can compensate the volume reduction of the lubricating oil in real time, and the pressure intensity of the lubricating oil is always slightly higher than that of the external seawater;
the volumes of the metal piece and the lubricating oil can be changed under the external high pressure, and if the full-sea-depth propeller is at the deepest sea position, the external sea pressure is about 110MPa, and the volumes of the metal piece and the lubricating oil can be compressed; meanwhile, the deep sea environment temperature is usually lower than the environment temperature when the inner cavity of the propeller is filled with oil, and the volume of the lubricating oil can be reduced. The volume and pressure variations of the lubricating oil under these two factors can be compensated by means of a small movement of the piston 10.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.
Claims (9)
1. A pressure compensation device integrated on a propeller is characterized in that: the propeller shaft penetrates through two ends of the conical shell, the propeller is installed at one end of the propeller shaft, the other end of the propeller shaft is connected with the power shaft, the compensation assembly comprises a cylinder body, a piston rod and a micro-movement adjusting piece which is located in the cylinder body and installed on the piston rod, a closed space is formed by the micro-movement adjusting piece, the cylinder body and the piston rod, lubricating oil is stored in the closed space, and the volume of the closed space is changed through micro-movement of the micro-movement adjusting piece.
2. A propeller-integrated pressure compensation device according to claim 1, wherein: the micro-movement adjusting piece comprises a piston, a cylindrical spiral compression spring and a spring seat, the spring seat is in threaded connection with the cylinder body, the cylindrical spiral compression spring is installed between the spring seat and the piston, and the piston is respectively matched with the cylinder body and the piston rod through linear movable sealing parts.
3. A propeller-integrated pressure compensation device according to claim 1, wherein: the power shaft is assembled in a power shaft bearing hole, the power shaft bearing is arranged on a power shaft bearing seat, and a threaded hole for installing a plug is formed in the power shaft bearing seat.
4. A propeller-integrated pressure compensating device according to claim 3, wherein: the power shaft bearing block is connected with a power shaft bearing gland through a bolt, a static sealing element and a rotary dynamic sealing element are arranged between the power shaft bearing gland and the power shaft bearing block, the power shaft bearing block is fixedly connected with the cylinder body, the cylinder body and the conical shell through bolts, and the static sealing element is arranged between the cylinder body and the conical shell.
5. Pressure compensation device integrated in a propeller according to claim 1, characterized in that: the propeller shaft is supported in the conical shell through two propeller bearings arranged side by side, a left propeller bearing cover and a right propeller bearing cover are respectively arranged at the left end and the right end of the two propeller bearings, and rotary dynamic sealing elements are respectively arranged between the propeller shaft and the left propeller bearing cover as well as between the propeller shaft and the right propeller bearing cover.
6. Pressure compensation device integrated in a propeller according to claim 5, characterized in that: a spacer ring is arranged between the two propeller bearings, an annular groove is formed in the inner ring of the spacer ring, 4 communicating holes communicated with the annular groove are uniformly formed in the outer ring of the spacer ring in the circumferential direction, and radial holes communicated with the groove through the communicating holes of the spacer ring are formed in the middle of the propeller shaft.
7. The propeller-integrated pressure compensating apparatus of claim 5, wherein: the propeller is connected with one end of the propeller shaft through a flat key and is tightly pressed by a locking nut and a locking thin nut which are sequentially arranged on the propeller shaft, and a plug is connected with the end face of the end of the propeller shaft through a thread.
8. Pressure compensation device integrated in a propeller according to claim 1, characterized in that: one end of the conical shell, which is close to the propeller, is provided with a process oil hole, and a plug is arranged on the process oil hole.
9. Pressure compensation device integrated in a propeller according to claim 1, characterized in that: one section circumference clearance has between screw and the conical shell, and the cylinder body is close to the one end of power shaft and has seted up three through-holes along the periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122705806.9U CN216994812U (en) | 2021-11-05 | 2021-11-05 | Pressure compensation device integrated on propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122705806.9U CN216994812U (en) | 2021-11-05 | 2021-11-05 | Pressure compensation device integrated on propeller |
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| Publication Number | Publication Date |
|---|---|
| CN216994812U true CN216994812U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122705806.9U Active CN216994812U (en) | 2021-11-05 | 2021-11-05 | Pressure compensation device integrated on propeller |
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| CN (1) | CN216994812U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823578A (en) * | 2024-03-06 | 2024-04-05 | 江苏江进泵业有限公司 | Planetary gear box special for submersible axial-flow pump |
-
2021
- 2021-11-05 CN CN202122705806.9U patent/CN216994812U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823578A (en) * | 2024-03-06 | 2024-04-05 | 江苏江进泵业有限公司 | Planetary gear box special for submersible axial-flow pump |
| CN117823578B (en) * | 2024-03-06 | 2024-05-14 | 江苏江进泵业有限公司 | Planetary gear box special for submersible axial-flow pump |
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