CN113799952A - Oil distribution sealing device with cooling function for controllable pitch propeller - Google Patents
Oil distribution sealing device with cooling function for controllable pitch propeller Download PDFInfo
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- CN113799952A CN113799952A CN202110958990.XA CN202110958990A CN113799952A CN 113799952 A CN113799952 A CN 113799952A CN 202110958990 A CN202110958990 A CN 202110958990A CN 113799952 A CN113799952 A CN 113799952A
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- distribution sealing
- cooling
- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H3/00—Propeller-blade pitch changing
- B63H3/06—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical
- B63H3/08—Propeller-blade pitch changing characterised by use of non-mechanical actuating means, e.g. electrical fluid
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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
- F16J15/324—Arrangements for lubrication or cooling of the sealing itself
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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
- F16J15/3268—Mounting of sealing rings
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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)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention provides an oil distribution sealing device of a controllable pitch propeller with a cooling function, which comprises an oil distribution shaft and an oil distribution sealing sleeve sleeved outside the oil distribution shaft; the middle part of the inner wall of the oil distribution sealing sleeve is provided with a central annular oil groove and an axial oil hole, and the outer wall of the oil distribution sealing sleeve is provided with a forward oil port, a backward oil port, a cooling oil inlet and a cooling oil outlet; the cooling oil inlet and the cooling oil outlet are arranged along the circumferential direction of the central annular oil groove and are communicated with the central annular oil groove; the oil port for forward turning and the oil port for reverse turning are arranged on two axial sides of the oil distribution sealing sleeve, and the oil port for forward turning and the oil port for reverse turning are communicated with the inner wall of the oil distribution sealing sleeve and an oil path inside the oil distribution shaft. The invention realizes the oil distribution sealing function of the controllable pitch propeller, and simultaneously carries out forced cooling on heat generated by friction of the oil distribution sealing pair, thereby effectively reducing the temperature of the oil distribution sealing pair, overcoming abnormal abrasion and ablation of the oil distribution sealing pair caused by heat accumulation and temperature rise, and improving the working performance reliability of the oil distributor of the controllable pitch propeller.
Description
Technical Field
The invention belongs to the field of ship power propulsion systems, and particularly relates to an oil distribution sealing device of a controllable pitch propeller with a cooling function.
Background
The controllable pitch propeller device is widely applied to the field of ships due to excellent control performance and ship, engine and propeller matching performance. The oil distributor is a key part in the pitch control paddle device, and one of the main functions of the oil distributor is to input high-pressure and low-pressure hydraulic oil into a pitch control mechanism of the pitch control paddle in a static or rotary state of a shaft system. When the oil distribution shaft rotates, a clearance dynamic sealing pair is formed with the oil distribution sealing sleeve, so that the distance-adjusting hydraulic oil enters a system distance-adjusting oil way, and meanwhile, certain heat is generated due to friction.
The friction power consumption of the oil distribution sealing pair of the oil distributor is large, if the oil distribution shaft is made of stainless steel materials with poor heat dissipation performance, and meanwhile, the sealing pair is not cooled and lubricated enough under the stable-distance working condition, the sealing pair is easy to generate heat, and the sealing pair is easy to wear and ablate, so that the distance adjusting function fails. Therefore, a novel oil distribution sealing device for the controllable-pitch propeller with a cooling function is needed to meet the technical requirements of a shafting type oil distributor for the controllable-pitch propeller of a ship.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an oil distribution sealing device of a controllable pitch propeller with a cooling function. The invention is suitable for the controllable pitch propeller device of the power propulsion system of ships and warships.
The invention is realized by the following technical scheme: the invention provides an oil distribution sealing device of a controllable-pitch propeller with a cooling function, which is connected with a main oil tank and an oil drainage tank of a hydraulic system and is characterized by comprising an oil distribution sealing sleeve and an oil distribution shaft;
the oil distribution sealing sleeve is a fixedly arranged tubular sleeve, and the oil distribution shaft is a cylindrical shaft; the oil distribution shaft is coaxial with the oil distribution sealing sleeve and is arranged in the oil distribution sealing sleeve to form an oil distribution sealing pair;
the middle part of the inner wall of the oil distribution sealing sleeve is provided with a central annular oil groove, and the outer wall of the oil distribution sealing sleeve is provided with a forward oil port, a reverse oil port, a cooling oil inlet and a cooling oil outlet; the oil with pressure is introduced into the main oil tank from the main oil tank through the forward oil port, the backward oil port and the cooling oil inlet, and the cooling oil outlet is an oil return passage and is connected with the main oil tank;
the cooling oil inlet and the cooling oil outlet are arranged along the circumferential direction of the central annular oil groove, and the cooling oil inlet and the cooling oil outlet are communicated with the central annular oil groove; the oil port for forward turning and the oil port for reverse turning are arranged on two axial sides of the oil distribution sealing sleeve, and the oil port for forward turning and the oil port for reverse turning are communicated with the inner wall of the oil distribution sealing sleeve and are used for introducing oil liquid to adjust the distance and lubricating the oil distribution sealing pair.
Furthermore, a first oil drainage port and a second oil drainage port are arranged at the left end and the right end of the outer wall of the oil distribution sealing sleeve; the first oil drainage port and the second oil drainage port are connected with the oil drainage box and used for discharging oil leaked through the oil distribution sealing pair during distance adjustment and distance stabilization.
Furthermore, the oil distribution sealing sleeve comprises a left annular oil groove, a right annular oil groove and an axial cooling oil hole;
the left end annular oil groove is formed in the side wall of the left end of the oil distribution sealing sleeve and is communicated with the cooling oil inlet; the right annular oil groove is formed in the side wall of the right end of the oil distribution sealing sleeve and communicated with the cooling oil outlet; the axial cooling oil hole is arranged between the left end annular oil groove and the right end annular oil groove, so that the left end annular oil groove is communicated with the right end annular oil groove.
Furthermore, a plurality of axial cooling oil holes are formed in the oil distribution sealing sleeve and are uniformly distributed in the oil distribution sealing sleeve.
Furthermore, during distance adjustment, the forward oil port or the backward oil port supplies pressure oil for distance adjustment, distance adjustment return oil is fed into the backward oil port or the forward oil port, the oil pressure in the central annular oil groove is 0.2Mpa, and the first oil drain port and the second oil drain port have no pressure; and oil flows to the first oil drainage port, the second oil drainage port and the central annular oil groove at two ends after passing through the oil distribution sealing pair.
Furthermore, in the distance stabilizing process, 0.5MPa of oil is simultaneously supplied to the forward oil port and the reverse oil port, the pressure of the oil in the central annular oil groove is 0.2MPa, and the first oil drain port and the second oil drain port have no pressure; and oil liquid flows to the first oil drainage port and the second oil drainage port at two ends after passing through the oil distribution sealing pair.
Furthermore, the oil distribution sealing device of the controllable pitch propeller comprises an anti-rotation support and a fixed support, wherein an anti-rotation hole is formed in the outer wall of the oil distribution sealing sleeve, one end of the anti-rotation support is connected with the anti-rotation hole through an anti-rotation joint, and the other end of the anti-rotation support is connected with the fixed support.
The invention has the beneficial effects that:
the invention arranges the annular oil groove and the axial oil hole in the oil distribution sealing sleeve, injects oil into the annular oil groove and the axial oil hole through the cooling oil inlet, the oil flows in the annular oil groove and the axial oil hole and is discharged from the cooling oil outlet, the oil distribution sealing pair is cooled forcibly under low pressure, the heat on the oil distribution sealing sleeve is fully absorbed, meanwhile, the oil distribution sealing pair is lubricated, so that the adverse factors of abrasion and ablation of sealing pair materials caused by large heat generated by friction between the oil distribution sealing pair and a rotating oil distribution shaft and overhigh temperature, reduction of the service life of the oil distribution sealing pair caused by poor heat dissipation performance of a shaft system material and pitch adjustment failure of a pitch adjustment paddle are overcome, the reliability of sealing and cooling of the oil distributor is further improved, and the technical requirement of ships and ships (particularly poor heat dissipation performance of the shaft system material) on the pitch adjustment paddle oil distributor is met.
The oil distribution sealing sleeve is provided with oil drainage ports at two ends, and the oil drainage ports are used for enabling oil liquid flowing into the oil port for forward driving and the oil port for backward driving to respectively flow to two ends of the oil distribution sealing sleeve and the central annular oil groove in the state of distance adjustment and distance stabilization, so that the oil distribution sealing sleeve is fully cooled and lubricated.
According to the invention, a plurality of axial oil holes are uniformly distributed in the pipe wall of the oil distribution sealing sleeve, so that cooling oil can fully flow in the oil distribution sealing sleeve, and the cooling and heat dissipation capability is improved.
Drawings
Fig. 1 is a schematic structural diagram of an oil distribution sealing device of a controllable pitch propeller with a cooling function according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structural diagram of an oil seal device of a controllable pitch propeller with a cooling function according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an oil distribution sealing sleeve in an oil distribution sealing device of a controllable pitch propeller provided by an embodiment of the invention;
fig. 4 is a schematic cross-sectional structural diagram of an oil distribution sealing assembly in an oil distribution sealing device of a controllable pitch propeller with a cooling function according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional structural diagram of a cooling oil inlet in an oil seal device of a controllable pitch propeller with a cooling function according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of an axial cooling oil hole in an oil seal device of an adjustable pitch propeller according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional structural diagram of a stop block in an oil seal device of a controllable pitch propeller with a cooling function according to an embodiment of the present invention;
fig. 8 is a schematic diagram illustrating the flow of oil in the central annular oil groove of the oil seal device of the controllable pitch propeller with the cooling function according to the embodiment of the present invention.
The reference numbers illustrate:
1-oil distribution sealing sleeve, 2-oil distribution shaft, 3-anti-rotation support, 4-fixed support, 5-stop block, 11-vehicle oil port, 12-vehicle oil port, 13-cooling oil inlet, 14-first oil drain port, 15-cooling oil outlet, 16-second oil drain port, 17-central annular oil groove, 18-left end annular oil groove, 19-right end annular oil groove and 20-axial cooling oil hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention.
As shown in the attached drawings 1-3, the invention provides an oil distribution sealing device of a controllable-pitch propeller with a cooling function, which is connected with a main oil tank and an oil drainage tank of a hydraulic system; this roll adjustment oar joins in marriage oily sealing device includes: the oil distribution seal sleeve 1 is a fixedly arranged tubular sleeve; the oil distribution shaft 2 is a cylindrical shaft, is coaxial with the oil distribution sealing sleeve 1 and is arranged in the oil distribution sealing sleeve 1, and the oil distribution shaft 2 can be static or rotary in the oil distribution sealing sleeve 1; the oil distribution sealing sleeve 1 and the oil distribution shaft 2 form an oil distribution sealing pair. The oil distribution sealing sleeve 1 is respectively provided with anti-rotation structures along the two sides of the outer wall in the radial horizontal direction, and is arranged on the fixed support 4 through the anti-rotation structures.
As shown in fig. 4-6, the oil distributing sealing sleeve 1 is provided with a central annular oil groove 17, a left end annular oil groove 18, a right end annular oil groove 19 and a plurality of axial cooling oil holes 20. The central annular oil groove 17 is arranged on the inner wall of the axial middle position of the oil distribution sealing sleeve 1, the left end annular oil groove 18 is arranged on the end face of the left side wall of the oil distribution sealing sleeve 1, the right end annular oil groove 19 is arranged on the end face of the right side wall of the oil distribution sealing sleeve 1, and the central annular oil groove 17, the left end annular oil groove 18 and the right end annular oil groove 19 are all concentrically arranged. The left end annular oil groove 18 and the right end annular oil groove 19 are both provided with pressing plates matched with the groove type for preventing oil leakage. A plurality of axial cooling oil holes 20 are all provided between the left end annular oil groove 18 and the right end annular oil groove 19 for connecting the left end annular oil groove 18 and the right end annular oil groove 19, so that the left end annular oil groove 18 and the right end annular oil groove 19 are communicated with each other.
The outer wall of the oil distribution sealing sleeve 1 is provided with a forward oil port 11, a reverse oil port 12, a cooling oil inlet 13 and a cooling oil outlet 15.
The cooling oil inlet 13 and the cooling oil outlet 15 are both communicated with the central annular oil groove 17 and connected with a hydraulic system, and the hydraulic system is used for injecting oil liquid into the central annular oil groove 17; the oil port 11 for forward turning and the oil port 12 for reverse turning are respectively arranged at two axial sides of the oil distribution sealing sleeve 1, and the oil port 11 for forward turning and the oil port 12 for reverse turning are both communicated with the inner wall of the oil distribution sealing sleeve 1 and are used for introducing pressure oil, enabling the oil to flow between the oil distribution sealing sleeve 1 and the oil distribution shaft 2 for distance adjustment and lubricating an oil distribution sealing pair.
When the vehicle is ahead and the distance is adjusted, high-pressure oil is led into the vehicle-ahead oil port 11, and low-pressure return oil is returned to the hydraulic system through the vehicle-backing oil port 12. On the contrary, when backing and adjusting distance, the backing oil port 12 is communicated with high-pressure oil, and low-pressure return oil returns to the hydraulic system through the main oil port 11. In the distance adjusting process, oil flows between the oil distribution sealing sleeve 1 and the oil distribution shaft 2, heat generated by friction of an oil distribution sealing pair is taken away, and the temperature rise of the sealing pair is not too high.
When the working state is in a stable pitch, a main pitch adjusting oil circuit arranged in a hydraulic system outside the pitch adjusting propeller simultaneously supplies pressure lubricating oil with the pressure not less than 0.5MPa to the reversing oil port 12 and the main oil port 11 through oil return back pressure, and oil flowing between the oil distribution sealing sleeve 1 and the oil distribution shaft 2 flows to the central annular oil groove 17 and the left end and the right end of the oil distribution sealing sleeve 1 under the pressure action to lubricate an oil distribution sealing pair.
Both ends still are equipped with first draining mouth 14 and second draining mouth 16 about the oil distribution seal cover 1 outer wall, and first draining mouth 14 and second draining mouth 16 all communicate with hydraulic system's draining tank for discharge to the fluid that flows to both ends about between oil distribution seal cover 1 and the oil distribution shaft 2 under roll adjustment and steady operation state.
In this embodiment, the left and right ends of the oil distribution sealing sleeve 1 are respectively provided with an annular cover plate, and the annular cover plate is provided with a first oil drainage port 14 and a second oil drainage port 16.
During distance adjustment, pressure oil for distance adjustment is supplied to the front oil port 11 or the back oil port 12, distance adjustment oil return is performed in the back oil port 12 or the front oil port 11, the oil pressure in the central annular oil groove 17 is 0.2Mpa, and no pressure exists in the first oil drain port 14 and the second oil drain port 16; the oil liquid flows to the first oil drain port 14, the second oil drain port 16 and the central annular oil groove 17 at the two ends through the oil distribution sealing pair.
During distance stabilization, return oil in a pitch-adjusting propeller hydraulic system flows into a central annular oil groove 17 through a cooling oil inlet 13, the pressure of cooling oil in the central annular oil groove 17 is 0.2Mpa, the oil flows through a left end annular oil groove 18 and a right end annular oil groove 19 from the central annular oil groove 17 through an axial cooling oil hole 20 under the action of pressure, then flows back to the central annular oil groove 17, flows out from a cooling oil outlet 15 and flows back to a main oil tank of the hydraulic system, heat generated by friction of an oil distribution sealing pair is taken away by the flow of the oil, and the cooling effect on the oil distribution sealing pair is achieved.
As shown in fig. 7, in the present embodiment, the cooling oil inlet 13 and the cooling oil outlet 15 are both disposed along the central annular oil groove 17, and the cooling oil inlet 13 and the cooling oil outlet 15 are disposed adjacently, so that the passage angle between the cooling oil inlet 13 and the cooling oil outlet 15 and the central annular oil groove 17 is as small as possible without affecting the oil port connection pipeline. The central annular oil groove 17 is provided with a stop block 5 between the positions communicated with the cooling oil inlet 13 and the cooling oil outlet 15, and the stop block is used for enabling oil to flow along the central annular oil groove 17 so as to fully cool the oil distribution sealing sleeve 1; the size of the stop block 5 is matched with the size of the section of the central annular oil groove 17, and the stop block is fixed in the central annular oil groove 17 through bolts.
In the present embodiment, the diameter size of the left annular oil groove 18 and the right annular oil groove 19 is the same, and the diameter size of the central annular oil groove 17 is smaller than that of the left annular oil groove 18 and the right annular oil groove 19; a plurality of axial cooling oil holes 20 are uniformly distributed along the center of the oil distribution sealing sleeve 1 as an axis and are used for introducing oil to uniformly cool the oil distribution sealing sleeve 1; the side wall of the channel with the cooling oil inlet 13 connected with the central annular oil groove 17 is connected with the left end annular oil groove 18 through an axial cooling oil hole 20, and the side wall of the channel with the cooling oil outlet 15 connected with the central annular oil groove 17 is connected with the right end annular oil groove 19 through an axial cooling oil hole 20.
In this embodiment, join in marriage the horizontal both sides of oil seal cover 1 outer wall and still be equipped with and prevent changeing the hole, prevent changeing the hole and be connected with fixed bolster 4 through preventing changeing support 3, prevent changeing support 3 and be L type support, L type support one end be equipped with prevent changeing the jogged joint, the other end is connected with fixed bolster 4.
As shown in fig. 8, when the pitch is stabilized, the main pitch adjusting oil circuit of the pitch adjusting propeller hydraulic system simultaneously supplies 0.5MPa of pressure oil to the forward oil port 11 and the reverse oil port 12 through oil return back pressure, so that the oil distribution sealing pair can be lubricated. Meanwhile, return oil in the hydraulic system of the controllable pitch propeller enters an annular oil groove and a plurality of axial cooling oil holes 20 in the oil distribution sealing sleeve 1 through a cooling oil inlet 13 on the oil distribution sealing sleeve 1, and returns to the main oil tank through a cooling oil outlet 15 after the oil distribution sealing sleeve 1 is cooled circularly, so that heat generated by friction of an oil distribution sealing pair is taken away, and the cooling effect on the oil distribution sealing pair is achieved. And a stop block 5 is arranged in the central annular oil groove 17, so that the oil is ensured to fully cool the sealing pair and then returns to the cooling oil outlet 15.
The first oil drain port 14 and the second oil drain port 16 which are arranged on the annular cover plates at the two ends of the oil distribution sealing sleeve 1 are communicated with the oil drain box, no pressure exists, the pressure of cooling oil in the central annular oil groove 17 is 0.2MPa, the pressure of cooling oil in the positive oil port 11 and the reverse oil port 12 is 0.5MPa, and pressure difference exists. Oil liquid supplied to the main oil port 11 and the reverse oil port 12 flows into the first oil drainage port 14, the second oil drainage port 16 and the central annular oil groove 17 through a gap between the oil distribution sealing sleeve 1 and the oil distribution shaft 2, so that lubricating oil liquid in the gap sealing pair flows, and the lubricating and cooling effects on the gap sealing are achieved.
The oil distribution sealing device with the novel structure provided by the invention has the advantages that the oil distribution sealing function and the sealing performance under the high-pressure condition are met, meanwhile, the oil distribution sealing pair is subjected to low-pressure forced cooling, the defects that the sealing pair material is abraded and ablated due to large heat generated by friction between the oil distribution sealing pair and a rotating oil distribution shaft and the temperature is too high, the service life of the oil distribution sealing pair is shortened and the distance adjustment of the distance adjusting propeller is failed due to poor heat dissipation performance of a shafting material are overcome, the reliability of sealing and cooling of the oil distributor is further improved, and the technical requirements of ships and ships with poor heat dissipation of the shafting material on the oil distributor of the distance adjusting propeller are met. The invention is suitable for the controllable pitch propeller device of the power propulsion system of ships and warships.
It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (7)
1. The oil distribution sealing device of the controllable-pitch propeller with the cooling function is connected with a main oil tank and an oil drainage tank of a hydraulic system, and is characterized by comprising an oil distribution sealing sleeve (1) and an oil distribution shaft (2);
the oil distribution sealing sleeve (1) is a fixedly arranged tubular sleeve, and the oil distribution shaft (2) is a cylindrical shaft; the oil distribution shaft (2) is coaxial with the oil distribution sealing sleeve (1) and is arranged in the oil distribution sealing sleeve (1) to form an oil distribution sealing pair;
a central annular oil groove (17) is formed in the middle of the inner wall of the oil distribution sealing sleeve (1), and a front vehicle oil port (11), a back vehicle oil port (12), a cooling oil inlet (13) and a cooling oil outlet (15) are formed in the outer wall of the oil distribution sealing sleeve (1); oil with pressure is introduced into the main oil tank from the main oil tank through the vehicle forward oil port (11), the vehicle backward oil port (12) and the cooling oil inlet (13), and the cooling oil outlet (15) is an oil return passage and is connected with the main oil tank;
the cooling oil inlet (13) and the cooling oil outlet (15) are arranged along the circumferential direction of the central annular oil groove (17), and the cooling oil inlet (13) and the cooling oil outlet (15) are communicated with the central annular oil groove (17); the oil port (11) for turning right and the oil port (12) for backing are arranged on two axial sides of the oil distribution sealing sleeve (1), and the oil port (11) for turning right and the oil port (12) for backing are communicated with the inner wall of the oil distribution sealing sleeve (1) and are used for introducing oil liquid to adjust distance and lubricating the oil distribution sealing pair.
2. The oil distribution sealing device of the controllable pitch propeller according to claim 1, wherein a first oil drainage port (14) and a second oil drainage port (16) are arranged at the left end and the right end of the outer wall of the oil distribution sealing sleeve (1); the first oil drainage port (14) and the second oil drainage port (16) are connected with the oil drainage box, and the first oil drainage port (14) and the second oil drainage port (16) are used for discharging oil leaked through the oil distribution sealing pair during distance adjustment and distance stabilization.
3. The adjustable-pitch propeller oil distribution sealing device according to claim 1, wherein the oil distribution sealing sleeve (1) comprises a left end annular oil groove (18), a right end annular oil groove (19) and an axial cooling oil hole (20);
the left end annular oil groove (18) is formed in the side wall of the left end of the oil distribution sealing sleeve (1), and the left end annular oil groove (18) is communicated with the cooling oil inlet (13); the right annular oil groove (19) is formed in the side wall of the right end of the oil distribution sealing sleeve (1), and the right annular oil groove (19) is communicated with the cooling oil outlet (15); the axial cooling oil hole (20) is arranged between the left end annular oil groove (18) and the right end annular oil groove (19), so that the left end annular oil groove (18) is communicated with the right end annular oil groove (19).
4. The oil distribution sealing device of the controllable pitch propeller as claimed in claim 3, wherein a plurality of axial cooling oil holes (20) are formed in the oil distribution sealing sleeve (1), and the plurality of axial cooling oil holes (20) are uniformly distributed in the oil distribution sealing sleeve (1).
5. The oil distribution sealing device of the controllable pitch propeller according to claim 2, wherein during the controllable pitch, the oil port (11) for forward turning or the oil port (12) for backward turning is supplied with pressure oil for the controllable pitch, the oil port (12) for backward turning or the oil port (11) for forward turning is used for the controllable pitch and the oil pressure in the central annular oil groove (17) is 0.2Mpa, and the first oil drain port (14) and the second oil drain port (16) have no pressure; oil liquid flows to the first oil drainage port (14), the second oil drainage port (16) and the central annular oil groove (17) at two ends after passing through the oil distribution sealing pair.
6. The oil distribution sealing device of the controllable pitch propeller according to claim 2, wherein in the process of stabilizing the pitch, the oil port (11) for forward driving and the oil port (12) for backward driving are simultaneously supplied with 0.5MPa of oil, the pressure of the oil in the central annular oil groove (17) is 0.2MPa, and the first oil drainage port (14) and the second oil drainage port (16) have no pressure; oil liquid flows to the first oil drainage port (14) and the second oil drainage port (16) at two ends and the central annular oil groove (17) after passing through the oil distribution sealing pair.
7. The oil sealing device for the controllable pitch propeller according to claim 1, wherein the oil sealing device for the controllable pitch propeller comprises an anti-rotation support (3) and a fixing support (4), an anti-rotation hole is formed in the outer wall of the oil sealing sleeve (1), one end of the anti-rotation support (3) is connected with the anti-rotation hole through an anti-rotation joint, and the other end of the anti-rotation support is connected with the fixing support (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110958990.XA CN113799952A (en) | 2021-08-20 | 2021-08-20 | Oil distribution sealing device with cooling function for controllable pitch propeller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110958990.XA CN113799952A (en) | 2021-08-20 | 2021-08-20 | Oil distribution sealing device with cooling function for controllable pitch propeller |
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