CN111878237B - Oil collecting ring and oil supply lubricating device under ring - Google Patents
Oil collecting ring and oil supply lubricating device under ring Download PDFInfo
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- CN111878237B CN111878237B CN202010746280.6A CN202010746280A CN111878237B CN 111878237 B CN111878237 B CN 111878237B CN 202010746280 A CN202010746280 A CN 202010746280A CN 111878237 B CN111878237 B CN 111878237B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
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Abstract
The utility model provides a receive oil ring and oil feeding lubricating arrangement under ring belongs to the lubricated technical field of fuel feeding. The oil collecting ring comprises a first annular baffle, a second annular baffle and a bent blade, and the bent blade is connected between the first annular baffle and the second annular baffle; one end of the curved blade is a blade tip, the other end of the curved blade is a blade root, the curved blade comprises a lubricating oil incidence section close to the blade tip and a lubricating oil collection section close to the blade root, the first speed direction of the lubricating oil on the inner surface of the lubricating oil incidence section is consistent with the tangential direction of the curved blade, and the first speed is the relative speed of the lubricating oil relative to the curved blade. In the oil receiving ring, the direction of the relative speed of the lubricating oil relative to the curved blade on the inner surface of the lubricating oil incidence section is consistent with the tangential direction of the curved blade, the flying-out proportion of the lubricating oil from the inner surface of the blade is reduced to a great extent, and the oil receiving efficiency of the oil receiving ring is improved.
Description
Technical Field
The utility model relates to an oil feeding lubrication technical field especially relates to an oil collecting ring and oil feeding lubrication device under the ring.
Background
The high-speed rolling bearing is an essential element in an aircraft engine system, and the rotating speed, the load and the temperature of a main shaft of an aircraft engine are continuously increased along with the continuous improvement of the performance of the aircraft engine. In order to ensure the stable work of the main shaft bearing under the conditions of high speed, high temperature and high load, a high-quality lubricating mode is a necessary foundation.
At present, the common lubrication modes of the main bearing of the aero-engine include injection lubrication and under-ring lubrication. In a typical radial under-ring lubrication structure, the center line of a nozzle is perpendicular (spatially perpendicular) to the center line of a main shaft, and lubricating oil sprayed from the nozzle is collected by an oil collecting ring and then supplied to an inner ring of a bearing under the action of centrifugal force. However, the oil collecting efficiency of the existing oil collecting ring is low, and needs to be further improved.
The above information disclosed in the background section is only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute prior art that is known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide an oil collecting ring, which is used for reducing the flying-out proportion of lubricating oil from the inner surface of a blade and improving the oil collecting efficiency of the oil collecting ring.
In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:
according to a first aspect of the present disclosure, there is provided an oil collecting ring comprising: a first annular baffle;
the second annular baffle is parallel to and opposite to the first annular baffle, and the second annular baffle and the first annular baffle are coaxially arranged; the oil collection device comprises a first annular baffle and a second annular baffle, wherein the first annular baffle is arranged on the inner surface of the oil inlet section, the second annular baffle is arranged on the inner surface of the oil inlet section, the first annular baffle is arranged between the first annular baffle and the second annular baffle, one end of the first annular baffle is a blade tip, the other end of the first annular baffle is a blade root, the first annular baffle comprises an oil inlet section close to the blade tip and an oil collection section close to the blade root, the first speed direction of the oil on the inner surface of the oil inlet section is consistent with the tangential direction of the first annular baffle, and the first speed is the relative speed of the oil to the first annular baffle.
In an exemplary embodiment of the present disclosure, the number of the curved blades is multiple, the multiple curved blades are circumferentially distributed and connected between the first annular baffle and the second annular baffle, and the tips of the curved blades are distributed in a staggered manner from the roots of the adjacent curved blades; and a lubricating oil inlet is formed between the blade tip of each bent blade and the blade root of the adjacent bent blade, and the first annular baffle, the second annular baffle and the bent blades form a lubricating oil channel.
In an exemplary embodiment of the present disclosure, an inner surface of the lubricant oil incident section satisfies a first relational expression
Wherein the content of the first and second substances,
the linear velocity of the curved blade at the collision point P where the lubricant is sprayed to the inner surface of the lubricant incident section,
omega is the angular velocity of rotation of the curved blade, r is the radius of the curve of the curved blade at point P,
is the absolute velocity of the oil at point P,
is the first speed of the oil at point P.
In an exemplary embodiment of the present disclosure, an inner surface of the lubricant oil incident section satisfies a second relational expression
Wherein (β, r) is a polar coordinate of a collision point P at which the oil is sprayed to the inner surface of the oil incident section, ω is a rotational angular velocity of the curved blade at the point P, VoilIs the absolute velocity of the oil at point P, d0C is a constant distance between the center line of the nozzle for spraying the lubricating oil and the center point of the curved blade.
In an exemplary embodiment of the disclosure, the first annular baffle inner ring and the second annular baffle inner ring are located on the same curved surface, the end surface of the blade root end of the curved blade and the inner ring of the first annular baffle are located on the same curved surface, and the first annular baffle, the second annular baffle and the inner surface of the lubricating oil collecting section enclose a lubricating oil collecting tank.
In an exemplary embodiment of the present disclosure, an oil dam is disposed on an inner surface of an end of the oil collecting section connected to the oil incident section, and a tip dam is disposed on an inner surface of a tip of the oil collecting section.
In an exemplary embodiment of the present disclosure, a thickness of an end of the oil collecting section connected to the oil incident section is smaller than a thickness of the oil incident section, and a junction of the oil collecting section and the oil incident section forms a boss which forms the oil dam.
In an exemplary embodiment of the disclosure, an oil outlet is formed at a position of the inner ring of the first annular baffle or/and the inner ring of the second annular baffle relative to the oil collecting groove.
In an exemplary embodiment of the present disclosure, the oil outlet includes a first oil outlet and a second oil outlet, the first oil outlet is disposed on the first annular baffle, the second oil outlet is disposed on the second annular baffle, and the first oil outlet and the second oil outlet are distributed in a staggered manner.
According to a second aspect of the present disclosure, an oil supply and lubrication apparatus under a ring is provided, including a main shaft, a bearing sleeved outside the main shaft, and the oil collection ring of the first aspect, wherein the first annular baffle inner ring and the second annular baffle inner ring form a main shaft accommodating cavity, the main shaft is disposed in the main shaft accommodating cavity, and the oil collection ring is disposed at one side of the bearing. .
According to a third aspect of the present disclosure, there is provided a method of improving oil collecting efficiency for an oil collecting ring including a first annular baffle, a second annular baffle, and a curved blade, the second annular baffle being parallel to and opposed to the first annular baffle, and the second annular baffle and the first annular baffle being coaxially disposed; the bent blade is connected between the first annular baffle and the second annular baffle, one end of the bent blade is a blade tip, the other end of the bent blade is a blade root, and the bent blade comprises a lubricating oil incidence section close to the blade tip and a lubricating oil collection section close to the blade root; and adjusting the curvature of the inner surface of the lubricating oil collecting section to ensure that when lubricating oil sprayed by an external nozzle is sprayed to the inner surface of the lubricating oil collecting section, the first speed direction of the lubricating oil on the inner surface of the lubricating oil collecting section is consistent with the tangential direction of the curved blade, and the first speed is the relative speed of the lubricating oil relative to the curved blade.
According to the oil collecting ring provided by the disclosure, the bent blade comprises the lubricating oil incidence section close to the blade tip and the lubricating oil collecting section close to the blade root, lubricating oil sprayed by an external nozzle can be sprayed to the inner surface of the lubricating oil incidence section, and then oil collection is completed in the lubricating oil collecting section. According to the oil collecting ring, when lubricating oil is sprayed to the inner surface of the lubricating oil incidence section, the direction of the relative speed of the lubricating oil on the inner surface of the lubricating oil incidence section relative to the curved blade is consistent with the tangential direction of the curved blade, so that most of the lubricating oil flows to the blade root part of the curved blade along the inner surface of the curved blade to complete oil collection, the flying-out proportion of the lubricating oil from the inner surface of the blade is reduced to a great extent, and the oil collecting efficiency of the oil collecting ring is improved.
Drawings
The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 is a schematic view of a radial oil collecting ring structure in the related art;
FIG. 2 is a schematic view of an under-ring oil supply in an exemplary embodiment of the present disclosure;
FIG. 3 is a schematic diagram of an oil catcher ring structure in an exemplary embodiment of the present disclosure;
FIG. 4 is a view from perspective A of the oil receiving ring of FIG. 3 in an exemplary embodiment of the present disclosure;
FIG. 5 is a sectional view taken in the direction B-B of the oil control ring of FIG. 4 in an exemplary embodiment of the present disclosure;
FIG. 6 is a C-C cross-sectional view of the oil control ring of FIG. 4 in an exemplary embodiment of the present disclosure;
FIG. 7 is a schematic view of a first annular baffle structure in an exemplary embodiment of the present disclosure;
FIG. 8 is a schematic view of a second annular baffle structure in an exemplary embodiment of the present disclosure;
FIG. 9 is a graphical illustration of the velocity profile of the lubricant at the inner surface of the curved blade in an exemplary embodiment of the present disclosure;
FIG. 10 is a graphical representation of the velocity profile of oil at the inner surface of a curved blade in another exemplary embodiment of the present disclosure.
The reference numerals of the main elements in the figures are explained as follows:
the radial oil collecting structure 20, the rail 21, the vane 22, the vane front end 22a, the under-ring oil supply device 10, the main shaft 200, the bearing 300, the oil collecting ring 100, the first annular baffle 110, the second annular baffle 120, the curved vane 130, the oil incident section 131, the oil collecting section 132, the oil dam 133, the end dam 134, the oil collecting groove 135, the first oil outlet 136, the second oil outlet 137, the oil inlet 140, and the oil passage 150.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure.
In the drawings, the thickness of regions and layers may be exaggerated for clarity. The same reference numerals denote the same or similar structures in the drawings, and thus detailed descriptions thereof will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the primary technical ideas of the disclosure.
When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/parts; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. The terms "first" and "second", etc. are used merely as labels, and are not limiting on the number of their objects.
In the related art, the under-ring lubrication method generally employs a radial oil receiving structure 20, and the conventional radial oil receiving structure 20, as shown in fig. 1, includes rails 21 on both sides and vanes 22 connected between the rails 21, and the inner surfaces of the vane front ends 22a are straight-line segments for receiving oil sprayed to the inner surfaces of the vanes 22. In this structure, the inner surface of the vane front end 22a that receives the oil is a straight line segment, and when the oil sprayed from the nozzle is sprayed onto the inner surface of the straight line segment, a certain angle exists between the oil and the inner surface of the straight line segment of the vane 22 in the relative speed direction of the oil at the spraying point with respect to the vane 22, and the angle changes with the rotation of the vane 22, so that the oil sprayed onto the vane 22 easily flies off from the inner surface of the vane 22, thereby reducing the oil collection efficiency of the vane 22.
In an exemplary embodiment of the present disclosure, there is provided an oil collecting ring 100 including: a first annular baffle 110; a second annular baffle 120, the second annular baffle 120 being parallel to and opposed to the first annular baffle 110, and the second annular baffle 120 and the first annular baffle 110 being coaxially disposed; the cambered vane 130 is connected between the first annular baffle 110 and the second annular baffle 120, one end of the cambered vane 130 is a vane tip, the other end of the cambered vane 130 is a vane root, the cambered vane comprises an oil incident section 131 close to the vane tip and an oil collecting section 132 close to the vane root, a first speed direction of the oil on the inner surface of the oil incident section 131 is consistent with a tangential direction of the cambered vane 130, and the first speed is a relative speed of the oil with respect to the cambered vane 130.
In the oil collecting ring provided by the present disclosure, the curved blade 130 includes an oil incident section 131 near the blade tip and an oil collecting section 132 near the blade root, and oil sprayed from an external nozzle may be sprayed to an inner surface of the oil incident section 131, and then oil collection is completed in the oil collecting section 132. In the present disclosure, when the lubricant is sprayed onto the inner surface of the lubricant incident section 131, the direction of the relative speed of the lubricant at the inner surface of the lubricant incident section 131 with respect to the curved blade 130 is consistent with the tangential direction of the curved blade 130, so that most of the lubricant flows to the blade root of the curved blade 130 along the inner surface of the curved blade 130 to complete oil collection, and the proportion of the lubricant flying out of the inner surface of the blade is reduced to a great extent, thereby improving the oil collection efficiency of the oil collection ring of the present disclosure.
The oil collecting ring 100 and the oil supply device 10 under the ring using the oil collecting ring 100 provided in the exemplary embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.
As shown in fig. 2, the oil collecting ring 100 provided by the present disclosure may be used for the oil supply device 10 under the ring. In the exemplary embodiment of the present disclosure, the under-ring oil supply device 10 includes a main shaft 200, a bearing 300, and an oil collecting ring 100. The oil receiving ring 100 and the bearing 300 are sleeved outside the main shaft 200, the oil receiving ring 100 is arranged on one side of the bearing 300, and the oil receiving ring 100 can synchronously rotate with the main shaft 200. The lubricant is ejected at a constant speed through a nozzle, collected by the oil collecting ring 100, and then flows into the gap between the main shaft 200 and the bearing 300, and is supplied to the inner ring of the bearing 300 by the centrifugal force.
As shown in fig. 3 to 6, in the exemplary embodiment of the present disclosure, the oil collecting ring 100 includes a first annular baffle 110, a second annular baffle 120, and a plurality of curved blades 130, the second annular baffle 120 is parallel to and opposite to the first annular baffle 110, the second annular baffle 120 and the first annular baffle 110 are coaxially disposed, the number of the curved blades 130 is plural, and the plurality of curved blades 130 are circumferentially distributed and connected between the first annular baffle 110 and the second annular baffle 120. It should be noted that the sizes of the inner and outer rings of the first annular baffle 110 and the second annular baffle 120 are not limited, and in practical implementation, the sizes of the inner rings of the first annular baffle 110 and the second annular baffle 120 need to be set according to the diameter of the spindle 200, and in general, the sizes of the inner rings of the first annular baffle 110 and the second annular baffle 120 are the same. In the present disclosure, when the oil collecting ring 100 is used in the under-ring oil supply device 10, the inner ring of the first annular baffle 110 and the inner ring of the second annular baffle 120 form a main shaft accommodating cavity, the main shaft 200 is disposed in the main shaft accommodating cavity, and the oil collecting ring 100 is disposed on one side of the bearing 300.
As shown in fig. 3 to fig. 6, the number of the curved blades 130 is multiple, the curved blades 130 are circumferentially distributed and connected between the first annular baffle 110 and the second annular baffle 120, one end of each curved blade 130 is a blade tip, the other end of each curved blade 130 is a blade root, and the blade tips of the curved blades 130 are distributed in a staggered manner with the blade roots of the adjacent curved blades 130. The tip of the curved blade 130 and the root of the adjacent curved blade 130 form an oil inlet 140 therebetween, and the first annular baffle 110, the second annular baffle 120 and the curved blade 130 form an oil passage 150. When the oil is injected into the oil passage 150 through the oil inlet 140, a first velocity direction of the oil at the inner surface of the curved vane 130 coincides with a tangential direction of the curved vane 130, and the first velocity is a relative velocity of the oil with respect to the curved vane 130. In the actual oil collecting process, the oil collecting ring 100 is in a rotating state. After being sprayed at a certain speed through the nozzle, the oil is sprayed to the inner surface of the curved blade 130, at this time, the curved blade 130 has a first absolute speed, the oil sprayed to the inner surface of the curved blade 130 has a second absolute speed, and the first speed of the oil sprayed to the inner surface of the curved blade 130, that is, the relative speed with respect to the curved blade 130, is a combined speed of the first absolute speed and the second absolute speed, and the direction of the combined speed is consistent with the tangential direction of the curved blade 130.
As shown in fig. 5, 6, 9, and 10, in an exemplary embodiment of the present disclosure, the tip end of the curved blade 130 is connected to the outer rings of the first and second ring baffles 110 and 120, and the root end of the curved blade 130 is connected to the inner rings of the first and second ring baffles 110 and 120. It should be noted that the tip end of the curved blade 130 may not be connected to the outer rings of the first annular baffle 110 and the second annular baffle 120, but it should be ensured that the tip of the curved blade 130 and the root of the adjacent curved blade 130 are distributed in a staggered manner, so that a gap is left between the tip and the root of the adjacent curved blade 130, and the oil passage 150 is formed.
In the disclosure, both the inner surface and the outer surface of the oil incident section 131 are curved surfaces. As shown in fig. 9 and 10, in the exemplary embodiment of the present disclosure, the inner surface of the oil incident section 131 satisfies the following first relation:
wherein the content of the first and second substances,
in order to obtain a linear velocity of the curved blade 130 at the collision point P where the lubricant is sprayed to the inner surface of the lubricant incident section 131,
ω is the angular velocity of rotation of the curved blade 130, r is the radius of curvature of the curved blade 130 at point P,
is the absolute velocity of the oil at point P,
is the first speed of the oil at point P.
In an exemplary embodiment of the present disclosure, a velocity composition diagram when the lubricant is sprayed onto the inner surface of the lubricant incident section 131 is shown in fig. 9, where O is the center of the curved blade 130; the polar coordinates of the collision point P are (β, r); ω is the angular rotational velocity of the curved blade 130 at point P; d0Is the center line of the nozzleThe distance d from the center point O of the curved blade 130 to the nozzle axis is a distance d from the center point O of the curved blade 130 because the nozzle is stationary0Can be considered as a constant.
As a result of this, it is possible to,
according to the relation of polar coordinate tangent lines, there are
As shown, has psi of 90-alpha, thus
Namely, it is
As can be seen from the figure 9 of the drawings,
as can be seen from FIG. 9, d0Rsin θ is a constant, then
Substituting cos theta and tan theta into equation (1), and integrating to obtain:
thereby obtaining a curved blade 130 whose inner surface satisfies the following relational expression (2)
In the formula, C1Is constant, for a given curved blade 130 inner surface initiation point P0Polar coordinate is (beta)0，r0) Then C is1Can be represented by the following formula:
in another exemplary embodiment of the present disclosure, a velocity composition diagram when the lubricant is sprayed on the inner surface of the lubricant incident section 131 is shown in fig. 10, and by using the same processing method as above, the inner surface of the lubricant incident section 131 satisfies the following relation (4):
in the formula, C2Is constant, for a given curved blade 130 inner surface initiation point P0Polar coordinate is (beta)0，r0) Then C is2Can be represented by the following formula:
combining relation (2) and relation (4), the inner surface of the lubricant oil incident section 131 satisfies the following second relation:
where (β, r) is a polar coordinate of a collision point P at which the lubricant is sprayed onto the inner surface of the lubricant incident section 131, ω is a rotational angular velocity of the curved blade 130 at the point P, VoilAbsolute speed of oil at point P, d0C is a constant distance from the center line of the nozzle for injecting the lubricant to the center point of the curved vane 130.
In particular, when d0When 0, the second relation maySo as to simplify as:
the inner surface of the oil incident section 131 satisfies the second relation, and the relation satisfied by the outer surface of the oil incident section 131 may be obtained by offsetting the second relation, and the specific process will not be described in detail.
As shown in fig. 3, 5 and 6, the inner ring of the first annular baffle 110 and the inner ring of the second annular baffle 120 are located on the same curved surface, and the end surface of the blade root of the curved blade 130 and the inner ring of the first annular baffle 110 are located on the same curved surface. The end surface of the root end of the curved blade 130 and the inner rings of the two annular baffles (the first annular baffle 110 and the second annular baffle 120) are located on the same curved surface, and when the spindle 200 is sleeved on the inner rings of the two annular baffles, the end surface of the root end of the curved blade 130 is in close contact with the spindle 200.
The curved blade 130 includes an oil incident section 131 near the tip portion and an oil collecting section 132 near the root portion, and the first annular baffle 110, the second annular baffle 120 and the inner surface of the oil collecting section 132 enclose an oil collecting groove 135. In exemplary embodiments of the present disclosure, the inner surface of the oil collection section 132 is curved. After entering the oil entrance section 131, the oil moves along the inner surface of the curved blade 130 to the oil collection section 132, and is collected in the oil collection tank 135. As shown in fig. 5 and 6, in the exemplary embodiment of the present disclosure, an inner surface of one end of the oil collecting section 132 connected to the oil incident section 131 is provided with an oil dam 133, and an inner surface of a distal end of the oil collecting section 132 is provided with a distal end dam 134. The oil blocking dam 133 is disposed at one end of the lubricating oil collecting section 132 connected to the lubricating oil incident section 131, that is, one end of the lubricating oil collecting groove 135 away from the blade root of the curved blade 130, and the oil blocking dam 133 is disposed to effectively prevent the lubricating oil entering the lubricating oil collecting groove 135 from being thrown out of the lubricating oil collecting groove 135 under the action of centrifugal force, thereby improving the oil collecting efficiency. It should be noted that, in the present disclosure, the specific shape of the oil dam 133 is not limited as long as the oil dam 133 protrudes out of the inner surface of the oil collection section 132 to prevent the oil from being thrown out of the oil collection section 132, and specifically, the oil dam 133 may be a three-dimensional structure with a cross section of a triangle, a rectangle, a square, an ellipse, or an irregular polygon. In the exemplary embodiment of the present disclosure, a thickness of one end of the oil collection section 132 connected to the oil incident section 131 is smaller than a thickness of the oil incident section 131, and a boss is formed at a connection portion of the oil collection section 132 and the oil incident section 131, and the boss forms the oil dam 133.
As shown in fig. 5 to 8, the inner ring of the first annular baffle 110 or/and the inner ring of the second annular baffle 120 has/have an oil outlet at a position corresponding to the oil collecting groove 135. The lubricant in the lubricant collecting tank 135 flows into the gap between the main shaft 200 and the bearing 300 through the lubricant outlet, and then is supplied to the inner ring of the bearing 300 by the centrifugal force. In some embodiments of the present disclosure, the oil collecting section 132 where the curved blade 130 is provided is inclined toward the side where the oil outlet is provided, so that the oil can more easily flow from the oil outlet to the gap between the main shaft 200 and the bearing 300 under the gravity. It should be noted that this embodiment is only a preferred embodiment, and those skilled in the art can provide other arrangements according to the theory and the related art, as long as the probability or speed of the oil flowing from the oil outlet to the gap between the main shaft 200 and the bearing 300 can be increased. Of course, the present disclosure also includes a technical solution that the oil collecting section 132 of the curved blade 130 is not inclined to the side where the oil outlet is provided, and the technical solution may also make the oil flow from the oil outlet to the gap between the main shaft 200 and the bearing 300 and supply to the bearing.
In the present disclosure, the number of the oil collecting grooves 135 is plural, and specifically, is equal to the number of the curved blades 130. The oil outlet may be disposed at a position of the first annular baffle 110 corresponding to the oil collection groove 135, and may also be disposed at a position of the second annular baffle 120 corresponding to the oil collection groove 135. In the present disclosure, the number of the lubricant collecting tanks 135 is plural, and the lubricant outlets on the first annular baffle 110 and the lubricant outlets on the second annular baffle 120 may be disposed in the same lubricant collecting tank 135, or may be disposed in different lubricant collecting tanks 135. In the exemplary embodiment of the present disclosure, the oil outlets include a first oil outlet 136 and a second oil outlet 137, the first oil outlet 136 is disposed on the first annular baffle 110, the second oil outlet 137 is disposed on the second annular baffle 120, and the first oil outlet 136 and the second oil outlet 137 are distributed in a staggered manner. For example, in the present disclosure, there are a plurality of the oil collection tanks 135, wherein a portion of the oil collection tanks 135 is correspondingly provided with the first oil outlet 136, and the other portion of the oil collection tanks 135 is correspondingly provided with the second oil outlet 137. Specifically, as shown in fig. 5 and fig. 6, in the exemplary embodiment, the number of the oil collecting tanks 135 is multiple, one of the oil collecting tanks 135 is provided with the first oil outlet 136, and the other two oil collecting tanks 135 are provided with the second oil outlet 137, and in this embodiment, the first oil outlet 136 and the second oil outlet 137 are distributed in a staggered manner (as shown in fig. 3). The first lubricating oil outlet 136 supplies oil to the left lubricating point, and the second lubricating oil outlet 137 supplies oil to the right lubricating point, so that double-side oil supply is realized. In addition, the number of the curved vanes 130 is not limited in the present disclosure, and therefore, the number of the oil collecting grooves 135 is also not limited, and accordingly, the number of the oil outlets is also not limited, and in practice, the positions and the numbers of the first oil outlet 136 and the second oil outlet 137 are determined, and may be set by those skilled in the art according to the requirements of the oil flow distribution and the lubrication points.
The present disclosure also provides a method for improving oil collecting efficiency, which is used for the oil collecting ring 100, the oil collecting ring 100 comprises a first annular baffle 110, a second annular baffle 120 and a curved blade 130, the second annular baffle 120 is parallel and opposite to the first annular baffle 110, and the second annular baffle 120 and the first annular baffle 110 are coaxially arranged; the curved blade 130 is connected between the first annular baffle 110 and the second annular baffle 120, one end of the curved blade 130 is a blade tip, the other end of the curved blade 130 is a blade root, and the curved blade includes a lubricating oil incident section 131 near the blade tip and a lubricating oil collecting section 132 near the blade root; the curvature of the inner surface of the curved vane 130 is adjusted so that when the oil sprayed from the external nozzle is sprayed onto the inner surface of the oil incident section 131, the first speed direction of the oil on the inner surface of the oil incident section 131 is the same as the tangential direction of the curved vane 130, and the first speed is the relative speed of the oil with respect to the curved vane 130. In the method, when the lubricating oil is sprayed to the inner surface of the curved blade 130, the direction of the relative speed of the lubricating oil on the inner surface of the lubricating oil incidence section 131 relative to the curved blade 130 is consistent with the tangential direction of the curved blade 130, so that most of the lubricating oil flows to the blade root part of the curved blade 130 along the inner surface of the curved blade 130 to complete oil collection, the flying-out proportion of the lubricating oil from the inner surface of the blade is reduced to a great extent, and the oil collection efficiency is improved.
It is to be understood that the disclosure is not limited in its application to the details of construction and the arrangements of the components set forth in the specification. The present disclosure is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications are within the scope of the present disclosure. It should be understood that the disclosure disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present disclosure. The embodiments of this specification illustrate the best mode known for carrying out the disclosure and will enable those skilled in the art to utilize the disclosure.
Claims (10)
1. An oil collecting ring is characterized in that: comprises that
A first annular baffle;
the second annular baffle is parallel to and opposite to the first annular baffle, and the second annular baffle and the first annular baffle are coaxially arranged;
the bent blade is connected between the first annular baffle and the second annular baffle, one end of the bent blade is a blade tip, the other end of the bent blade is a blade root, and the bent blade comprises a lubricating oil incidence section close to the blade tip and a lubricating oil collection section close to the blade root;
and a first speed direction of the lubricating oil on the inner surface of the lubricating oil incidence section is consistent with the tangential direction of the curved blade, and the first speed is the relative speed of the lubricating oil relative to the curved blade.
2. The oil collecting ring according to claim 1, characterized in that: the inner surface of the lubricating oil incident section satisfies the following first relational expression
Wherein the content of the first and second substances,
the linear velocity of the curved blade at the collision point P where the lubricant is sprayed to the inner surface of the lubricant incident section,
omega is the angular velocity of rotation of the curved blade, r is the radius of the curve of the curved blade at point P,
is the absolute velocity of the oil at point P,
is the first speed of the oil at point P.
3. The oil collecting ring according to claim 1, characterized in that: the inner surface of the lubricating oil incident section satisfies the following second relational expression
Wherein (β, r) is a polar coordinate of a collision point P at which the oil is sprayed to the inner surface of the oil incident section, ω is a rotational angular velocity of the curved blade at the point P, VoilIs the absolute velocity of the oil at point P, d0C is a constant distance between the center line of the nozzle for spraying the lubricating oil and the center point of the curved blade.
4. The oil collecting ring according to claim 1, characterized in that: the inner ring of the first annular baffle and the inner ring of the second annular baffle are positioned on the same curved surface, the end surface of the tail end of the blade root of the bent blade and the inner ring of the first annular baffle are positioned on the same curved surface, and the first annular baffle, the second annular baffle and the inner surface of the lubricating oil collecting section enclose a lubricating oil collecting tank.
5. The oil collection ring according to claim 4, wherein: the lubricating oil collecting section is connected with the lubricating oil incidence section, an oil blocking dam is arranged on the inner surface of one end of the lubricating oil collecting section, and a tail end dam is arranged on the inner surface of the tail end of the lubricating oil collecting section.
6. The oil collection ring according to claim 5, characterized in that: the thickness of one end of the lubricating oil collecting section, which is connected with the lubricating oil incidence section, is smaller than that of the lubricating oil incidence section, a boss is formed at the joint of the lubricating oil collecting section and the lubricating oil incidence section, and the boss forms the oil blocking dam.
7. The oil collection ring according to claim 4, wherein: and a lubricating oil outlet is formed in the position, corresponding to the lubricating oil collecting groove, of the inner ring of the first annular baffle or/and the inner ring of the second annular baffle.
8. The oil collection ring according to claim 7, wherein the oil outlet includes a first oil outlet and a second oil outlet, the first oil outlet is disposed on the first annular baffle, the second oil outlet is disposed on the second annular baffle, and the first oil outlet and the second oil outlet are distributed in a staggered manner.
9. The utility model provides an oil supply lubricating arrangement under ring which characterized in that: the oil collecting ring comprises a main shaft, a bearing sleeved outside the main shaft and the oil collecting ring according to any one of claims 1 to 8, wherein a main shaft accommodating cavity is formed by the first annular baffle inner ring and the second annular baffle inner ring, the main shaft is arranged in the main shaft accommodating cavity, and the oil collecting ring is arranged on one side of the bearing.
10. A method for improving oil collecting efficiency is used for an oil collecting ring, and is characterized in that:
the oil collecting ring comprises a first annular baffle, a second annular baffle and a bent blade, wherein the second annular baffle is opposite to the first annular baffle in parallel, and the second annular baffle and the first annular baffle are coaxially arranged; the bent blade is connected between the first annular baffle and the second annular baffle, one end of the bent blade is a blade tip, the other end of the bent blade is a blade root, and the bent blade comprises a lubricating oil incidence section close to the blade tip and a lubricating oil collection section close to the blade root;
and adjusting the curvature of the inner surface of the lubricating oil collecting section to ensure that when lubricating oil sprayed by an external nozzle is sprayed to the inner surface of the lubricating oil collecting section, the first speed direction of the lubricating oil on the inner surface of the lubricating oil collecting section is consistent with the tangential direction of the curved blade, and the first speed is the relative speed of the lubricating oil relative to the curved blade.
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| CN202010746280.6A CN111878237B (en) | 2020-07-29 | 2020-07-29 | Oil collecting ring and oil supply lubricating device under ring |
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| CN202010746280.6A CN111878237B (en) | 2020-07-29 | 2020-07-29 | Oil collecting ring and oil supply lubricating device under ring |
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| CN111878237B true CN111878237B (en) | 2021-11-16 |
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