CN117723125A - Complex cavity oil spray hole flow detection device - Google Patents
Complex cavity oil spray hole flow detection device Download PDFInfo
- Publication number
- CN117723125A CN117723125A CN202311619581.2A CN202311619581A CN117723125A CN 117723125 A CN117723125 A CN 117723125A CN 202311619581 A CN202311619581 A CN 202311619581A CN 117723125 A CN117723125 A CN 117723125A
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- Prior art keywords
- oil
- hole
- cavity
- spray hole
- detection device
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- 239000007921 spray Substances 0.000 title claims abstract description 44
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 239000003921 oil Substances 0.000 claims abstract description 236
- 238000002347 injection Methods 0.000 claims abstract description 43
- 239000007924 injection Substances 0.000 claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 238000005507 spraying Methods 0.000 claims abstract description 33
- 239000010687 lubricating oil Substances 0.000 claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 4
- 239000010439 graphite Substances 0.000 claims abstract description 4
- 238000005461 lubrication Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 description 13
- 238000007789 sealing Methods 0.000 description 13
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- General Details Of Gearings (AREA)
Abstract
The invention belongs to the technical field of lubricating oil metering, and discloses a complex cavity oil spray hole flow detection device, wherein after the detection device is installed in an accessory transmission case from an installation seat where an oil spray hole of the accessory transmission case is located, an upper oil spray hole of graphite of the accessory transmission case and a lower oil spray hole of a bearing are isolated by the detection device, the upper cavity and the lower cavity are respectively isolated, the upper cavity is communicated with the upper oil spray hole, and lubricating oil sprayed by the upper oil spray hole is led out; the lower cavity is communicated with the lower oil spraying hole and leads the lubricating oil sprayed out of the lower oil spraying hole to the flow metering device. According to the invention, when one oil injection hole in two adjacent oil injection holes detects the gap flow in a narrow cavity, the oil of the other oil injection hole is led into the cavity of the accessory transmission casing, so that the accuracy of oil flow detection is ensured, the errors caused by inflow of other oil injection are avoided, the phenomenon that the bearing is abnormally worn due to insufficient lubrication is avoided, and the performance reliability of the accessory transmission device is improved.
Description
Technical Field
The invention belongs to the technical field of lubricating oil metering, relates to a lubricating oil flow detection device, and in particular relates to a complex cavity oil spray hole flow detection device.
Background
The accessory transmission case is a key component of the aeroengine, is one of high-performance components of the aeroengine, and is used as a kinetic energy conversion device to drive the engine and main accessories of an aircraft, such as a starting system, a fuel system, a lubricating oil system, a hydraulic system and the like to normally operate, and the performance of the accessory transmission case directly influences the operation of the aeroengine. In order to ensure the service performance of the accessory transmission case, the flow of each oil spray hole needs to be detected before assembly, and the flow after the gap is checked, namely the actual flow passing through the gap between the bearing retainer and the inner ring is emphasized. In complicated die cavity, namely when there are two adjacent fuel injection holes in narrow and small space, as shown in fig. 1, vertical distance between A fuel injection hole and B fuel injection hole is about 4mm, the contained angle between two fuel injection holes is 50 °, when B fuel injection hole needs to detect the seam flow, current detection device can't drain the oil flow that adjacent A fuel injection hole sprays, the lubricating oil of A fuel injection hole can spray in current detection device, lead to flow data to have very big error, if carry out shutoff with adjacent A fuel injection hole, though can avoid the condition that the lubricating oil mixes, but the accessory transmission device complete machine flow under this state and the pressure in the cavity can change correspondingly, the flow data and the actual state of fuel injection hole are inconsistent, can't regard as the reference value, the seam flow that crosses of B fuel injection hole detects inaccurately, will produce the influence of inestimable quantity to the bearing that B fuel injection hole, the bearing can produce abnormal wear because of lubrication deficiency.
Disclosure of Invention
In order to solve the problems, the invention provides a complex cavity oil spray hole flow detection device which can improve the access precision of the oil spray hole gap flow and avoid abnormal abrasion faults of a bearing caused by too low oil flow.
The technical scheme of the invention is as follows:
after the detection device is installed into the accessory transmission case from the installation seat of the oil injection hole of the accessory transmission case, the detection device isolates an upper oil injection hole of the accessory transmission case for graphite from a lower oil injection hole of a bearing, the upper cavity and the lower cavity are respectively isolated, the upper cavity is communicated with the upper oil injection hole, and the lubricating oil sprayed by the upper oil injection hole is led out; the lower cavity is communicated with the lower oil spraying hole and leads the lubricating oil sprayed out of the lower oil spraying hole to the flow metering device.
Further, the oil receiving cover comprises an oil receiving cover, the top of the oil receiving cover is of a disc structure, the top of the oil receiving cover is aligned with the positions of the two oil spraying holes, an oil distributing surface is arranged between the upper oil spraying hole and the lower oil spraying hole, and oil sprayed out of the upper oil spraying hole is sprayed into an inner cavity of the oil receiving cover and flows downwards.
Further, the whole oil receiving cover is slightly higher than the upper oil spraying hole, the outer diameter of the oil receiving cover is slightly smaller than the inner diameter of the accessory transmission casing mounting seat where the upper oil spraying hole is located, an oil flow channel is reserved at the position, corresponding to the injection position of the upper oil spraying hole, of the oil receiving cover, and the oil separating surface is the bottom surface of the oil flow channel.
Further, the inner side of the oil receiving cover is a 45-degree conical surface, and the center of the oil receiving cover is a through hole with the diameter of 30 mm.
Further, the oil-receiving device further comprises a target plate, wherein the target plate is arranged below the oil-receiving cover, the outer cylindrical surface of the upper part of the target plate is in precise fit with the inner diameter of the accessory transmission casing mounting seat where the oil spray hole is, the outer diameter of the outer cylindrical surface of the lower part of the target plate is provided with a boss, and the boss is used for limiting and connecting the accessory transmission casing mounting seat; the center of the target plate is provided with a drainage hole which is communicated with a through hole in the center of the oil cover.
Further, the bottom of the drainage hole is closed, at least two oil guide holes are radially arranged at the lower part of the drainage hole, and the lubricating oil entering in the oil receiving cover enters the drainage hole in the center of the target plate and then is dispersed into the gear box of the accessory transmission case through the at least two oil guide holes.
Further, a target slit is arranged on the upper end face of the target plate corresponding to the position of the lower oil spraying hole, the size and the spatial position of the gap between the target slit and the bearing inner ring and the retainer are consistent, and lubricating oil of the lower oil spraying hole enters the inner cavity of the target plate through the target slit; the inner cavity is not communicated with the drainage holes, and the three oil guide holes do not shield the target seam in space, so that the lubricating oil passing through the target seam is ensured not to leak and completely enter the inner cavity of the target plate under the condition of no obstacle.
Further, the bottom of the target plate is connected with an oil receiving disc, the top of the oil receiving disc is communicated with the inner cavity of the target plate, the lower bottom surface of the inner cavity of the oil receiving disc is a conical surface of 160 degrees, and the bottom of the inner cavity of the oil receiving disc is communicated with the flow metering device.
The invention has the following advantages:
1. according to the invention, in a narrow cavity, when one oil injection hole in two adjacent oil injection holes detects the gap flow, the oil of the other oil injection hole is led into the cavity of the accessory transmission case, so that the accuracy of oil flow detection is ensured, the introduction error of other oil injection is avoided, the phenomenon that the bearing is abnormally worn due to insufficient lubrication is avoided, and the performance reliability of the accessory transmission device is improved;
2. the invention completely simulates the size and the spatial position of the gap between the bearing inner ring and the retainer for design, and can ensure the consistency with the truly assembled bearing.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and that other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of a target plate
The oil receiving device comprises a 1-oil receiving cover, a 2-sealing rubber gasket, a 3-screw, a 4-target plate, a 5-sealing gasket, a 6-oil receiving disc, a 7-copper sealing gasket, an 8-oil receiving nozzle, a 9-clip, a 10-hose, an A-upper oil spraying hole and a B-lower oil spraying hole.
Detailed Description
This section is an embodiment of the present invention for explaining and explaining the technical solution of the present invention. Embodiments of the invention and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate directions or positional relationships based on the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or case in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "first," "second," etc. may explicitly or implicitly include more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the mechanical connection can be realized, and the point connection can be realized; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
Example 1:
after the detection device is installed into the accessory transmission case from the installation seat of the oil injection hole of the accessory transmission case, the detection device isolates an upper oil injection hole A of graphite of the accessory transmission case from a lower oil injection hole B of a bearing, the upper cavity and the lower cavity are respectively isolated, the upper cavity is communicated with the upper oil injection hole A, and lubricating oil sprayed by the upper oil injection hole A is led out; the lower cavity is communicated with the lower oil spraying hole B and guides the lubricating oil sprayed by the lower oil spraying hole B to the flow metering device.
The oil receiving cover comprises an oil receiving cover 1, wherein the top of the oil receiving cover 1 is of a disc structure, the top of the oil receiving cover 1 is provided with an oil distributing surface aligned with the positions of two oil spraying holes, the oil distributing surface is arranged between an upper oil spraying hole A and a lower oil spraying hole B, and oil sprayed out of the upper oil spraying hole A is sprayed into an inner cavity of the oil receiving cover 1 and flows downwards.
The whole oil receiving cover 1 is slightly higher than the upper oil spraying hole A, the outer diameter of the oil receiving cover 1 is slightly smaller than the inner diameter of an accessory transmission casing mounting seat where the upper oil spraying hole is located, an oil flow channel is reserved at the position, corresponding to the injection position of the upper oil spraying hole A, of the oil receiving cover 1, and the oil separating surface is the bottom surface of the oil flow channel.
The inner side of the oil receiving cover 1 is a 45-degree conical surface, and the center is a through hole with the diameter of 30 mm.
The oil receiving cover 1 also comprises a target plate 4, the target plate 4 is arranged below the oil receiving cover 1, the outer cylindrical surface of the upper part of the target plate 4 is precisely matched with the inner diameter of an accessory transmission casing mounting seat where the oil spray hole is positioned, the outer diameter of the outer cylindrical surface of the lower part of the target plate 4 is provided with a boss, and the boss is used for limiting and connecting an accessory transmission case mounting seat; the center of the target plate 4 is provided with a drainage hole which is communicated with a through hole in the center of the oil cover 1.
The bottom of the drainage hole is closed, at least two oil guide holes are radially arranged at the lower part of the drainage hole, and the lubricating oil entering in the oil receiving cover 1 enters the drainage hole in the center of the target plate 4 and then is dispersed into a gear box of the accessory transmission casing through the at least two oil guide holes.
The upper end face of the target plate 4 is provided with a target slit corresponding to the position of the lower oil spraying hole B, the size and the spatial position of the gap between the target slit and the bearing inner ring and the retainer are consistent, and the lubricating oil of the lower oil spraying hole enters the inner cavity of the target plate 4 through the target slit; the inner cavity is not communicated with the drainage holes, and the three oil guide holes do not shield the target seam in space, so that the lubricating oil passing through the target seam is ensured not to leak and completely enter the inner cavity of the target plate 4 under the condition of no obstacle.
The bottom of the target plate 4 is connected with an oil receiving disc 6, the top of the oil receiving disc 6 is communicated with the inner cavity of the target plate 4, the lower bottom surface of the inner cavity of the oil receiving disc 6 is a conical surface of 160 degrees, and the bottom of the inner cavity of the oil receiving disc 6 is communicated with the flow metering device.
Example 2:
the utility model provides a complicated die cavity fuel sprayer flow detection device, includes that connect oily lid 1, sealed cushion 2, screw 3, target plate 4, sealed pad 5, connect food tray 6, copper sealed pad 7, connect glib 8, clip 9, hose 10. The oil receiving cover 1 and the sealing rubber cushion 2 are screwed and fixed on the target plate 4 through the screw 3, the whole oil receiving cover 1 is slightly higher than an upper oil spray hole (the upper oil spray hole is an oil spray hole which does not detect the flow of the passing seam), the outer diameter of the oil receiving cover is slightly smaller than the inner diameter of an installation seat where the upper oil spray hole is located, the oil sprayed by the upper oil spray hole can be prevented from being sprayed out, an oil flow channel is reserved at the position corresponding to the spraying position of the upper oil spray hole of the oil receiving cover 1, the oil sprayed by the upper oil spray hole can be introduced into the inner cavity of the oil receiving cover 1, the inner side of the oil receiving cover 1 is a 45-degree conical surface, the center is a through hole with phi 30mm, the 45-degree conical surface of the inner side of the oil receiving cover can assist the introduced oil flow into the through hole in the center, and the sealing rubber cushion 2 ensures that the oil does not leak to the outer cavity.
The target plate 4 is a special-shaped cavity, the outer cylindrical surface of the upper part of the target plate is precisely matched with the inner diameter of the mounting seat where the oil spraying hole is positioned, and the target plate 4 is fixed on the mounting seat through the protruding end surface; the center of the oil receiving cover is a hole with the diameter of 20mm (the bottom end surface is not penetrated), three holes with the diameter of 12mm are uniformly distributed along the center hole, the three holes are through holes along the radial direction, the oil injected into the oil receiving cover 1 enters the hole with the diameter of 20mm at the center of the target plate 4, then the oil is dispersed into a gear box of the accessory transmission case through the 3 oil guide holes with the diameter of 12mm, the function of leading out the oil injected by the upper oil injection hole is realized, the oil of the upper oil injection hole is prevented from entering a detection device of the lower oil injection hole, the upper end surface of the target plate 4 is designed according to the theoretical size of the bearing, namely, the gap size and the spatial position between the inner ring of the bearing and the retainer are completely simulated, the consistency with a real assembly bearing can be ensured, the oil of the lower oil injection hole enters the inner cavity of the target plate 4 through the target gap, the inner cavity is not communicated with the cavity for taking the oil of the upper oil injection hole, and the three oil guide holes of the upper oil injection hole are not shielded in space, so that the oil passing through the target gap is prevented from leaking and completely enters the inner cavity of the target plate 4 under the condition of no obstacle.
After the oil receiving disc 6 and the sealing gasket 5 are matched with the internal thread on the inner side of the lower end face of the target plate 4 through the external thread of the oil receiving disc 6 and screwed up, the oil sprayed by the lower oil spray hole can be stored in a cavity formed by the oil receiving disc 6 and the target plate 4, the oil receiving nozzle 8 and the copper sealing gasket 7 are also fixed on the oil receiving disc 6 through threads, the lower bottom surface of the inner cavity of the oil receiving disc 6 is a conical surface of 160 degrees, the oil can automatically flow into the oil receiving nozzle 8 under the condition of self weight, zero storage of the oil is realized, zero leakage of the oil can be realized by the sealing gasket 5 and the copper sealing gasket 7, and finally the oil in the hose 10 fixed by the clamp 9 is used through barrel joint, namely the overseam flow of the lower oil spray hole.
When the oil receiving device is used, firstly, the sealing rubber cushion 2 is arranged above the target plate 4, the oil receiving cover 1 is fixed on the target plate 4 through the screw 3, the sealing gasket 5 is assembled on the end face of the oil receiving disc 6, the oil receiving disc 6 is screwed on the target plate 4 through threads, the copper sealing gasket 7 is mounted on the oil receiving nozzle 8, the oil receiving nozzle 8 is screwed on the oil receiving disc 6 through threads, and finally the hose 10 is fixed on the oil receiving nozzle 8 through the clip 9. When the oil flow is detected, after the tester is started, the oil is sprayed out through each oil spraying hole, the oil sprayed out from the upper oil spraying hole enters the inner cavity of the oil spraying hole through the channel of the oil receiving cover 1, and then flows into the inner cavity of the accessory transmission casing through the three oil guiding holes of the target plate 4; after the lubricating oil of the lower oil spray hole is sprayed out, the lubricating oil enters a sealing cavity formed by the target plate 4 and the oil receiving disc 6 through a target seam of the target plate 4 and flows out through a hose 10, the oil is taken out from a measuring cylinder at the outlet of the hose 10, so that the seam-passing lubricating oil quantity of the lower oil spray hole can be directly detected, the accuracy of lubricating oil flow detection is ensured, the errors caused by the inflow of other lubricating oil are avoided, and the performance reliability of the accessory transmission device is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think about various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered in the scope of the present invention.
Claims (8)
1. The device is characterized in that after the detection device is installed in an accessory transmission case from an installation seat where an oil injection hole of the accessory transmission case is located, an upper oil injection hole (A) of graphite of the accessory transmission case and a lower oil injection hole (B) of a bearing are isolated by the detection device, an upper cavity and a lower cavity are respectively isolated, the upper cavity is communicated with the upper oil injection hole (A), and lubricating oil sprayed by the upper oil injection hole (A) is led out; the lower cavity is communicated with the lower oil spraying hole (B) and guides the lubricating oil sprayed by the lower oil spraying hole (B) to the flow metering device.
2. The complex cavity oil spray hole flow detection device according to claim 1, comprising an oil receiving cover (1), wherein the top of the oil receiving cover (1) is of a disc structure, the top of the oil receiving cover (1) is provided with an oil separating surface aligned with the two oil spray holes, the oil separating surface is arranged between an upper oil spray hole (A) and a lower oil spray hole (B), and oil sprayed by the upper oil spray hole (A) is sprayed into an inner cavity of the oil receiving cover (1) and flows downwards.
3. The complex cavity oil spray hole flow detection device according to claim 2, wherein the oil receiving cover (1) is slightly higher than the upper oil spray hole (A) as a whole, the outer diameter of the oil receiving cover (1) is slightly smaller than the inner diameter of an accessory transmission case mounting seat where the upper oil spray hole is located, an oil flow channel is reserved at the position, corresponding to the injection position of the upper oil spray hole (A), of the oil receiving cover (1), and the oil distribution surface is the bottom surface of the oil flow channel.
4. A complex cavity oil spray hole flow detection device according to claim 3, characterized in that the inner side of the oil receiving cover (1) is a 45 DEG conical surface, and the center is a through hole with the diameter of 30 mm.
5. The complex cavity oil spray hole flow detection device according to claim 4 is characterized by further comprising a target plate (4), wherein the target plate (4) is arranged below the oil receiving cover (1), the outer cylindrical surface of the upper part of the target plate (4) is in precise fit with the inner diameter of an accessory transmission casing mounting seat where the oil spray hole is located, a boss is arranged on the outer diameter of the outer cylindrical surface of the lower part of the target plate (4), and the accessory transmission casing mounting seat is limited and connected by the boss; the center of the target plate (4) is provided with a drainage hole which is communicated with a through hole at the center of the oil cover (1).
6. The complex cavity oil spray hole flow detection device according to claim 5, wherein the bottom of the drainage hole is closed, at least two oil guide holes are radially arranged at the lower part of the drainage hole, and the lubricating oil entering in the oil receiving cover (1) enters the drainage hole in the center of the target plate (4) and then is dispersed into a gear box of the accessory transmission case through the at least two oil guide holes.
7. The complex cavity oil spray hole flow detection device according to claim 6, wherein the upper end surface of the target plate (4) is provided with a target slit corresponding to the position of the lower oil spray hole (B), the size and the spatial position of a gap between the target slit and the bearing inner ring and the retainer are consistent, and the lubricating oil of the lower oil spray hole enters the inner cavity of the target plate (4) through the target slit; the inner cavity is not communicated with the drainage holes, and the three oil guide holes do not shield the target seam in space, so that the lubricating oil passing through the target seam is ensured not to leak and completely enter the inner cavity of the target plate (4) under the condition of no obstacle.
8. The complex cavity oil spray hole flow detection device according to claim 7, wherein the bottom of the target plate (4) is connected with an oil receiving disc (6), the top of the oil receiving disc (6) is communicated with the inner cavity of the target plate (4), the lower bottom surface of the inner cavity of the oil receiving disc (6) is a conical surface with 160 degrees, and the bottom of the inner cavity of the oil receiving disc (6) is led to the flow metering device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311619581.2A CN117723125A (en) | 2023-11-29 | 2023-11-29 | Complex cavity oil spray hole flow detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311619581.2A CN117723125A (en) | 2023-11-29 | 2023-11-29 | Complex cavity oil spray hole flow detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117723125A true CN117723125A (en) | 2024-03-19 |
Family
ID=90207896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311619581.2A Pending CN117723125A (en) | 2023-11-29 | 2023-11-29 | Complex cavity oil spray hole flow detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117723125A (en) |
-
2023
- 2023-11-29 CN CN202311619581.2A patent/CN117723125A/en active Pending
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