CN216447885U - Lubricating oil tank assembly for aircraft engine - Google Patents

Abstract

The utility model relates to an aircraft engine, in particular to a lubricating oil tank assembly for an aircraft engine, which comprises a lubricating oil tank, wherein an oil outlet and an oil return port are arranged on the lubricating oil tank, a vent hole for communicating the inside of the lubricating oil tank with the atmosphere outside the lubricating oil tank is also arranged on the lubricating oil tank, and a pressure regulating mechanism is connected at the vent hole to ensure that the inside of the lubricating oil tank is communicated with the atmosphere outside the lubricating oil tank through the pressure regulating mechanism. The scheme solves the problem that the aircraft is difficult to continuously ascend at the high altitude of more than 6000 m by the aero-engine in the prior art, so that the ascending limit of the aircraft is seriously insufficient.

Description

Lubricating oil tank assembly for aircraft engine

Technical Field

The utility model relates to an aircraft engine, in particular to a lubricating oil tank assembly of the aircraft engine.

Background

The aircraft engine installed on the unmanned aerial vehicle and other aircrafts comprises an engine body, a fuel system, a heat dissipation system, an open type lubricating system and the like, wherein the engine body mainly comprises various mechanical transmission mechanisms. The open type lubricating system is a lubricating system capable of discharging gas mixed into lubricating oil due to piston blow-by into the external environment, and in the prior art, the gas mixed into the lubricating oil is discharged mainly by arranging a vent hole communicated with the external atmosphere on a lubricating oil tank. The aircraft engines of aircrafts such as high-altitude unmanned aerial vehicles are designed according to the use height above the altitude of 10000 meters, but in actual use, faults are easy to occur and the aircrafts are difficult to continue to rise after the flying height of the aircrafts such as the unmanned aerial vehicles exceeds the altitude of 6000 meters, so that the rise limit of the aircrafts is seriously insufficient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an aircraft engine to solve the problem that the aircraft engine in the prior art is difficult to continuously rise due to the fact that the aircraft engine is prone to faults when running at high altitude with the altitude of 6000 m or more, and further the rise limit of the aircraft is seriously insufficient.

In order to achieve the purpose, the basic scheme of the utility model provides a lubricating oil tank assembly for an aeroengine, which comprises a lubricating oil tank, wherein the lubricating oil tank is provided with an oil outlet and an oil return port, the lubricating oil tank is also provided with a vent hole for communicating the inside of the lubricating oil tank with the atmosphere outside the lubricating oil tank, and the vent hole is connected with a pressure regulating mechanism so that the inside of the lubricating oil tank is communicated with the atmosphere outside the lubricating oil tank through the pressure regulating mechanism.

The beneficial effect of this basic scheme lies in: compared with the prior art, the aircraft engine adopting the scheme can enable the aircraft to ascend to a height above the altitude of 10000 meters for operation, thereby greatly improving the ascending limit of the aircraft.

Further, the pressure regulating mechanism is a pressure regulating valve.

The pressure regulating valve comprises a pressure regulating valve body and a pressure regulating valve cover which are connected with each other, a pressure regulating valve cavity is enclosed by the pressure regulating valve body and the pressure regulating valve cover, a pressure regulating valve core and a pressure regulating valve spring are arranged in the pressure regulating valve cavity, and two ends of the pressure regulating valve spring respectively abut against the pressure regulating valve cover and the pressure regulating valve core. By adopting the arrangement, the pressure regulating valve can better adapt to the high-altitude environment and is not easy to lose effectiveness.

Further, the valve body of the pressure regulating valve is in threaded connection with the valve cover of the pressure regulating valve. By adopting the arrangement, the valve cover of the pressure regulating valve is screwed to adjust the relative position between the valve cover and the valve body of the pressure regulating valve, so that the deformation of the spring of the pressure regulating valve is changed, the elastic force applied to the valve core of the pressure regulating valve by the spring of the pressure regulating valve is further changed, and finally, the purpose that the set value of the pressure regulating valve can be adjusted as required is achieved, and different pressure regulating valves do not need to be replaced.

Further, the air inlet end of the pressure regulating valve is fixedly provided with a pressure regulating valve filter screen. By adopting the arrangement, the pressure regulating valve filter screen can prevent sundries and the like from entering the pressure regulating valve to cause the failure of the pressure regulating valve.

Further, a safety valve with opening pressure larger than the opening pressure of the pressure regulating valve is connected to the lubricating oil tank. By adopting the arrangement, the upper limit of the pressure in the lubricating oil tank is limited by the safety valve, and when the pressure is overlarge, the safety valve can be automatically opened to release the pressure, so that the situation that the sealing of the oil seal of the aero-engine is invalid due to overlarge internal pressure of the engine body is avoided.

Further, the safety valve comprises a safety valve body, a safety valve cover, a safety valve spring and a safety valve core, the safety valve body and the safety valve cover are detachably connected and enclose a safety valve cavity, the safety valve core is located in the safety valve cavity, one end of the safety valve spring is abutted to the safety valve cover, and the other end of the safety valve spring is abutted to the safety valve core. By adopting the arrangement, the safety valve can be better adapted to the high-altitude environment and can be normally used.

Further, the oil return port includes a first oil return hole and a second oil return hole. By adopting the arrangement, the oil return paths of the lubricating oil tank are increased, so that oil return is conveniently and better carried out.

Further, a liquid level sensor is connected to the lubricating oil tank. By adopting the arrangement, the lubricating oil quantity in the lubricating oil tank can be conveniently monitored by utilizing the liquid level sensor.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a fuel tank assembly for an aircraft engine according to the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic structural diagram of the pressure regulating mechanism of FIG. 2;

fig. 4 is a schematic structural view of the safety valve of fig. 2.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the pressure regulating mechanism 1, a pressure regulating valve bonnet 10, a fastening nut 11, a sealing gasket 12, a pressure regulating valve spring 13, a pressure regulating valve core 14, a pressure regulating valve body 15, a pressure regulating valve filter screen 16, a filter screen retainer ring 17, a lubricating oil tank 2, an oil outlet 21, a first oil return hole 22, a second oil return hole 23, a liquid level sensor 3, a safety valve 7, a safety valve bonnet 70, a safety valve spring 71, a sealing ring 72, a safety valve core 73, a safety valve filter screen 74 and a safety valve body 75.

The embodiment is basically as shown in the attached figures 1 to 4: the utility model provides a lubricating oil tank assembly for aeroengine, includes the lubricating oil tank, and the top of lubricating oil tank 2 is provided with oil-out 21 and oil return opening, and in this embodiment, the oil return opening includes first oil return hole 22 and second oil return hole 23, and first oil return hole 22 and second oil return hole 23 symmetric distribution are in the both sides at lubricating oil tank 2 top. The top of the lubricating oil tank 2 is also connected with a liquid level sensor 3, so that the oil quantity in the lubricating oil tank 2 is conveniently monitored. The top of the lubricating oil tank 2 is also provided with a vent hole for communicating the inside of the lubricating oil tank with the atmosphere outside the lubricating oil tank, and the vent hole is connected with a pressure regulating mechanism 1, so that the inside of the lubricating oil tank is communicated with the atmosphere outside the lubricating oil tank through the pressure regulating mechanism.

In the present embodiment, the pressure regulating mechanism 1 is preferably a pressure regulating valve, the pressure regulating valve includes a pressure regulating valve body 15 and a pressure regulating valve cover 10 connected to each other, and in the present embodiment, the connection between the pressure regulating valve body 15 and the pressure regulating valve cover 10 is preferably a threaded connection; the outer side of the valve cover 10 of the pressure regulating valve is in threaded connection with a fastening nut 11, and a sealing gasket 12 is arranged between the fastening nut 11 and a valve body 15 of the pressure regulating valve; the pressure regulating valve body 15 and the pressure regulating valve cover 10 enclose a pressure regulating valve cavity, the pressure regulating valve core 14 is positioned in the pressure regulating valve cavity, one end of a pressure regulating valve spring 13 is abutted against the pressure regulating valve cover 10, the other end of the pressure regulating valve spring 13 is abutted against the pressure regulating valve core 14, the pressure regulating valve core 14 is moved and reset through the pressure regulating valve spring 13, a pressure regulating valve filter screen 16 is arranged at the air inlet end of the pressure regulating valve, and the pressure regulating valve filter screen 16 is fixed on the pressure regulating valve body 15 through a filter screen retainer ring 17; when the pressure is too high, the pressure regulating valve is opened through the movement of the valve core 14 of the pressure regulating valve, so that the gas in the lubricating oil tank 2 is discharged through the gas inlet end of the valve body 15 of the pressure regulating valve, the valve cavity of the pressure regulating valve and the gas outlet end of the valve cover 10 of the pressure regulating valve in sequence, and the pressure regulation is realized.

A safety valve 7 is also mounted on the fuel tank 2, preferably the safety valve 7 is mounted at an incline on top of the fuel tank 2. In this embodiment, the safety valve 7 includes a safety valve body 75, a safety valve bonnet 70, a safety valve spring 71 and a safety valve spool 73, the safety valve body 75 and the safety valve bonnet 70 are detachably connected and enclose a safety valve 7 valve cavity, the safety valve spool 73 is located in the safety valve 7 valve cavity, a sealing ring 72 is disposed between the safety valve spool 73 and the safety valve body 75, one end of the safety valve spring 71 abuts against the safety valve bonnet 70, the other end of the safety valve spring 71 abuts against the safety valve spool 73, and an outlet end of the safety valve body 75 is connected with a safety valve strainer 74. The safety valve body 75 is installed on the fuel tank 2 by a screw thread, and when the pressure in the fuel tank 2 is greater than the set value of the safety valve 7, the safety valve spool 73 moves under the pressure and compresses the spring, so that the safety valve 7 is opened, thereby releasing the pressure of the fuel tank 2.

When the lubricating oil tank is used, the oil outlet 21 of the lubricating oil tank is communicated with an oil pump of a lubricating system, so that the oil pump sucks lubricating oil in the lubricating oil tank 2 and pumps the lubricating oil into a lubricating oil channel of the engine body, the bottom of the engine body is provided with an oil storage tank communicated with an oil return port of the lubricating oil tank, so that the lubricating oil in the engine body is collected into the oil storage tank and then flows back into the lubricating oil tank through two oil return pipelines, and the recycling of the lubricating oil is realized.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (9)

1. The utility model provides a lubricating oil tank assembly for aeroengine, includes the lubricating oil tank, be provided with oil-out and oil return opening on the lubricating oil tank, still be provided with the air vent with the inside and outside atmosphere intercommunication of lubricating oil tank on the lubricating oil tank, its characterized in that: the vent hole is connected with a pressure regulating mechanism, so that the inside of the lubricating oil tank is communicated with the atmosphere outside the lubricating oil tank through the pressure regulating mechanism.

2. A fuel tank assembly for an aircraft engine as claimed in claim 1, wherein: the pressure regulating mechanism is a pressure regulating valve.

3. A fuel tank assembly for an aircraft engine as claimed in claim 2, wherein: the pressure regulating valve comprises a pressure regulating valve body and a pressure regulating valve cover which are connected with each other, the pressure regulating valve body and the pressure regulating valve cover enclose a pressure regulating valve cavity, a pressure regulating valve core and a pressure regulating valve spring are arranged in the pressure regulating valve cavity, and two ends of the pressure regulating valve spring respectively abut against the pressure regulating valve cover and the pressure regulating valve core.

4. A fuel tank assembly for an aircraft engine as claimed in claim 3, wherein: the valve body of the pressure regulating valve is in threaded connection with the valve cover of the pressure regulating valve.

5. A fuel tank assembly for an aircraft engine according to claim 3 or 4, wherein: and the air inlet end of the pressure regulating valve is fixedly provided with a pressure regulating valve filter screen.

6. A fuel tank assembly for an aircraft engine according to any one of claims 1 to 4, wherein: and the lubricating oil tank is connected with a safety valve with the opening pressure larger than the opening pressure of the pressure regulating valve.

7. A fuel tank assembly for an aircraft engine as claimed in claim 6, wherein: the safety valve comprises a safety valve body, a safety valve cover, a safety valve spring and a safety valve core, wherein the safety valve body and the safety valve cover are detachably connected and enclose a safety valve cavity, the safety valve core is located in the safety valve cavity, one end of the safety valve spring is abutted to the safety valve cover, and the other end of the safety valve spring is abutted to the safety valve core.

8. A fuel tank assembly for an aircraft engine as claimed in claim 1, 2, 3, 4 or 7, wherein: the oil return port comprises a first oil return hole and a second oil return hole.

9. A fuel tank assembly for an aircraft engine as claimed in claim 8, wherein: and the lubricating oil tank is connected with a liquid level sensor.

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