Lubricating oil nozzle

Abstract

The invention provides a lubricating oil nozzle, and relates to the technical field of lubricating oil system components. The lubricating oil nozzle provided by the embodiment of the invention comprises a main body and a spiral piece, an oil inlet hole and an oil spraying hole which are communicated with each other are formed in the main body, an included angle is formed between the axis of the oil spraying hole and the axis of the oil inlet hole, the oil inlet hole is provided with an oil inlet end and a blind end which are opposite, and the blind end is provided with a conical surface. The communicating position of the oil spraying hole and the oil inlet hole is closer to the blind end than the oil inlet end. The spiral piece is installed in the oil injection hole, so that the spiral piece counteracts rotational flow of the lubricating oil entering the oil injection hole from the oil inlet hole, the divergence degree of the lubricating oil sprayed out of the oil injection hole is reduced, and then the target passing rate of the lubricating oil nozzle is increased.

Description

Technical Field

[0001] The invention relates to the technical field of lubricating oil system components, and in particular to a lubricating oil nozzle. Background Art

[0002] With the continuous development and progress of aviation science and technology, the performance of aircraft engines, known as the "crown jewel of industry", is also improving. At present, advanced aircraft engines are developing in the direction of high power and high speed. Specifically, aircraft engines will have high turbine inlet temperature, high pressure ratio, high main shaft speed and strict component space restrictions. Although the main large components, such as the compressor, combustion chamber and turbine, are the direct factors affecting the performance improvement of aircraft engines, the performance improvement of aircraft engines also requires the assistance of various systems to ensure the continuous operation of the engine. The lubricating oil system is the only system in the engine system that adopts a circulation method. Its performance plays a vital role in whether the engine can operate normally.

[0003] The lubricating oil system is responsible for delivering lubricating oil to friction parts, cooling the engine, and cleaning up debris generated by various parts. During the operation of aircraft engines, rotating parts such as bearings and gears contact and rub against each other, which will inevitably generate friction losses and a large amount of heat. At this time, it is necessary to provide lubricating oil through the lubrication system to reduce the temperature of the parts and take away the heat and wear generated between the parts. Therefore, it is extremely important to lubricate and cool the main bearings of aircraft engines and the gears in the gearbox in the transmission system.

[0004] In the lubricating oil system, the component that provides lubricating oil is the lubricating oil nozzle. All relatively mature lubrication methods, such as under-ring lubrication, jet lubrication, oil mist lubrication, etc., require the lubricating oil to be sprayed out from the lubricating oil nozzle to provide lubricating oil to the corresponding components for lubrication and cooling. The performance index of the lubricating oil nozzle plays a decisive role in the performance of the entire lubricating oil system. For the lubricating oil nozzle, there are two main performance indicators. One is the outlet flow rate of the lubricating oil nozzle. This indicator determines the oil supply. It has a direct relationship with the heat generated by the rotating parts in the engine. The higher the friction heat generated by the rotating parts, the corresponding oil supply demand will also increase. Another important indicator is the external streamline divergence of each nozzle of the lubricating oil nozzle, also known as the cylindricality and bunching of the external streamline. This indicator directly determines how much lubricating oil can enter the target area to provide effective lubrication and cooling for the rotating parts. After so many years of structural design, the lubricating oil nozzle in the lubricating oil system of the aircraft engine has basically matured in structure. However, in the flow direction test before the actual delivery of the lubricating oil nozzle, there is still a phenomenon that the external streamline divergence of the nozzle of the lubricating oil nozzle is large and the target passing rate is not ideal. Therefore, how to improve the target passing rate becomes one of the important issues that need to be solved in the design of lubricating oil nozzles. Summary of the invention

[0005] The object of the present invention is to provide a lubricating oil nozzle, which can effectively improve the target passing rate of the lubricating oil nozzle and reduce the divergence of the external streamline of the lubricating oil nozzle.

[0006] The embodiments of the present invention can be implemented in the following ways:

[0007] A lubricating oil nozzle, the lubricating oil nozzle comprising a main body, an oil inlet hole and an oil spray hole connected to the oil inlet hole are arranged in the main body, the axis of the oil spray hole forms an angle with the axis of the oil inlet hole, and the oil inlet hole has an oil inlet end and a blind end opposite to each other, the blind end is provided with a conical surface, and the connecting point between the oil spray hole and the oil inlet hole is closer to the blind end than the oil inlet end;

[0008] The lubricating oil nozzle further comprises a spiral component, which is installed in the oil spray hole and is used to counteract the swirl of the lubricating oil entering the oil spray hole from the oil inlet hole.

[0009] Optionally, the spiral member includes a fixing rod and a spiral sheet, the fixing rod is fixedly connected to one axial end of the spiral sheet, and the fixing rod is used to engage with the main body to fix the spiral member in the oil injection hole.

[0010] Optionally, a clamping positioning groove is provided on the main body, and the fixing rod is embedded in the clamping positioning groove.

[0011] Optionally, the depth of the snap-fit ​​positioning groove is d, 1mm≤d≤2mm.

[0012] Optionally, the minimum distance between the snap-fit ​​positioning groove and the conical surface is L2, 1mm≤L2.

[0013] Optionally, the clamping positioning groove includes a first groove section and a second groove section located on both sides of the oil injection hole in a radial direction, and the first groove section and the second groove section have the same length.

[0014] Optionally, the thickness of the spiral sheet is consistent with the thickness of the fixing rod.

[0015] Optionally, the fixing rod has an arc surface away from one end of the spiral sheet, and the arc surface has the same curvature as the wall surface of the oil inlet hole, so that the arc surface fits with the wall surface of the oil inlet hole to form a smooth cylindrical surface.

[0016] Optionally, the radial outer wall surface of the spiral blade is in contact with the wall surface of the oil injection hole.

[0017] Optionally, the main body is further provided with a plug hole extending coaxially with the oil spray hole, and the plug hole and the oil spray hole are located on both sides of the oil inlet hole; the lubricating oil nozzle also includes a plug installed in the plug hole; the radial dimension of the plug hole is larger than the spiral component, so that the spiral component can be installed into the oil spray hole through the plug hole.

[0018] Optionally, the lubricating oil nozzle further comprises a nozzle pipe installed in the oil spray hole, one end of the nozzle pipe is abutted and positioned against the spiral member, and the other end of the nozzle pipe is used to spray the lubricating oil in the oil spray hole.

[0019] The beneficial effects of the lubricating oil nozzle provided by the embodiment of the present invention include:

[0020] An embodiment of the present invention provides a lubricating oil nozzle, which includes a main body and a spiral component. An oil inlet hole and an oil spray hole that are interconnected are provided in the main body, the axis of the oil spray hole forms an angle with the axis of the oil inlet hole, and the oil inlet hole has a relative oil inlet end and a blind end, and the blind end has a conical surface. The connecting point between the oil spray hole and the oil inlet hole is closer to the blind end than the oil inlet end. The spiral component is installed in the oil spray hole, so that the spiral component offsets the swirl of the lubricating oil entering the oil spray hole from the oil inlet hole, so that the divergence of the lubricating oil sprayed from the oil spray hole is reduced, thereby improving the target passing rate of the lubricating oil nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above features and advantages of the present invention can be better understood after reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily drawn to scale, and components with similar related properties or features may have the same or similar reference numerals.

[0022] Figure 1 The schematic diagram of the structure of the existing lubricating oil nozzle during the flow test is shown;

[0023] Figure 2 A schematic longitudinal section structure diagram of a lubricating oil nozzle provided according to one aspect of the present invention is shown;

[0024] Figure 3 Shows Figure 2 A schematic diagram of the enlarged local structure at point A in the middle;

[0025] Figure 4 A schematic diagram showing the structure of a spiral member in a lubricating oil nozzle provided according to one aspect of the present invention is shown;

[0026] Figure 5 A schematic structural diagram of a spiral member in a lubricating oil nozzle provided according to one aspect of the present invention at another viewing angle is shown;

[0027] Figure 6A schematic diagram showing the swirl direction of the lubricating oil entering the oil injection hole in the lubricating oil nozzle provided according to one aspect of the present invention;

[0028] Figure 7 A schematic diagram of the structure of the connection between the oil injection hole and the oil inlet hole in the lubricating oil nozzle provided according to one aspect of the present invention is shown;

[0029] Figure 8 A partial structural schematic diagram of a lubricating oil nozzle provided according to one aspect of the present invention is shown;

[0030] Fig. 9 A partial structural schematic diagram of a lubricating oil nozzle provided according to another aspect of the present invention is shown;

[0031] Fig.10 A schematic structural diagram of a lubricating oil nozzle provided according to one aspect of the present invention during a flow test is shown.

[0032] Reference numerals:

[0033] 10-lubricating oil nozzle; 100-main body; 110-oil inlet hole; 111-oil inlet end; 112-conical surface; 120-clamping positioning groove; 121-first groove section; 122-second groove section; 130-oil spray hole; 140-plug hole; 200-screw piece; 211-fixing rod; 212-spiral piece; 300-plug; 400-spray nozzle pipe;

[0034] 21-target plate; 22-external streamlines. DETAILED DESCRIPTION

[0035] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the accompanying drawings and specific embodiments are only exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0036] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", "vertical" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship in which the product of the invention is usually placed when used, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] At the same time, it should be noted that the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified or limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, an integral connection, or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or the internal communication of two components, etc. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The oil nozzle is an important component in the oil system of an aircraft engine. It provides oil to bearings, oil rings, gear meshing areas, etc. Each oil nozzle needs to be tested for flow and direction before it is shipped out of the factory. Figure 1 As shown, specifically, a target plate 21 is manufactured according to the technical requirements of the lubricating oil nozzle. The target plate 21 is a ring-shaped part with a through hole in the middle. Then the target plate 21 is set at a preset distance from the oil injection hole, and then the lubricating oil nozzle is supplied with oil, and the oil is sprayed to the target plate 21 through the lubricating oil nozzle, and then the external streamline 22 of the oil injection hole (i.e., the streamline formed after the lubricating oil is sprayed out of the oil injection hole) is checked for passing the target and whether the flow rate can meet the design requirements. At the same time, if the preset distance exceeds 50mm, the external streamline 22 will be affected by the air, and the divergence will be greater, which will seriously affect the passing rate

[0040] The target passing condition of the external streamline 22, specifically, is the target passing rate of the external streamline 22 through the middle through hole of the target plate 21. If the target passing rate of the external streamline 22 is low, it may cause the target of the lubricating oil nozzle (such as the bearing and oil collecting ring mentioned above) to obtain insufficient lubricating oil, thereby affecting the lubrication effect. For example, when the divergence of the external streamline 22 of the lubricating oil nozzle is relatively serious (i.e., the target passing rate is low), the streamline sprayed into the bearing cavity may be rebounded by the highly rotating bearing or cannot be collected by the oil collecting ring, resulting in low oil collection efficiency of the oil collecting ring, thereby greatly affecting the lubrication effect. However, when lubricating the gear meshing area, the external streamline 22 of the lubricating oil nozzle has a large divergence and will not affect the lubricating effect of the lubricating oil nozzle.

[0041] like Figure 1In the test results of the target passing rate shown, the target passing rate of the external streamline 22 is about 40%, which is difficult to meet the use requirements. The inventors have found that the main reason for the low target passing rate is that the oil injection hole is close to the conical surface of the oil inlet hole, so a vortex will appear inside the lubricating oil entering the oil injection hole from the oil inlet hole, which will cause the streamline of the lubricating oil sprayed from the oil injection hole to be uneven and divergent. The vortex formed in the oil injection hole of the lubricating oil nozzle is a unidirectional vortex. Simply increasing the length of the nozzle cannot produce sufficient consumption of the vortex and cannot improve the target passing rate of the external streamline 22. The lubricating oil nozzle provided by the present invention improves the target passing rate of the lubricating oil nozzle by offsetting the vortex.

[0042] Figure 2 FIG. 1 shows a schematic diagram of the longitudinal structure of the lubricating oil nozzle 10 provided in this embodiment. Figure 3 for Figure 2 The enlarged schematic diagram of the local structure at A in the middle. Please refer to Figure 2 and Figure 3 , this embodiment provides a lubricating oil nozzle 10, which can be used in the lubricating oil system of an aircraft engine. The lubricating oil nozzle 10 includes a main body 100 and a spiral member 200. An oil inlet hole 110 and an oil spray hole 130 are provided in the main body 100, which are interconnected. The axis of the oil spray hole 130 is at an angle to the axis of the oil inlet hole 110, and the oil inlet hole 110 has a relative oil inlet end 111 and a blind end, and the blind end has a conical surface 112. The connection between the oil spray hole 130 and the oil inlet hole 110 is closer to the blind end than the oil inlet end 111. The spiral member 200 is installed in the oil spray hole 130, so that the spiral member 200 offsets the swirl of the lubricating oil entering the oil spray hole 130 from the oil inlet hole 110, so that the divergence of the lubricating oil sprayed from the oil spray hole 130 is reduced, thereby improving the target passing rate of the lubricating oil nozzle 10. Specifically, in this embodiment, the axis of the oil spray hole 130 is arranged perpendicular to the oil inlet hole 110. Meanwhile, the lubricating oil nozzle 10 provided in this embodiment can be widely used in the lubrication and cooling structure design of the lubricating oil system of aircraft engines, ground combustion engines or gas generators.

[0043] Figure 4 This is a schematic diagram of the structure of the spiral member 200 in the lubricating oil nozzle 10 provided in this embodiment. Figure 5 This is a schematic structural diagram of the spiral member 200 in the lubricating oil nozzle 10 provided in this embodiment from another perspective. Figure 6 This is a schematic diagram of the swirl direction of the lubricating oil entering the oil injection hole 130 in the lubricating oil nozzle 10 provided in this embodiment. Figure 2-Figure 6 The spiral member 200 in this embodiment has a spiral structure of the spiral member 200, through which the lubricating oil is guided to move in a direction opposite to the swirl direction, thereby offsetting the swirl generated by the lubricating oil, so that the streamline of the lubricating oil sprayed from the oil injection hole 130 is straight. Specifically, as Figure 5 and Figure 6As shown, the swirl direction of the lubricating oil is counterclockwise, and accordingly, the spiral member 200 with a spiral structure rotating in a clockwise direction is used to offset the swirl. Similarly, if the swirl direction of the lubricating oil is clockwise, the spiral member 200 with a spiral structure rotating in a counterclockwise direction is required to offset the swirl, thereby achieving the purpose of improving the target passing rate.

[0044] It should be noted that the direction of the swirl can be obtained by performing a three-dimensional fluid mechanics software analysis and calculation on the lubricating oil nozzle 10 with the spiral 200 installed, and the length of the spiral 200 and the spiral angle required to offset the swirl can also be set according to the specific swirl strength. Specifically, according to simulation calculations and engineering experience, for the lubricating oil nozzle 10 with a diameter of the oil injection hole 130 greater than 2mm, the swirl inside will be larger. This is because when the diameter of the oil injection hole 130 exceeds 2mm, the flow rate of the lubricating oil nozzle 10 will increase, the internal flow velocity will be larger, and the flow of the swirl will be more intense. Therefore, according to the swirl strength, the means such as increasing the curl of the spiral 200 and the length of the spiral structure can be adopted to more effectively offset the unidirectional swirl in the oil injection hole 130.

[0045] In this embodiment, the spiral member 200 includes a fixed rod 211 and a spiral sheet 212, and a spiral structure is formed by the spiral sheet 212. The fixed rod 211 is fixedly connected to one axial end of the spiral sheet 212, and the fixed rod 211 is used to engage with the main body 100, so as to fix the spiral member 200 in the oil injection hole 130. Specifically, the length L3 of the fixed rod 211 is greater than the radial dimension of the spiral sheet 212, so that the two ends of the fixed rod 211 in the length direction protrude from the radial periphery of the spiral sheet 212, thereby being engaged with the main body 100. Further, the radial outer wall surface of the spiral sheet 212 is in contact with the wall surface of the oil injection hole 130, so as to ensure that all the lubricating oil in the oil injection hole 130 can be sprayed outward after being guided by the spiral sheet 212, thereby ensuring that the swirl is offset and the target passing rate is improved before spraying through the guidance of the spiral sheet 212.

[0046] Furthermore, the thickness of the fixing rod 211 is set to be consistent with the thickness of the spiral piece 212. The thickness of the spiral piece 212 is the distance between the two spiral surfaces of the spiral piece 212. Since the thickness of the fixing rod 211 is consistent with the thickness of the spiral piece 212, the two spiral surfaces of the spiral piece 212 are directly connected to the two side surfaces of the fixing rod 211 in the thickness direction and smoothly transition.

[0047] Figure 7 This is a schematic diagram of the structure of the connection between the oil injection hole 130 and the oil inlet hole 110 in the lubricating oil nozzle 10 provided in this embodiment. Figure 2-Figure 7Optionally, a snap-fitting positioning groove 120 is provided on the main body 100, and a fixing rod 211 is embedded in the snap-fitting positioning groove 120, so as to ensure the connection reliability between the spiral member 200 and the main body 100 and prevent the spiral member 200 from loosening. At the same time, the snap-fitting positioning groove 120 limits the fixing rod 211, so as to effectively prevent the spiral member 200 from rotating relative to the main body 100 during use.

[0048] Specifically, in this embodiment, the fixing rod 211 is a substantially rectangular parallelepiped rod, and accordingly, the clamping positioning groove 120 is configured as a rectangular groove. At the same time, the clamping positioning groove 120 is configured to include a first groove section 121 and a second groove section 122 located on both radial sides of the oil injection hole 130, and the two ends of the radial periphery of the spiral piece 212 protruding in the length direction of the fixing rod 211 are clamped by the first groove section 121 and the second groove section 122 respectively.

[0049] Furthermore, the depth of the clamping positioning groove 120 is set to be consistent with the width of the fixing rod 211, so that after the fixing clamp is embedded in the clamping positioning groove 120, the fixing rod 211 neither protrudes from the clamping positioning groove 120 nor is recessed relative to the wall surface of the oil inlet hole 110, so that the fixing rod 211 is flush with the oil inlet hole 110, thereby avoiding the fixing rod 211 from causing additional influence on the flow of lubricating oil. Specifically, the width of the fixing rod 211 is the distance between the wall surface of the fixing rod 211 on the side close to the spiral sheet 212 and the wall surface of the fixing rod 211 on the side away from the spiral sheet 212.

[0050] Furthermore, since the wall surface of the oil inlet hole 110 is a cylindrical surface, the wall surface of the fixing rod 211 away from the spiral sheet 212 can also be set as an arc surface, and the arc surface has the same curvature as the wall surface of the oil inlet hole 110. In this way, when the fixing rod 211 is embedded in the snap-fit ​​positioning groove 120, the arc surface fits with the wall surface of the oil inlet hole 110 to form a smooth cylindrical surface.

[0051] In this embodiment, the main dimensions of the snap-fit ​​positioning groove 120 are three, namely, the groove depth d of the snap-fit ​​positioning groove 120 , the length of the snap-fit ​​positioning groove 120 , and the minimum distance between the snap-fit ​​positioning groove 120 and the arc surface of the lubricating oil nozzle 10 .

[0052] Optionally, the groove depth d of the clamping positioning groove 120 is set to 1mm≤d≤2mm. Specifically, the groove depth d of the clamping positioning groove 120 can be set to 1mm, 1.5mm or 2mm. If the groove depth d is set to be too large, there may be a risk of insufficient strength of the lubricating oil nozzle 10. If the groove depth d is too small, there may be a risk that the spiral member 200 cannot be well fixed.

[0053] Optionally, the length of the clamping positioning groove 120 is specifically reflected in the length of the first groove section 121 and the second groove section 122. Specifically, the first groove section 121 and the second groove section 122 are symmetrically distributed relative to the plane of the axis of the oil injection hole 130. Accordingly, the length, groove depth and other dimensions of the first groove section 121 are the same as those of the second groove section 122. The length of the first groove section 121 is as follows: Figure 7 Thus, the length of the clamping positioning groove 120 is actually the sum of twice the length L1 of the first groove section 121 and the diameter D of the oil injection hole 130. Meanwhile, in this embodiment, the length of the clamping positioning groove 120 is consistent with the length L3 of the fixing rod 211, that is, L3=2L1+D.

[0054] Furthermore, the thickness of the snap-fit ​​positioning groove 120 is consistent with the thickness of the fixing rod 211. In other words, the thickness of the snap-fit ​​positioning groove 120, the thickness of the fixing rod 211 and the thickness of the spiral sheet 212 are consistent. The thickness of the snap-fit ​​positioning groove 120 is set to be consistent with the thickness of the fixing rod 211, so that the size of the snap-fit ​​positioning groove 120 is completely consistent with the size of the fixing rod 211, and each wall surface of the snap-fit ​​positioning can be fitted with the fixing rod 211.

[0055] Figure 8 The schematic diagram of the partial structure of the lubricating oil nozzle 10 provided in this embodiment, specifically, Figure 8 The structure of the internal spiral member 200 of the lubricating oil nozzle 10 and the main body 100 is shown in FIG. Figure 2-Figure 8 Optionally, the minimum distance between the snap-fitting positioning groove 120 and the tapered surface 112 is L2, 1mm≤L2. Specifically, the minimum distance L2 between the snap-fitting positioning groove 120 and the tapered surface 112 can be set to 1mm, 1.5mm or 2mm, etc. By limiting the minimum distance between the snap-fitting positioning groove 120 and the tapered surface 112, it is ensured that a certain processing distance margin can be retained when processing the snap-fitting positioning groove 120.

[0056] At the same time, it should be noted that Figure 2-Figure 8 In the structure of the lubricating oil nozzle 10 shown in FIG. 1 , the installation angle of the spiral member 200 is 90°. In other words, in the Figure 2 and Figure 8 In the structure shown, the length direction of the clamping positioning groove 120 is parallel to the axial direction of the oil inlet hole 110, but the installation angle of the spiral member 200 is not limited to 90°, and it can be adjusted according to the structural changes of the lubricating oil nozzle 10. For example, when the axis of the oil injection hole 130 and the axis of the oil inlet hole 110 change, the installation angle can be adjusted according to the simulation results. As an example, Fig. 9 This is a structure in which the installation angle θ of the spiral member 200 is not 90°.

[0057] Please refer to it again Figure 2 and Figure 3 In this embodiment, the main body 100 is further provided with a plug hole 140 extending coaxially with the oil injection hole 130. The plug hole 140 and the oil injection hole 130 are located on both sides of the oil inlet hole 110, and the plug hole 140 and the oil injection hole 130 are connected through the oil inlet hole 110. The radial dimension of the plug hole 140 is larger than the spiral member 200, so that the spiral member 200 can be installed into the oil injection hole 130 through the plug hole 140. Specifically, the radial dimension of the plug hole 140 is larger than the length L3 of the fixing rod 211, so that the spiral member 200 is inserted into the oil injection hole 130 by sequentially passing through the plug hole 140 and the oil inlet hole 110. At the same time, the lubricating oil nozzle 10 also includes a plug 300 installed in the plug hole 140, and the plug hole 140 is blocked by the plug 300. In this way, during the oil injection process, the lubricating oil nozzle 10 can only enter through the oil inlet end 111 of the oil inlet hole 110, and then spray oil outward through the end of the oil injection hole 130 away from the oil inlet hole 110.

[0058] Specifically, during the processing, the oil inlet hole 110 and the plug hole 140 can be processed on the main body 100 first, and then the tool is inserted from the plug hole 140 to process the clamping positioning groove 120. After the clamping positioning groove 120 is processed, the oil injection hole 130 is processed from the other side of the main body 100, so that the structural processing of the main body 100 is completed. Then, the spiral member 200 is inserted from the plug hole 140, and the fixing rod 211 of the spiral member 200 is embedded in the clamping positioning groove 120, so that the installation of the spiral member 200 can be completed, and finally the plug 300 can be installed.

[0059] The plug hole 140 is provided to facilitate the installation of the spiral member 200 and can also be used as an observation hole to check the matching degree between the spiral member 200 and the oil injection hole 130. Furthermore, a chamfer can be provided at one end of the plug hole 140 away from the oil inlet hole 110 to guide the installation.

[0060] Fig.10 FIG. 1 is a schematic diagram showing the structure of the oil nozzle 10 provided in this embodiment when performing a flow test. Fig.10 As shown, the lubricating oil nozzle 10 provided in this embodiment can achieve a small degree of divergence of the external streamlines of the lubricating oil nozzle 10, and the target pass rate is increased from the original 40% to 80%, and for some nozzles, the target pass rate can even reach 100%, ensuring that the lubricating oil nozzle 10 can effectively and continuously provide lubrication and cooling for the rotating parts in the aircraft engine.

[0061] Furthermore, the lubricating oil nozzle 10 provided in the present embodiment further includes a nozzle pipe 400 disposed in the oil injection hole 130, one end of the nozzle pipe 400 is abutted against the spiral member 200 for positioning, and the other end of the nozzle pipe 400 is used to spray the lubricating oil in the oil injection hole 130. Specifically, the radial dimension of the oil injection hole 130 where the spiral member 200 is installed is consistent with the radial dimension of the nozzle pipe 400 installed. When conducting a flow test, the oil injection flow rate is directly checked for the lubricating oil nozzle 10 without the nozzle pipe 400 installed. If the test result shows that the oil injection flow rate is greater than the design requirement, a nozzle pipe 400 with a suitable inner diameter can be selected and installed in the oil injection hole 130 according to the lubricating oil flow rate to be reduced. Specifically, if the flow rate is large, a nozzle pipe 400 with a smaller inner diameter is used. When in use, the nozzle tube 400 can be fixed on the main body 100 by using a tool, and the nozzle tube 400 will not move relative to the main body 100 while ensuring that the lubricating oil continues to flow out through the nozzle tube 400. If the test result shows that the flow rate meets the design requirements, the nozzle tube 400 can be fixed in the oil injection hole 130 by welding or other methods to ensure that the flow rate after the target can meet the design requirements.

[0062] The lubricating oil nozzle 10 provided by the strength of the present invention is provided with a spiral member 200 in the oil injection hole 130, and the rotation direction of the spiral member 200 is opposite to the swirl direction of the lubricating oil entering the oil injection hole 130, so that the swirl can be offset by the spiral member 200, and the flow is rectified, thereby improving the target passing rate of the external streamline of the lubricating oil nozzle 10. At the same time, by providing the spiral member 200 and the nozzle pipe 400 on the lubricating oil nozzle 10, the lubricating oil flow rate can be dynamically matched, so that the flow rate before and after the target can meet the design requirements. At the same time, the lubricating oil nozzle 10 with the spiral member 200 is simple to process, and the target passing rate can be effectively improved by simple improvement, which has strong applicability and can effectively reduce the failure rate caused by poor lubrication.

[0063] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technology in the field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A lubricating oil nozzle, comprising a main body, an oil inlet hole and an oil spray hole connected to the oil inlet hole are arranged in the main body, the axis of the oil spray hole forms an angle with the axis of the oil inlet hole, and the oil inlet hole has an oil inlet end and a blind end opposite to each other, the blind end is provided with a conical surface, and the connecting point between the oil spray hole and the oil inlet hole is closer to the blind end than the oil inlet end; characterized in that: The lubricating oil nozzle further comprises a spiral component, which is installed in the oil spray hole and is used to counteract the swirl of the lubricating oil entering the oil spray hole from the oil inlet hole.

2. The lubricating oil nozzle according to claim 1, characterized in that: The spiral member comprises a fixing rod and a spiral sheet, wherein the fixing rod is fixedly connected to one axial end of the spiral sheet, and the fixing rod is used for engaging with the main body to fix the spiral member in the oil injection hole.

3. The lubricating oil nozzle according to claim 2, characterized in that: The main body is provided with a clamping positioning groove, and the fixing rod is embedded in the clamping positioning groove.

4. The lubricating oil nozzle according to claim 3, characterized in that: The groove depth of the clamping positioning groove is d, 1mm≤d≤2mm.

5. The lubricating oil nozzle according to claim 3, characterized in that: The minimum distance between the clamping positioning groove and the tapered surface is L2, 1mm≤L2.

6. The lubricating oil nozzle according to claim 3, characterized in that: The clamping positioning groove includes a first groove section and a second groove section located on both sides of the oil injection hole in a radial direction, and the first groove section and the second groove section have the same length.

7. The lubricating oil nozzle according to claim 2, characterized in that: The thickness of the spiral sheet is consistent with the thickness of the fixing rod.

8. The lubricating oil nozzle according to claim 2, characterized in that: The fixing rod has an arc surface away from one end of the spiral sheet, and the arc surface has the same curvature as the wall surface of the oil inlet hole, so that the arc surface and the wall surface of the oil inlet hole are fitted to form a smooth cylindrical surface.

9. The lubricating oil nozzle according to claim 2, characterized in that: The radial outer wall surface of the spiral sheet is in contact with the wall surface of the oil injection hole.

10. The lubricating oil nozzle according to any one of claims 1 to 9, characterized in that: The main body is also provided with a plug hole extending coaxially with the oil spray hole, and the plug hole and the oil spray hole are located on both sides of the oil inlet hole; the lubricating oil nozzle also includes a plug installed in the plug hole; the radial size of the plug hole is larger than the spiral component, so that the spiral component can be installed into the oil spray hole through the plug hole.

11. The lubricating oil nozzle according to any one of claims 1 to 9, characterized in that: The lubricating oil nozzle also includes a nozzle pipe installed in the oil spray hole, one end of the nozzle pipe is abutted and positioned with the spiral member, and the other end of the nozzle pipe is used to spray the lubricating oil in the oil spray hole.

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