CN109945060B - Integrated lubricating oil pressure regulating device - Google Patents

Integrated lubricating oil pressure regulating device Download PDF

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Publication number
CN109945060B
CN109945060B CN201910198100.2A CN201910198100A CN109945060B CN 109945060 B CN109945060 B CN 109945060B CN 201910198100 A CN201910198100 A CN 201910198100A CN 109945060 B CN109945060 B CN 109945060B
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CN
China
Prior art keywords
cavity
valve
mounting
pressure
chamber
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CN201910198100.2A
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Chinese (zh)
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CN109945060A (en
Inventor
曹鹏
吴吉昌
郑鹏
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中国航发湖南动力机械研究所
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Publication of CN109945060A publication Critical patent/CN109945060A/en
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Publication of CN109945060B publication Critical patent/CN109945060B/en

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Abstract

The invention discloses an integrated lubricating oil pressure regulating device, which comprises: the installation casing, be equipped with the installation cavity on the installation terminal surface of installation casing, the built-in valve casing that is equipped with of installation cavity, form the pressure chamber of drawing that lays in proper order between valve casing and the installation cavity, booster pump drainage chamber, draw and penetrate the chamber, safety valve export and bearing pressure chamber, draw the lubricating oil flow path intercommunication of pressure chamber and each nozzle department, the lubricating oil flow path intercommunication of booster pump drainage chamber and booster pump export, draw and penetrate the flow path or the oil tank intercommunication between chamber and oil tank and the booster pump, safety valve export and oil tank intercommunication, the bearing pressure chamber communicates with the first bearing chamber that the chamber pressure is the highest. Install case and elastic component in the valve pocket of valve case, form between the first end of case and the first end of valve case and draw the first pressure chamber that the pressure chamber communicates, form the second pressure chamber with bearing pressure chamber intercommunication between the second end of case and the second end of valve case, the periphery wall indent at case middle part is in order to form balanced chamber, is equipped with the runner of intercommunication balanced chamber and drawing the chamber on the case.

Description

Integrated lubricating oil pressure regulating device

Technical Field

The invention relates to the field of aircraft engines, in particular to an integrated lubricating oil pressure adjusting device.

Background

For an aircraft engine with a high use height, a lubricating oil pressure regulating device is generally required to be arranged on a pressurizing path of a lubricating system of the aircraft engine to ensure that the pressure of lubricating oil supplied to each nozzle of the lubricating system of the engine is within a specified range required by the operation of the engine, and when the pressure of the lubricating oil is too high, a safety valve is required to be arranged to release the pressure, so that accessories on the engine and pipelines are protected within a safe working pressure range. The aircraft engine generally adopts positive displacement pumps such as a gear pump, a rotary plate pump and a rotor pump, and the oil supply quantity of the positive displacement pumps is changed along with the flying height. In order to realize constant-flow oil supply at each flight altitude, the residual oil quantity is bypassed by the pressure regulating device when the aircraft works on the ground, and the bypass flow is reduced along with the reduction of the flow of lubricating oil when the aircraft works at high altitude. The adoption of the lubricating oil pressure adjusting device can also avoid the leakage of the lubricating oil of the bearing cavity caused by the excessive lubricating oil supplied to the bearing cavity in the starting and stopping processes. When abnormal conditions such as blockage of the lubricating oil pipeline occur, the lubricating oil pressure can be abnormally increased, and the lubricating system of the engine is damaged to form accessories, even the oil pipeline of the engine is damaged. Therefore, a safety valve is required to be arranged on a pressurizing road of the lubricating system, and when the lubricating oil pressure is abnormally increased and reaches a certain value, the oil discharge is opened, so that the lubricating system of the engine is protected.

At present, an engine is generally provided with two valves, namely a lubricating oil pressure regulating device sensing local atmospheric pressure and a safety valve sensing oil pressure. The existing lubricating oil pressure adjusting device only takes the flying atmospheric pressure as the adjusting back pressure, the engine oil supply pressure is the difference between the outlet pressure of the lubricating oil pump and the flying atmospheric pressure, the oil supply pressure cannot be really reflected, and particularly when the cavity pressure of the bearing is higher than a certain value, the oil supply pressure is lower than the minimum oil supply pressure of the bearing, and the bearing cannot be lubricated enough and damaged. Moreover, it does not include a safety shutter, and one system needs to have two shutters, resulting in an increase in the weight of the lubrication system.

Disclosure of Invention

The invention provides an integrated lubricating oil pressure regulating device, which aims to solve the technical problems that in the prior art, when the cavity pressure of a bearing is higher than a certain value, the bearing cannot be lubricated enough and is damaged, and the weight of a lubricating system is increased because a pressure regulating device and a safety valve are arranged independently.

The technical scheme adopted by the invention is as follows:

an integrated oil pressure regulation device for connection in a lubrication system of an aircraft engine, the oil pressure regulation device comprising: the mounting cavity is internally provided with a hollow cylindrical valve shell which is arranged along the length direction of the mounting cavity, a pressure guide cavity, a booster pump drainage cavity, an injection cavity, a safety valve outlet and a bearing pressure cavity which are sequentially arranged along the length direction of the mounting cavity are formed between the valve shell and the mounting cavity, the pressure guide cavity is communicated with a lubricating oil flow path at each nozzle in the lubricating system, the booster pump drainage cavity is communicated with a lubricating oil flow path at the booster pump outlet in the lubricating system, the injection cavity is communicated with a lubricating oil flow path or an oil tank between the oil tank and the booster pump in the lubricating system, the safety valve outlet is communicated with the oil tank, and the bearing pressure cavity is communicated with a first bearing cavity with the highest cavity pressure in the lubricating system; install case and the elastic component that lays in proper order along the axial of valve pocket in the valve pocket of valve case, the tip top of elastic component is supported the tip of case and is supplied with along axial compression elastic force to the case, form the first pressure chamber with drawing the pressure chamber intercommunication between the first end that corresponds on the first end of case and the valve case, form the second pressure chamber with bearing pressure chamber intercommunication between the second end that the second end of case and the valve case correspond the setting, the periphery wall indent in the middle part of the case is in order to form the balanced chamber with booster pump drainage chamber intercommunication with the valve pocket, be equipped with the runner that communicates balanced chamber and draw the chamber on the case, balanced chamber still is used for making booster pump drainage chamber and drawing the chamber intercommunication or making booster pump drainage chamber simultaneously with drawing the chamber and safety valve export intercommunication in order to release pressure at the case in-process of sliding.

Furthermore, a first port for communicating the pressure leading cavity and the first pressure cavity is arranged on the end surface of the first end of the valve shell; a second port for communicating a booster pump drainage cavity with the balance cavity, a third port for communicating the injection cavity with the flow channel or the balance cavity, and a fourth port for communicating the safety valve outlet with the balance cavity are sequentially arranged on the outer peripheral wall of the valve shell along the length direction of the valve shell; and a fifth port for communicating the bearing pressure cavity with the second pressure cavity is arranged on the end surface of the second end of the valve shell.

Furthermore, the number of the fourth through holes is multiple, and the multiple fourth through holes are sequentially arranged at intervals along the circumferential direction of the valve shell; the fourth port extends along the axial direction of the valve housing, and the diameter of the fourth port gradually increases in the sliding direction of the valve core.

Furthermore, the valve shell comprises a hollow cylindrical valve outer cylinder which is arranged along the extension direction of the installation cavity, a first end of the valve outer cylinder is provided with a limiting end face, a second end of the valve outer cylinder is provided with an opening, and an opening end of the valve outer cylinder is in threaded connection with an adjusting gland; a first through hole is formed in the limiting end face, and a fifth through hole is formed in the adjusting gland; the valve core and the elastic piece are sequentially arranged in the inner cavity of the valve outer barrel along the axial direction of the valve outer barrel, one end of the elastic piece abuts against the end face of the valve core, and the other end of the elastic piece abuts against the adjusting gland.

Furthermore, the adjusting gland is in a hollow cylinder shape with an opening at one end and an abutting end face at the other end; the opening end of the adjusting gland faces the valve core, and external threads are processed on the outer peripheral wall of the adjusting gland and are in threaded connection with internal threads on the inner peripheral wall of the valve outer cylinder; the fifth through hole is arranged on the abutting end face of the adjusting gland.

Furthermore, the lubricating oil pressure regulating device also comprises a sealing end cover, wherein the sealing end cover comprises a valve cover plate which is detachably arranged on the mounting end face and is used for plugging the opening of the mounting cavity, and a rotation stopping rod which is connected to the inner side wall of the valve cover plate and is used for limiting the rotation of the adjusting gland; the rotation stopping rod extends along the axial direction of the valve outer cylinder to penetrate through the adjusting gland and then extend into the elastic piece.

Furthermore, a polygonal rotation limiting spigot penetrating through the abutting end face is processed on the abutting end face of the adjusting gland; the rotation stopping rod comprises a polygonal rod part and a circular rod part, wherein the polygonal rod part is connected with the inner side wall of the valve cover plate and is matched with the rotation limiting spigot; the polygonal rod part and the circular rod part are arranged in the elastic part in a penetrating mode, and the free end of the circular rod part is used for abutting against the valve core to limit sliding of the valve core.

Furthermore, four annular mounting flanges are sequentially arranged on the outer peripheral wall of the valve housing at intervals along the length direction of the valve housing, and the outer annular wall of each mounting flange abuts against the inner peripheral wall of the mounting cavity; the cavity between the first mounting flange close to the first end of the valve shell and the closed end of the mounting cavity forms a pressure guide cavity, the cavity between the first mounting flange and the second mounting flange forms a booster pump drainage cavity, the cavity between the second mounting flange and the third mounting flange forms an injection cavity, the cavity between the third mounting flange and the fourth mounting flange forms a safety valve outlet, and the cavity between the fourth mounting flange and the open end of the mounting cavity forms a bearing pressure cavity.

Further, the outer diameter of the fourth mounting flange is greater than the outer diameter of the third mounting flange; the outer diameter of the third mounting flange is greater than the outer diameter of the second mounting flange; the second mounting flange has an outer diameter greater than an outer diameter of the first mounting flange.

Further, the mounting housing is a separately provided housing; or the mounting shell and the shell of the engine are integrally arranged.

The invention has the following beneficial effects:

when the integrated lubricating oil pressure regulating device is adopted, because the pressure of the bearing cavity is related to the sealing pressure of the bearing cavity, the oil supply and return capacity of lubricating oil, the structure of the sealing device and other factors, when the highest cavity pressure value in each bearing cavity is selected as the backpressure to be used as the regulating basic value, namely the lowest oil supply pressure difference is ensured, the pressure difference of the oil supply of the bearing cavities with the lower pressure of the rest cavities is larger, the safety of each bearing can be effectively ensured, and the damage of the bearing due to the fact that the bearing cannot be lubricated enough is avoided; when the highest bearing cavity pressure is used as the back pressure, the problem that when the atmospheric pressure is used as the back pressure, the bearing is not sufficiently lubricated when the cavity pressure is higher than the atmospheric pressure is also avoided; because the boost capacity of the booster pump to the lubricating oil is reduced along with the increase of the flying height, when the lubricating oil injected and boosted in the injection cavity is introduced to the inlet of the booster pump, namely is introduced into a lubricating oil flow path between the oil tank and the booster pump, the boosted lubricating oil is easily pumped out by the booster pump, so that the boost capacity of the booster pump to the lubricating oil can be improved, and the altitude performance of the booster pump is improved; the integrated pressure regulating device and the safety valve of the integrated lubricating oil pressure regulating device can reduce the installation space and the weight of an engine required by independently arranging the safety valve, the weight is reduced by 30 percent compared with the weight of the independently arranged pressure regulating device and the safety valve, the research on the manufacturing and adjusting method of the lubricating oil pressure regulating device of the aero-engine with the safety valve is promoted by taking the preliminary research of a 5000 kw-level turboprop engine as a guide, and the manufacturing process of each part of the integrated lubricating oil pressure regulating device is mature, and can be processed and produced in batches, so that the production cost and the manufacturing cost are greatly reduced.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of an integrated oil pressure regulator according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the adjustment gland of FIG. 1;

fig. 3 is a schematic diagram of a spatial explosion structure of the integrated oil pressure regulating device of fig. 1.

Description of the figures

10. Installing a shell; 101. mounting an end face; 103. a pressure-inducing cavity; 104. a booster pump drainage cavity; 105. an injection cavity; 106. a safety valve outlet; 107. a bearing pressure chamber; 20. a valve housing; 202. a second pressure chamber; 203. a balancing chamber; 205. a second port; 206. a third port; 207. a fourth port; 208. a fifth port; 209. a rotation limiting spigot; 21. a mounting flange; 22. an outer valve barrel; 23. adjusting a gland; 30. a booster pump; 40. an oil tank; 50. a first bearing cavity; 60. a valve core; 601. a flow channel; 70. an elastic member; 80. sealing the end cap; 81. a valve cover plate; 82. a rotation stopping rod; 90. a second bearing cavity.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1, a preferred embodiment of the present invention provides an integrated oil pressure regulating device for connection to a lubrication system of an aircraft engine, the oil pressure regulating device comprising: the mounting shell 10 is used for being connected with a shell of an aircraft engine, an inwards concave mounting cavity is arranged on a mounting end face 101 of the mounting shell 10, a hollow cylindrical valve shell 20 which is distributed along the length direction of the mounting cavity is arranged in the mounting cavity, a pressure guide cavity 103, a booster pump drainage cavity 104, an injection cavity 105, a safety valve outlet 106 and a bearing pressure cavity 107 which are sequentially distributed along the length direction of the mounting cavity are formed between the valve shell 20 and the mounting cavity, the pressure guide cavity 103 is communicated with a lubricating oil flow path at each nozzle in a lubricating system, the booster pump drainage cavity 104 is communicated with a lubricating oil flow path at an outlet of a booster pump 30 in the lubricating system, the injection cavity 105 is communicated with a lubricating oil flow path or an oil tank 40 between an oil tank 40 and the booster pump 30 in the lubricating system, the safety valve outlet 106 is communicated with the oil tank 40, and the bearing pressure cavity 107 is communicated with a first bearing cavity. The valve cavity of the valve shell 20 is internally provided with a valve core 60 and an elastic part 70 which are sequentially arranged along the axial direction of the valve cavity, the end part of the elastic part 70 is propped against the end part of the valve core 60 to supply compression elastic force along the axial direction to the valve core 60, a first pressure cavity communicated with the pressure guiding cavity 103 is formed between the first end of the valve core 60 and the corresponding first end of the valve shell 20, a second pressure cavity 202 communicated with the bearing pressure cavity 107 is formed between the second end of the valve core 60 and the corresponding second end of the valve shell 20, the peripheral wall of the middle part of the valve core 60 is inwards concave to form a balance cavity 203 communicated with the drainage cavity 104 of the booster pump with the valve cavity, and the valve core 60 is provided with a flow passage 601, the balance cavity 203 is also used for communicating the booster pump drainage cavity 104 with the ejector cavity 105 or communicating the booster pump drainage cavity 104 with both the ejector cavity 105 and the safety valve outlet 106 for pressure relief during the sliding process of the valve core 60.

When the integrated lubricating oil pressure regulating device works, the booster pump 30 pumps oil from the oil tank 40 and supplies the oil to the first bearing cavity 50, the second bearing cavity 90 and other bearing cavities, and leads the oil to the booster pump drainage cavity 104, the first bearing cavity 50 with the highest cavity pressure value in each bearing cavity is selected, the pressure of the first bearing cavity is led to the bearing pressure cavity 107, and the oil supply pressure in front of the bearing cavity, namely the oil supply pressure at each nozzle is led to the pressure leading cavity 103. The pressure of the first bearing cavity 50 is matched with the sum of the pressure of the elastic part 70 and the pressure of the oil supply in front of the bearing cavity for pressure regulation, the oil supply pressure is regulated, the pressure difference value of the sum of the pressure of the first bearing cavity 50 and the pressure of the elastic part 70 and the pressure of the oil supply in front of the bearing cavity pushes the valve core 60 to move, and when the valve core 60 is in the state shown in figure 1, redundant lubricating oil enters the injection cavity 105 through the flow channel 601 on the valve core 60 for pressure relief; when the valve core 60 moves to enable the injection cavity 105 to be directly communicated with the balance cavity 203, the redundant lubricating oil flow is directly decompressed through the injection cavity 105, and the lubricating oil decompressed from the injection cavity 105 can be led to a lubricating oil flow path between the oil tank 40 and the booster pump 30 or directly led to the oil tank 40; if the pressure of the lubricating oil is abnormal, when the pressure of the lubricating oil is not enough to be released only by the injection cavity 105, the pressure pushes the valve core 60 to move continuously so that the balance cavity 203 is directly communicated with the safety valve outlet 106, and then the pressure release is achieved to ensure the safety of the system.

When the integrated lubricating oil pressure regulating device is adopted, because the pressure of the bearing cavity is related to the sealing pressure of the bearing cavity, the oil supply and return capacity of lubricating oil, the structure of the sealing device and other factors, when the highest cavity pressure value in each bearing cavity is selected as the backpressure to be used as the regulating basic value, namely the lowest oil supply pressure difference is ensured, the pressure difference of the oil supply of the bearing cavities with the lower pressure of the rest cavities is larger, the safety of each bearing can be effectively ensured, and the damage of the bearing due to the fact that the bearing cannot be lubricated enough is avoided; when the highest bearing cavity pressure is used as the back pressure, the problem that when the atmospheric pressure is used as the back pressure, the bearing is not sufficiently lubricated when the cavity pressure is higher than the atmospheric pressure is also avoided; because the boost capacity of the booster pump 30 to the lubricating oil is reduced along with the increase of the flying height, when the lubricating oil injected and boosted in the injection cavity 105 is introduced to the inlet of the booster pump 30, namely, is introduced into the lubricating oil flow path between the oil tank 40 and the booster pump 30, the boosted lubricating oil is easily pumped out by the booster pump 30, so that the boost capacity of the booster pump 30 to the lubricating oil can be improved, and further, the altitude performance of the booster pump 30 is improved; the integrated pressure regulating device and the safety valve of the integrated lubricating oil pressure regulating device can reduce the installation space and the weight of an engine required by independently arranging the safety valve, the weight is reduced by 30 percent compared with the weight of the independently arranged pressure regulating device and the safety valve, the research on the manufacturing and adjusting method of the lubricating oil pressure regulating device of the aero-engine with the safety valve is promoted by taking the preliminary research of a 5000 kw-level turboprop engine as a guide, and the manufacturing process of each part of the integrated lubricating oil pressure regulating device is mature, and can be processed and produced in batches, so that the production cost and the manufacturing cost are greatly reduced.

Alternatively, as shown in fig. 1 and 3, a first port for communicating the pressure introduction chamber 103 and the first pressure chamber is provided on the end surface of the first end of the valve housing 20. The outer peripheral wall of the valve housing 20 is sequentially provided with a second through hole 205 for communicating the booster pump drainage cavity 104 with the balance cavity 203, a third through hole 206 for communicating the injection cavity 105 with the flow channel 601 or the injection cavity 105 with the balance cavity 203, and a fourth through hole 207 for communicating the safety valve outlet 106 with the balance cavity 203 along the length direction. A fifth port 208 for communicating the bearing pressure chamber 107 with the second pressure chamber 202 is provided on an end surface of the second end of the valve housing 20.

Preferably, as shown in fig. 3, the number of the third through holes 206 is multiple, and the multiple third through holes 206 are sequentially arranged at intervals along the circumferential direction of the valve housing 20, so as to enhance the uniformity of injecting the lubricating oil. Preferably, as shown in fig. 3, the number of the fourth through holes 207 is plural, and the plural fourth through holes 207 are sequentially arranged at intervals in the circumferential direction of the valve housing 20. Each fourth port 207 extends along the axial direction of the valve housing 20, and the diameter of each fourth port 207 is gradually increased in the sliding direction of the valve core 60, so that the continuity of the pressure adjustment of the lubricating oil is ensured, the sudden change of the lubricating oil is avoided, and the stability of the system operation is further improved.

Alternatively, as shown in fig. 1 and 2, the valve housing 20 includes a hollow cylindrical valve outer cylinder 22 arranged along the extending direction of the installation cavity, a first end of the valve outer cylinder 22 has a limit end face and a second end of the valve outer cylinder 22 is open, and an opening end of the valve outer cylinder 22 is connected with an adjusting gland 23 through threads. The limiting end face is provided with a first through hole, and the adjusting gland 23 is provided with a fifth through hole 208. The valve core 60 and the elastic element 70 are sequentially arranged in the inner cavity of the valve outer cylinder 22 along the axial direction of the valve outer cylinder 22, one end of the elastic element 70 abuts against the end surface of the valve core 60, and the other end of the elastic element 70 abuts against the adjusting gland 23. In this alternative embodiment, the resilient member 70 is a spring.

Preferably, as shown in fig. 1 and 2, the adjustment cover 23 has a hollow cylindrical shape with one end open and the other end having an abutting end surface. The open end of the adjusting gland 23 faces the valve core 60, the valve core 60 faces the second end of the adjusting gland 23 and is concave inwards to form an installation cylinder, one end of the spring is propped against the installation cylinder of the valve core 60, the other end of the spring is propped against the cylinder of the adjusting gland 23, and the spring is guaranteed to be capable of extending and retracting along the axial direction and not protruding and changing in the radial direction when compressed under stress. The outer peripheral wall of the adjusting gland 23 is provided with external threads to be in threaded connection with the internal threads on the inner peripheral wall of the valve outer cylinder 22, so that the installation of a spring is facilitated, the precompression force applied to the valve core 60 can be adjusted by rotating the adjusting gland 23, and in addition, the adjustable pressure adjusting value of the adjusting gland 23 can be adjusted by rotating each circle by replacing springs with different rigidity. As shown in fig. 2, the fifth through-hole 208 is provided on the abutting end surface of the adjustment cover 23. The number of the fifth through holes 208 is plural, and the plural fifth through holes 208 are sequentially arranged at intervals along the circumferential direction of the abutting end surface, so as to increase the area and uniformity of the flow of the lubricating oil.

Optionally, as shown in fig. 1, the oil pressure adjusting device further includes a sealing end cover 80, and the sealing end cover 80 includes a valve cover plate 81 detachably disposed on the mounting end surface 101 for closing the opening of the mounting cavity, and a rotation stopping rod 82 connected to an inner side wall of the valve cover plate 81 for limiting rotation of the adjusting gland 23. The rotation preventing rod 82 extends in the axial direction of the valve outer cylinder 22 to penetrate through the adjustment gland 23 and then to protrude into the elastic member 70. Further, as shown in fig. 2, a rotation restricting notch 209 penetrating the abutting end surface and having a polygonal shape is formed on the abutting end surface of the adjusting gland 23. In this alternative embodiment, the rotation-limiting seam 209 is formed by the intersection of two square through-openings. The rotation stopping rod 82 comprises a polygonal rod part which is connected with the inner side wall of the valve cover plate 81 and is matched with the rotation limiting stop 209, and a circular rod part which is connected with the polygonal rod part. The polygonal rod part and the circular rod part are arranged in the elastic part 70 in a penetrating mode, and the free end of the circular rod part is used for abutting against the valve core 60 to limit sliding of the valve core 60. The polygonal rod portion can be inserted into the rotation limiting spigot 209 of the adjusting gland 23 after the pressure of the spring is continuously adjusted, so that the adjusting gland 23 can be locked immediately, and looseness caused by vibration and the like in the process of an engine test is avoided. The free end of the round rod part is used for abutting against the valve core 60 to limit the sliding of the valve core 60, and the valve core 60 is prevented from being excessively moved to cause clamping stagnation.

Alternatively, as shown in fig. 1, four annular mounting flanges 21 are sequentially provided at intervals on the outer circumferential wall of the valve housing 20 in the longitudinal direction of the valve housing 20, and the outer circumferential wall of each mounting flange 21 abuts against the inner circumferential wall of the mounting cavity. The cavity between the first mounting flange 21 close to the first end of the valve housing 20 and the closed end of the mounting cavity forms a pressure guide cavity 103, the cavity between the first mounting flange 21 and the second mounting flange 21 forms a booster pump drainage cavity 104, the cavity between the second mounting flange 21 and the third mounting flange 21 forms an injection cavity 105, the cavity between the third mounting flange 21 and the fourth mounting flange 21 forms a safety valve outlet 106, and the cavity between the fourth mounting flange 21 and the open end of the mounting cavity forms a bearing pressure cavity 107.

Preferably, as shown in fig. 1 and 3, the outer diameter of the fourth mounting flange 21 is larger than the outer diameter of the third mounting flange 21. The outer diameter of the third mounting flange 21 is larger than the outer diameter of the second mounting flange 21. The second mounting flange 21 has an outer diameter greater than the outer diameter of the first mounting flange 21. On the premise of ensuring that the structural requirements are met, the valve housing 20 adopts the structural form, so that the sealing isolation between the adjacent cavities is ensured, the process is rationalized, and the valve housing 20 is easy to install and disassemble. Further, a seal ring for sealing a gap between the outer circumferential wall of each mounting flange 21 and the inner circumferential wall of the mounting cavity is provided therebetween.

Preferably, the mounting housing 10 is a separately provided housing, which facilitates the manufacture and processing of the mounting housing 10. Or the mounting case 10 is integrally provided with the case of the engine, the overall structural strength can be improved, and the weight of the engine can be reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An integrated oil pressure regulation device for connection in a lubrication system of an aircraft engine, the oil pressure regulation device comprising: the mounting structure comprises a mounting shell (10) connected with a shell of the aircraft engine, wherein an inwards concave mounting cavity is arranged on a mounting end face (101) of the mounting shell (10), a hollow cylindrical valve shell (20) which is arranged along the length direction of the mounting cavity is arranged in the mounting cavity, a valve core (60) and an elastic piece (70) which are sequentially arranged along the axial direction of the valve cavity are arranged in the valve cavity of the valve shell (20), the end part of the elastic piece (70) is propped against the end part of the valve core (60) so as to supply axial compression elastic force to the valve core (60), and the mounting structure is characterized in that,
a pressure guide cavity (103), a booster pump drainage cavity (104), an injection cavity (105), a safety valve outlet (106) and a bearing pressure cavity (107) which are sequentially arranged along the length direction of the installation cavity are formed between the valve shell (20) and the installation cavity, the pressure guide cavity (103) is communicated with a lubricating oil flow path at each nozzle in the lubricating system, the booster pump drainage cavity (104) is communicated with a lubricating oil flow path at an outlet of a booster pump (30) in the lubricating system, the injection cavity (105) is communicated with a lubricating oil flow path between an oil tank (40) in the lubricating system and the booster pump (30) or the oil tank (40), the safety valve outlet (106) is communicated with the oil tank (40), and the bearing pressure cavity (107) is communicated with a first bearing cavity (50) with the highest cavity pressure in the lubricating system;
a first pressure cavity communicated with the pressure guide cavity (103) is formed between the first end of the valve core (60) and the corresponding first end of the valve shell (20), a second pressure chamber (202) communicated with the bearing pressure chamber (107) is formed between the second end of the valve core (60) and the second end correspondingly arranged to the valve shell (20), the peripheral wall of the middle part of the valve core (60) is concave to form a balance cavity (203) communicated with the booster pump drainage cavity (104) with the valve cavity, a flow channel (601) which is communicated with the balance cavity (203) and the injection cavity (105) is arranged on the valve core (60), the balance cavity (203) is also used for communicating the booster pump drainage cavity (104) with the injection cavity (105) or communicating the booster pump drainage cavity (104) with the injection cavity (105) and the safety valve outlet (106) simultaneously so as to release pressure in the sliding process of the valve core (60).
2. The integrated oil pressure regulation device of claim 1,
a first through hole for communicating the pressure guide cavity (103) with the first pressure cavity is formed in the end face of the first end of the valve shell (20);
a second through hole (205) for communicating the booster pump drainage cavity (104) with the balance cavity (203), a third through hole (206) for communicating the injection cavity (105) with the flow channel (601) or communicating the injection cavity (105) with the balance cavity (203), and a fourth through hole (207) for communicating the safety valve outlet (106) with the balance cavity (203) are sequentially arranged on the outer peripheral wall of the valve housing (20) along the length direction of the valve housing;
and a fifth port (208) for communicating the bearing pressure chamber (107) with the second pressure chamber (202) is arranged on the end surface of the second end of the valve shell (20).
3. The integrated oil pressure regulation device of claim 2,
the number of the fourth through holes (207) is multiple, and the multiple fourth through holes (207) are sequentially arranged at intervals along the circumferential direction of the valve shell (20);
the fourth through hole (207) extends in the axial direction of the valve housing (20), and the diameter of the fourth through hole (207) gradually increases in the sliding direction of the spool (60).
4. The integrated oil pressure regulation device of claim 2,
the valve shell (20) comprises a hollow cylindrical valve outer cylinder (22) which is arranged along the extension direction of the installation cavity, a first end of the valve outer cylinder (22) is provided with a limiting end face, a second end of the valve outer cylinder (22) is opened, and an opening end of the valve outer cylinder (22) is connected with an adjusting gland (23) in a threaded mode;
the first through hole is formed in the limiting end face, and the fifth through hole (208) is formed in the adjusting gland (23);
the valve core (60) and the elastic piece (70) are sequentially arranged in an inner cavity of the valve outer cylinder (22) along the axial direction of the valve outer cylinder (22), one end of the elastic piece (70) abuts against the end face of the valve core (60), and the other end of the elastic piece (70) abuts against the adjusting gland (23).
5. The integrated oil pressure regulation device of claim 4,
the adjusting gland (23) is in a hollow cylinder shape with an opening at one end and an abutting end face at the other end;
the opening end of the adjusting gland (23) faces the valve core (60), and external threads are processed on the outer peripheral wall of the adjusting gland (23) to be in threaded connection with internal threads on the inner peripheral wall of the valve outer cylinder (22);
the fifth through hole (208) is arranged on the abutting end face of the adjusting gland (23).
6. The integrated oil pressure regulation device of claim 5,
the lubricating oil pressure adjusting device further comprises a sealing end cover (80), wherein the sealing end cover (80) comprises a valve cover plate (81) which is detachably arranged on the mounting end surface (101) and used for plugging an opening of the mounting cavity, and a rotation stopping rod (82) which is connected to the inner side wall of the valve cover plate (81) and used for limiting the rotation of the adjusting gland (23);
the rotation stopping rod (82) extends along the axial direction of the valve outer cylinder (22) to penetrate through the adjusting gland (23) and then extends into the elastic piece (70).
7. The integrated oil pressure regulation device of claim 6,
a polygonal rotation limiting spigot (209) penetrating through the abutting end face is processed on the abutting end face of the adjusting gland (23);
the rotation stopping rod (82) comprises a polygonal rod part and a circular rod part, wherein the polygonal rod part is connected with the inner side wall of the valve cover plate (81) and is matched with the rotation limiting stop opening (209);
the polygonal rod part and the circular rod part are arranged in the elastic part (70) in a penetrating mode, and the free end of the circular rod part is used for abutting against the valve core (60) to limit sliding of the valve core (60).
8. The integrated oil pressure regulation device of claim 1,
four annular mounting flanges (21) are sequentially arranged on the outer peripheral wall of the valve housing (20) at intervals along the length direction of the valve housing (20), and the outer annular wall of each mounting flange (21) abuts against the inner peripheral wall of the mounting cavity;
close to the first of valve case (20) first end mounting flange (21) with cavity between the mounting chamber closed end forms pressure chamber (103), first mounting flange (21) and second cavity between mounting flange (21) forms booster pump drainage chamber (104), the second mounting flange (21) and third cavity between mounting flange (21) forms draw and penetrate chamber (105), the third mounting flange (21) and fourth cavity between mounting flange (21) forms safety valve export (106), the fourth mounting flange (21) with cavity between the mounting chamber open end forms bearing pressure chamber (107).
9. The integrated oil pressure regulation device of claim 8,
the outer diameter of the fourth mounting flange (21) is larger than the outer diameter of the third mounting flange (21);
the outer diameter of the third mounting flange (21) is larger than that of the second mounting flange (21);
the second of said mounting flanges (21) has an outer diameter greater than the outer diameter of the first of said mounting flanges (21).
10. The integrated oil pressure regulation device of claim 1,
the mounting shell (10) is a separately arranged shell; or
The mounting housing (10) is integrally provided with a housing of the engine.
CN201910198100.2A 2019-03-15 2019-03-15 Integrated lubricating oil pressure regulating device CN109945060B (en)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1422367A (en) * 2001-02-21 2003-06-04 三菱重工业株式会社 Self-contained regulating valve, and compression type refrigerating machine having the same
CN1699777A (en) * 2004-05-06 2005-11-23 伊顿公司 Integrated valve system
CN101025139A (en) * 2006-02-23 2007-08-29 株式会社电装 Adjusting device
JP2007315473A (en) * 2006-05-25 2007-12-06 Kayaba Ind Co Ltd Priority valve
CN102466120A (en) * 2010-10-28 2012-05-23 现代自动车株式会社 Relief valve for oil pump
CN102472129A (en) * 2009-08-07 2012-05-23 德尔菲技术公司 Bottom feed oil flow control valve for a cam phaser
CN102575806A (en) * 2009-08-28 2012-07-11 鲍伯艾菲尔德有限公司 Improved system for automatic lubrication
CN203131397U (en) * 2013-01-23 2013-08-14 中国航空动力机械研究所 Pressure regulating and overpressure protection integrating device for lubricating oil system
CN103459780A (en) * 2010-10-20 2013-12-18 涡轮梅坎公司 Lubricating device having a bypass valve
CN105387324A (en) * 2015-12-14 2016-03-09 中国航空工业集团公司金城南京机电液压工程研究中心 Oil supply device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1422367A (en) * 2001-02-21 2003-06-04 三菱重工业株式会社 Self-contained regulating valve, and compression type refrigerating machine having the same
CN1699777A (en) * 2004-05-06 2005-11-23 伊顿公司 Integrated valve system
CN101025139A (en) * 2006-02-23 2007-08-29 株式会社电装 Adjusting device
JP2007315473A (en) * 2006-05-25 2007-12-06 Kayaba Ind Co Ltd Priority valve
CN102472129A (en) * 2009-08-07 2012-05-23 德尔菲技术公司 Bottom feed oil flow control valve for a cam phaser
CN102575806A (en) * 2009-08-28 2012-07-11 鲍伯艾菲尔德有限公司 Improved system for automatic lubrication
CN103459780A (en) * 2010-10-20 2013-12-18 涡轮梅坎公司 Lubricating device having a bypass valve
CN102466120A (en) * 2010-10-28 2012-05-23 现代自动车株式会社 Relief valve for oil pump
CN203131397U (en) * 2013-01-23 2013-08-14 中国航空动力机械研究所 Pressure regulating and overpressure protection integrating device for lubricating oil system
CN105387324A (en) * 2015-12-14 2016-03-09 中国航空工业集团公司金城南京机电液压工程研究中心 Oil supply device

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