Temperature control lubricating oil flow device

Abstract

The utility model discloses a temperature control lubricating oil flow device which is mainly composed of a shell, a nut, a shaft, a temperature sensing element, a sliding ring, a sealing ring and the like, and the temperature sensing element drives the sliding ring to rotate to achieve flow control. The temperature control lubricating oil flow device can be used on an engine pipeline, the temperature control lubricating oil flow device can divide lubricating oil flowing into the temperature control lubricating oil flow device into two strands of lubricating oil with different flows under the condition of different lubricating oil temperatures, one strand of lubricating oil flows into the radiator to be cooled, the cooled lubricating oil is mixed with the other strand of lubricating oil which is not cooled, and the lubricating oil is cooled. Therefore, the temperature of lubricating oil flowing into an engine lubricating oil system is kept within a specified range, and finally normal work of an engine can be guaranteed. The utility model has the advantages of light weight, compact structure, simplicity in processing and manufacturing, high stability and better maintainability.

Description

Technical Field

[0001] The utility model belongs to the technical field of aviation engine lubricating oil systems, in particular to an aviation lubricating oil temperature flow control device. Background Art

[0002] The conventional aircraft engine oil control device has complex structure, difficult processing and unstable functions, especially in high temperature environment, which is prone to electronic component failure. In order to solve the above problems, it is urgent to design a device that can meet the flow control of the aircraft engine oil system. Summary of the invention

[0003] In response to the problems recorded in the background technology, the utility model aims to provide a temperature-controlled lubricating oil flow device to solve the problems of complex structure, difficult processing and unstable functions of flow control accessories in conventional aircraft engine lubricating oil systems, especially the problem of flow control failure caused by failure of electronic components under high temperature conditions, to ensure that the lubricating oil enters the lubricating oil system at the temperature and flow rate required by technology.

[0004] In order to solve the above problems, the utility model adopts the following technical solutions:

[0005] A temperature-controlled lubricating oil flow device, comprising:

[0006] A housing, wherein a cavity is formed inside the housing, and a first lubricating oil inlet, a second lubricating oil inlet, a lubricating oil outlet, and a mounting interface are provided on the surface of the housing;

[0007] The shaft is a hollow shaft and is inserted into the cavity of the housing. The two axial ends of the shaft are open to form a first oil outlet and a second oil outlet, respectively. The interior of the shaft comprises a first oil chamber and a second oil chamber separated from each other. The first oil chamber is connected to the first oil outlet, and the second oil chamber is connected to the second oil outlet. The shaft is provided with two through holes with axes parallel to each other, thereby forming four oil inlet slots on the surface of the shaft, two of which are connected to the first oil chamber, and the other two are connected to the second oil chamber.

[0008] A sealing ring, which is arranged between the outer surface of the shaft and the inner wall of the cavity of the housing, and divides the cavity of the housing into two left and right cavities which are connected only through the second oil outlet, wherein the right cavity is connected to the second lubricating oil inlet and the lubricating oil outlet respectively;

[0009] A temperature sensing element, the temperature sensing element comprising a temperature sensing spring and a supporting ring, the temperature sensing spring being sleeved on the outside of the shaft in a cylindrical spiral shape with the shaft as the axis and being located in the cavity of the shell, the axial first end of the temperature sensing spring being fixedly connected to the shaft, the supporting ring being a cylindrical shell and being located inside the temperature sensing spring, the supporting ring being connected to the axial second end of the temperature sensing spring, and the supporting ring being provided with two through holes with axes perpendicular to each other, thereby forming four openings on the surface of the supporting ring;

[0010] The slip ring is located inside the support ring and is slidably connected to the outer surface of the shaft through the inner surface of the slip ring itself. The outer surface of the slip ring contacts the inner cylindrical surface of the support ring through a plurality of protrusions. The slip ring is provided with two through holes with axes perpendicular to each other, thereby forming four openings on the surface of the slip ring;

[0011] When the temperature-sensitive spring is at the lowest working temperature of the lubricating oil, the inner surface of the slip ring completely blocks the two oil inlet slots of the first oil chamber on the shaft, and at the same time, there are two openings on the slip ring surface that are connected to the two oil inlet slots of the second oil chamber and are at the maximum opening; at this time, the axis of the through hole on the support ring away from the second oil chamber is parallel to the connecting line of the two oil inlet slots of the first oil chamber;

[0012] When the temperature-sensitive spring is at the highest working temperature of the lubricating oil, the inner surface of the slip ring completely blocks the two oil inlet slots of the second oil chamber on the shaft, and at the same time, there are two openings on the surface of the slip ring that are connected to the two oil inlet slots of the first oil chamber and are at the maximum opening; at this time, the axis of the through hole on the support ring away from the first oil chamber is parallel to the connecting line of the two oil inlet slots of the second oil chamber;

[0013] When the temperature-sensing spring is between the normal operating temperature of the lubricating oil and the maximum operating temperature of the lubricating oil, the inner surface of the slip ring partially blocks the two oil inlet slots of the first oil chamber and the two oil inlet slots of the second oil chamber on the shaft, so that two openings on the slip ring surface are partially connected to the two oil inlet slots of the second oil chamber, and the other two openings are partially connected to the two oil inlet slots of the first oil chamber.

[0014] Furthermore, inner walls of the first lubricating oil inlet, the second lubricating oil inlet and the lubricating oil outlet of the housing are processed with internal threads for connection.

[0015] Furthermore, an external connection thread is processed on the outer wall of the shell corresponding to the installation interface of the shell, and the shell is pressed against the shaft by a nut sleeved on the external thread.

[0016] Furthermore, at least one anti-loosening fuse hole is respectively formed on the shell and the nut, and a fuse for binding the shell and the nut is inserted into the anti-loosening fuse hole.

[0017] Furthermore, an internal thread for connection is processed on the inner wall of the second oil outlet of the shaft.

[0018] Furthermore, the first oil outlet of the shaft is connected to the hot side channel inlet of the radiator, and the hot side channel outlet of the radiator is connected to the second lubricating oil inlet.

[0019] Compared with the prior art, the housing, nut, sealing ring, shaft, temperature sensing element and sealing ring in the temperature-controlled lubricating oil flow device of the utility model can be completed by conventional mechanical processing, the structure is relatively simple and the processing difficulty is low.

[0020] Compared with the prior art, the temperature-controlled lubricating oil flow device of the utility model is mainly composed of a housing, a nut, a sealing ring, a shaft, a temperature-sensing element and a sealing ring. Since no electronic components are used for temperature sensing and flow control, but pure mechanical components are used to realize temperature sensing and flow control, the reliability is high and it is not easy to fail in a high temperature and complex environment. The temperature-sensing element can produce deformation under the condition that the lubricating oil temperature changes, thereby driving the slip ring to move axially while realizing circumferential rotation, thereby controlling the opening of the oil inlet slots on the first oil chamber and the second oil chamber, and realizing the control of the flow of lubricating oils of different temperatures through the opening of the oil inlet slots. The utility model divides the interior of the temperature-controlled lubricating oil flow device into two channels, and the lubricating oil at normal working temperature passes directly, and the lubricating oil with a temperature exceeding the normal working temperature is cooled by the radiator and mixed with the lubricating oil above the normal working temperature, and finally ensures that the lubricating oil flow and temperature flowing into the engine lubricating oil system are within the range specified by the lubricating oil system, thereby ensuring the normal operation of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional structural diagram when the temperature-controlled lubricating oil flow device is at the normal working temperature of the lubricating oil and the lubricating oil flows directly into the lubricating oil system;

[0022] Figure 2 It is a cross-sectional structural diagram of the temperature-controlled lubricating oil flow device when the lubricating oil is at the highest operating temperature and flows into the radiator for cooling and then flows into the lubricating oil system;

[0023] Figure 3 yes Figure 1 A three-dimensional exploded view of the medium temperature oil flow control device;

[0024] Figure 4 It is the structural diagram of the slip ring;

[0025] Figure 5 It is the structural diagram of the axis;

[0026] Figure 6 It is the structural diagram of the temperature sensing element;

[0027] Figure 7 It is the structural diagram of the temperature-sensitive spring;

[0028] Figure 8 is a structural diagram of the support ring;

[0029] In the figure: 1. shaft, 2. nut, 3. housing, 4. temperature sensing element, 5. slip ring, 6. sealing ring. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0031] like Figures 1 to 8 As shown, the temperature-controlled lubricating oil flow device in this embodiment includes a shaft 1, a nut 2, a housing 3, a temperature sensing element 4, a slip ring 5 and a sealing ring 6. Figure 1 and Figure 2 The hollow arrows in the figure represent the flow direction and path of the lubricating oil. Figure 2 The solid arrows and straight lines in the figure represent the direction and path of the lubricating oil exceeding the normal operating temperature flowing from the first oil outlet into the radiator and then entering the second lubricating oil inlet after being cooled.

[0032] like Figure 1 to Figure 3 As shown, a cavity is formed inside the shell 3, and a first lubricating oil inlet, a second lubricating oil inlet, a lubricating oil outlet and a mounting interface are provided on the surface of the shell 3; internal threads for connection are processed on the inner walls of the first lubricating oil inlet, the second lubricating oil inlet and the lubricating oil outlet of the shell 3; external threads for connection are processed on the outer wall of the shell 3 corresponding to the mounting interface of the shell 3, and the shell 3 presses the shaft 1 by means of a nut 2 sleeved on the external threads, thereby ensuring that the shaft 1 will not detach from the shell 3; an anti-loosening fuse hole is respectively provided on the shell 3 and the nut 2, and a fuse for binding the shell 3 and the nut 2 is inserted in the anti-loosening fuse hole.

[0033] like Figure 5 , shaft 1 is a hollow shaft and is inserted into the cavity of housing 3. Both axial ends of shaft 1 are open, forming a first oil outlet and a second oil outlet respectively. The interior of shaft 1 includes a first oil chamber and a second oil chamber separated from each other. The first oil chamber is connected to the first oil outlet, and the second oil chamber is connected to the second oil outlet. Two through holes with axes parallel to each other are opened on shaft 1, so that four oil inlet grooves are formed on the surface of shaft 1, two of which are connected to the first oil chamber, and the other two are connected to the second oil chamber; the inner wall of the second oil outlet of shaft 1 is processed with an internal thread for connection; Figure 2 The first oil outlet of shaft 1 is connected to the hot side channel inlet of the radiator, and the hot side channel outlet of the radiator is connected to the second lubricating oil inlet, so that the lubricating oil that exceeds the normal operating temperature flowing out of the first oil outlet is cooled and then flows into the second lubricating oil inlet to mix with the lubricating oil from the second oil chamber and then flows into the lubricating oil system from the lubricating oil outlet.

[0034] like Figure 1 to Figure 3 The sealing ring 6 is arranged between the outer surface of the shaft 1 and the inner wall of the cavity of the housing 3, and divides the cavity of the housing 3 into two left and right cavities connected only by the second oil outlet, wherein the right cavity is connected to the second lubricating oil inlet and the lubricating oil outlet respectively.

[0035] like Figure 6 to Figure 8 As shown, the temperature sensing element 4 includes a temperature sensing spring and a supporting ring. The temperature sensing spring is cylindrically spirally sleeved on the outside of the shaft 1 with the shaft 1 as the axis and is located in the cavity of the shell 3. The axial first end of the temperature sensing spring is fixedly connected to the shaft 1. The supporting ring is a cylindrical shell and is located inside the temperature sensing spring. The supporting ring is connected to the axial second end of the temperature sensing spring. The supporting ring is provided with two through holes with axes perpendicular to each other, thereby forming four openings on the surface of the supporting ring.

[0036] like Figure 1 , Figure 2 and Figure 4 The slip ring 5 is located inside the supporting ring and is slidably connected to the outer surface of the shaft 1 through the inner surface of the slip ring 5 itself. The outer surface of the slip ring 5 contacts the inner cylindrical surface of the supporting ring through a plurality of protrusions. The slip ring 5 is provided with two through holes whose axes are perpendicular to each other, thereby forming four openings on the surface of the slip ring 5.

[0037] The shaft 1, the slip ring 5 and the temperature sensing element 4 are coaxially installed in the cavity of the housing 3. Under different lubricating oil temperature conditions, the temperature sensing element 4 can rotate and move axially to distribute the lubricating oil to different channels inside the shaft 1 according to its temperature, namely the first oil chamber and the second oil chamber. The opening on the slip ring 5 and the overlapping state of the oil inlet on the shaft 1 are used to control the opening, thereby controlling the flow of lubricating oil at different temperatures. On the one hand, the support ring plays the role of supporting the temperature sensing spring to prevent bending, and on the other hand, it ensures the axial movement and circumferential rotation of the temperature sensing spring relative to the lubricating oil. The surface of the slip ring 5 is provided with multiple protrusions to ensure a stable gap and coaxiality between the slip ring 5 and the support ring.

[0038] The temperature sensing element 4 on the outside of the shaft 1 is in the shape of a cylindrical spiral. Under different temperature conditions, the temperature sensing spring can extend or contract. Since one end of the temperature sensing spring is fixed on the slip ring 5 and the other end is fixed on the support ring, the temperature sensing spring can drive the slip ring 5 and the support ring to rotate relative to each other during the extension or contraction process. Figure 1 and Figure 2As shown, the relative rotation between the slip ring 5 and the support ring is about 90°. Since the opening on the slip ring 5 and the oil inlet notches of the first oil chamber and the second oil chamber on the shaft 1 are offset and overlapped, that is, the normal working temperature of the lubricating oil is taken as the critical point, when it is lower than the critical temperature point, two of the four openings on the slip ring 5 are not connected with the two oil inlet notches of the first oil chamber, and the other two openings on the slip ring 5 are at the maximum opening and directly connected with the two oil inlet grooves of the second oil chamber. When the lubricating oil is higher than the critical temperature point and lower than the maximum working temperature, two of the four openings on the slip ring 5 are partially connected with the two oil inlet notches of the second oil chamber (that is, the opening is between the maximum and the minimum), and the other two openings on the slip ring 5 are also partially connected with the two oil inlet notches of the first oil chamber. At this time, the lubricating oil flowing into the first lubricating oil inlet is divided into two parts, one part enters the first oil chamber, and the other part enters the second oil chamber. The lubricating oil flowing into the first oil chamber reaches the radiator through the first oil outlet, and after cooling, flows into the second lubricating oil inlet through the external pipeline and mixes with the lubricating oil flowing out of the second oil outlet of the second oil chamber. When the lubricating oil temperature reaches the highest working temperature, two of the four openings on the slip ring 5 are connected to the two oil inlet slots of the first oil chamber and are at the maximum opening. At this time, the other two openings on the slip ring 5 are not connected to the two oil inlet slots of the second oil chamber. Therefore, after selecting the material and size of the temperature-sensitive spring according to the lubricating oil working temperature range, the size of the oil inlet slot and the opening on the slip ring 5 can be determined according to the above principles. The role of the four openings on the support ring is, on the one hand, to reduce the deadweight and facilitate the flow of lubricating oil to the slip ring 5, and on the other hand, to prevent the lubricating oil from directly impacting the oil inlet slot with a larger flow rate (the oil inlet slot with a smaller flow rate is just in the opening area of ​​the support ring at this time, and the lubricating oil flows directly), resulting in inaccurate flow control. This structural design can guide the lubricating oil to flow in from the surroundings of the oil inlet slot, rather than directly facing the oil inlet slot.

[0039] like Figure 1 , Figure 2 and Figure 5 Under the action of the temperature sensing element 4, the shaft 1 and the slip ring 5 rotate relative to each other, and the opening or inner wall surface of the slip ring 5, the shaft 1 and the oil inlet slot are used to adjust the opening of the two oil inlet slots of the first oil chamber and the two oil inlet slots of the second oil chamber on the shaft 1, thereby controlling the flow of lubricating oils of different temperatures.

[0040] The shell 3 is made of stainless steel and can be used normally under salt spray and acidic atmospheric conditions.

[0041] The sealing ring 6 is made of fluoroether rubber, which can ensure that the device does not leak under high and low temperature environmental conditions, and ensure that the lubricating oil can only flow out from the second oil outlet of the second oil chamber of the shaft 1 to the lubricating oil outlet, and cannot flow in from other positions in the cavity of the housing 3, thereby ensuring the accuracy of flow regulation.

[0042] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A temperature control lubricating oil flow device, characterized in that: include: A housing (3), wherein a cavity is formed inside the housing (3), and a first lubricating oil inlet, a second lubricating oil inlet, a lubricating oil outlet and a mounting interface are provided on a surface of the housing (3); A shaft (1), wherein the shaft (1) is a hollow shaft and is inserted into a cavity of a housing (3), the two axial ends of the shaft (1) are open, forming a first oil outlet and a second oil outlet respectively, the interior of the shaft (1) comprises a first oil chamber and a second oil chamber separated from each other, the first oil chamber is connected to the first oil outlet, the second oil chamber is connected to the second oil outlet, the shaft (1) is provided with two through holes with axes parallel to each other, thereby forming four oil inlet slots on the surface of the shaft (1), two of which are connected to the first oil chamber, and the other two are connected to the second oil chamber; A sealing ring (6), the sealing ring (6) being arranged between the outer surface of the shaft (1) and the inner wall of the cavity of the housing (3), and dividing the cavity of the housing (3) into two left and right cavities which are connected only through the second oil outlet, wherein the right cavity is respectively connected to the second lubricating oil inlet and the lubricating oil outlet; A temperature sensing element (4), the temperature sensing element (4) comprising a temperature sensing spring and a supporting ring, the temperature sensing spring being sleeved on the outside of the shaft (1) in a cylindrical spiral shape with the shaft (1) as the axis and being located in the cavity of the housing (3), the axial first end of the temperature sensing spring being fixedly connected to the shaft (1), the supporting ring being a cylindrical housing and being located inside the temperature sensing spring, the supporting ring being connected to the axial second end of the temperature sensing spring, the supporting ring being provided with two through holes with axes perpendicular to each other, thereby forming four openings on the surface of the supporting ring; A slip ring (5), the slip ring (5) being located inside the support ring and being slidably connected to the outer surface of the shaft (1) through the inner surface of the slip ring (5), the outer surface of the slip ring (5) being in contact with the inner cylindrical surface of the support ring through a plurality of protrusions, and the slip ring (5) being provided with two through holes whose axes are perpendicular to each other, thereby forming four openings on the surface of the slip ring (5); When the temperature-sensitive spring is at the normal working temperature of the lubricating oil, the inner surface of the slip ring (5) completely blocks the two oil inlet slots of the first oil chamber on the shaft (1), and at the same time, the surface of the slip ring (5) has two openings that are connected to the two oil inlet slots of the second oil chamber and are at the maximum opening; When the temperature-sensitive spring is at the highest operating temperature of the lubricating oil, the inner surface of the slip ring (5) completely blocks the two oil inlet slots of the second oil chamber on the shaft (1), and at the same time, two openings on the surface of the slip ring (5) are connected to the two oil inlet slots of the first oil chamber and are at the maximum opening; When the temperature-sensitive spring is between the normal operating temperature of the lubricating oil and the maximum operating temperature of the lubricating oil, the inner surface of the sliding ring (5) partially blocks the two oil inlet slots of the first oil chamber and the two oil inlet slots of the second oil chamber on the shaft (1), so that two openings on the surface of the sliding ring (5) are partially connected to the two oil inlet slots of the second oil chamber, and the other two openings are partially connected to the two oil inlet slots of the first oil chamber.

2. A temperature-controlled lubricating oil flow device according to claim 1, characterized in that: Internal threads for connection are processed on the inner walls of the first lubricating oil inlet, the second lubricating oil inlet and the lubricating oil outlet of the housing (3).

3. A temperature-controlled lubricating oil flow device according to claim 1, characterized in that: An external thread for connection is processed on the outer wall of the shell (3) corresponding to the installation interface of the shell (3), and the shell (3) is pressed against the shaft (1) by a nut (2) sleeved on the external thread.

4. A temperature-controlled lubricating oil flow device according to claim 3, characterized in that: At least one anti-loosening fuse hole is respectively formed on the housing (3) and the nut (2), and a fuse for binding the housing (3) and the nut (2) is inserted into the anti-loosening fuse hole.

5. The temperature control lubricating oil flow device according to claim 1, characterized in that: An internal thread for connection is processed on the inner wall of the second oil outlet of the shaft (1).

6. A temperature-controlled lubricating oil flow device according to claim 1, characterized in that: The first oil outlet of the shaft (1) is connected to the hot side channel inlet of the radiator, and the hot side channel outlet of the radiator is connected to the second lubricating oil inlet.

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