Metal piston ring sealing ring and bearing seat

Abstract

The metal piston ring sealing ring is suitable for sealing an aviation bearing seat and comprises a piston ring body, the body is made of metal materials, first graphite layers are arranged on the axial side faces of the body, second graphite layers are arranged on the notch end faces of the body, and the first graphite layers and the second graphite layers are made of metal materials. The first graphite layer is used for preventing the body from locally deforming in a high-temperature environment, and the second graphite layer is used for preventing the end face of the notch from being corroded by lubricating oil, so that the sealing performance of the body is integrally improved, and a graphite sealing ring can be replaced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sealing element for aviation, especially relates to a metal expansion ring sealing ring and bearing seat. BACKGROUND

[0002] The graphite sealing ring is widely used in many industrial applications, especially in high temperature, high pressure and corrosive environment. Its advantages, such as high temperature resistance, good chemical stability and low friction coefficient, but its processing performance is poor, the processing of graphite sealing ring is more complex, need to use special tools and technology, cause the overall processing cost is higher. SUMMARY

[0003] Therefore, the metal expansion ring sealing ring solves the technical problem of high processing cost of the graphite sealing ring in the prior art.

[0004] A metal expansion ring sealing ring is suitable for sealing of an aviation bearing seat, comprising a body of an expansion ring, wherein the body is made of a metal material, and wherein,

[0005] The axial side surface of the body is provided with a first graphite layer, and the cutout end surface of the body is provided with a second graphite layer, the first graphite layer is used to prevent the body from being locally deformed in a high temperature environment, and the second graphite layer is used to prevent the cutout end surface from being corroded by lubricating oil.

[0006] Preferably or optionally, the thickness of the first graphite layer is greater than the thickness of the second graphite layer.

[0007] Preferably or optionally, the thickness of the first graphite layer is 0.8-1.2mm.

[0008] Preferably or optionally, the thickness of the second graphite layer is 0.1-0.2mm.

[0009] Secondly, a bearing seat is provided, which is suitable for mounting of an aviation shaft, and characterized in that it comprises the metal expansion ring sealing ring.

[0010] Preferably or optionally, it further comprises a rotating support, the rotating support is assembled on the shaft with a part of length in an interference manner, the outer ring surface of the rotating support is provided with mounting grooves at intervals, the width of the mounting grooves is matched with the thickness of the body, and the body is mounted, wherein,

[0011] The shaft is mounted on the bearing seat through the rotating support, and the sealing performance of the shaft can be improved.

[0012] The utility model discloses a technical beneficial effect:

[0013] The utility model discloses a structure, through setting up first graphite layer and second graphite layer on the body, enhance the high temperature resistance, corrosion resistance, wear resistance of body, and graphite material self -lubricating property is good, production efficiency is high, and the expansion coefficient is low, and it is not easy to deform under the environment of temperature change is bigger, can effectively promote the body sealing performance, can replace the use of graphite sealing ring, reduce the processing cost of sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present disclosure, the drawings needed to be used in the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a top view of metal expansion ring sealing ring;

[0016] Figure 2 It is a schematic view of setting the notch for metal expansion ring sealing ring;

[0017] Figure 3 It is a top view of rotating support;

[0018] Figure 4 It is a sectional view of setting installation groove, wherein,

[0019] 1, body;11, first graphite layer;12, second graphite layer;2, rotating support;21, installation groove. DETAILED DESCRIPTION

[0020] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0021] The embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0022] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this disclosure, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functionalities besides one or more of the aspects set forth herein.

[0023] like Figures 1 to 4 The metal expansion ring shown is suitable for sealing aircraft bearing housings. It includes a body 1 of the expansion ring, which is made of metal. (See attached image.) Figure 2 As shown, a first graphite layer 11 is provided on both axial sides of the body 1, that is, a first graphite layer 11 is provided on both sides. The body 1 is arranged in a discontinuous annular structure with cutouts, see [reference]. Figure 1 As shown, a second graphite layer 12 is provided on the cut end face of the body 1. The first graphite layer 11 is used to prevent local deformation of the body 1 under high temperature environment, thereby reducing the sealing performance of the metal expansion ring or increasing the service life of the metal expansion ring. Generally, the working environment of aerospace components is a high temperature and high pressure environment, and the metal expansion ring is prone to local deformation. Once deformation occurs, the sealing performance of the metal expansion ring is reduced. The second graphite layer 12 is used to prevent the cut end face from being corroded by lubricating oil and to improve the wear resistance, high temperature resistance and self-lubricating performance of the cut end face. Generally, the airborne lubricating oil system fills the bearing housing with lubricating oil, which will corrode the cut end face of the metal body 1. Through this structural setting, the metal expansion ring can replace the use of pure graphite ring. The cost of graphite ring is higher than that of metal expansion ring, and the processing difficulty is greater.

[0024] Preferably, the thickness of the first graphite layer 11 is greater than the thickness of the second graphite layer 12. For example, the thickness of the first graphite layer 11 is 0.8-1.2 mm, and the thickness of the second graphite layer 12 is 0.1-0.2 mm. The expansion ring is made of metal and has good sealing performance, but it is easily affected by temperature and is not suitable for soft seals. Leakage may occur in practical applications. The design of the first graphite layer 11 and the second graphite layer 12 enhances high-temperature resistance, corrosion resistance, and wear resistance. Furthermore, graphite material has good self-lubricating properties, high production efficiency, and a low coefficient of expansion, making it less prone to deformation under large temperature variations. This avoids large gaps in the metal expansion ring during operation, thereby improving the overall sealing performance.

[0025] Secondly, a bearing seat is provided, which is suitable for the installation of an aviation shaft and comprises the metal expansion ring sealing ring described above or some or all of the above, and specifically, see Figure 3 The bearing seat further comprises a rotating support 2, which is assembled on the shaft with an interference in a partial length, see Figure 4 The rotating support 2 is provided with mounting grooves 21 on the outer ring surface at intervals, and the width of the mounting grooves 21 is adapted to the thickness of the body 1, which is used for mounting the body 1. The shaft is installed in the bearing seat through the rotating support 2, which can improve the sealing performance of the shaft. It should be pointed out that the thickness of the first graphite layer 11 is greater than the thickness of the second graphite layer 12, which is to compensate for the wear of the side surface of the body 1 when the bearing seat is filled with lubricating oil and the rotating support 2 rotates with the shaft. The two side surfaces of the body 1 will rotate relative to the mounting grooves 21, which will cause wear to the side surface of the body 1. The first graphite layer 11 is needed to compensate for the wear, and the second graphite layer 12 does not need to compensate for the end surface cutout. Therefore, the thickness of the first graphite layer 11 is greater than the thickness of the second graphite layer 12, which can reduce the difficulty of processing. Preferably, the mounting angle of the cutout end surface of the body 1 in the adjacent mounting grooves 21 is 180°, that is, one cutout end surface of the body 1 is located on the left side of the shaft, and one cutout end surface of the body 1 is located on the right side of the shaft, which can improve the sealing effect.

[0026] As a specific embodiment of the present case, the number of mounting grooves 21 is at least two, and the axial length of the rotating support 2 is one-half to three-fourths of the axial length of the bearing seat.

[0027] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or replacements that can be easily thought of by those skilled in the art within the technical scope disclosed by the present disclosure should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A metal expander seal ring suitable for use in the sealing of an aeronautical bearing housing, characterized in that, The body including the expanding ring is made of a metal material, wherein, Both axial sides of the body are provided with a first graphite layer, and both cut end faces of the body are provided with a second graphite layer, the first graphite layer is used to prevent the body from being locally deformed in a high temperature environment, and the second graphite layer is used to prevent the cut end faces from being corroded by lubricating oil.

2. The metal expander seal ring of claim 1, wherein, The thickness of the first graphite layer is greater than the thickness of the second graphite layer.

3. The metal expander seal ring of claim 2, wherein, The thickness of the first graphite layer is 0.8-1.2 mm.

4. The metal expander seal ring of claim 2, wherein, The thickness of the second graphite layer is 0.1-0.2 mm.

5. A bearing block suitable for mounting of an aeronautical shaft, characterized in that, The metal expanding ring seal ring comprises the metal expanding ring seal ring as claimed in any one of claims 1 to 4.

6. The bearing seat of claim 5, wherein, Further comprising a rotating support which is assembled on a part of the length of the shaft in an interference fit, and a plurality of installation grooves are arranged on the outer ring surface of the rotating support at intervals, the width of the installation grooves is adapted to the thickness of the body, and the body is installed in the installation grooves, wherein, The shaft is installed in the bearing seat through the rotating support, and the sealing performance of the shaft can be improved.

7. The bearing seat of claim 6, wherein The number of the installation grooves is at least two.

8. The bearing seat of claim 6, wherein, The axial length of the rotating support is one half to three quarters of the axial length of the bearing seat.

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