Assembling device and method for graphite sealing ring of engine

Abstract

The invention provides an assembling device and method for an engine graphite sealing ring, the assembling device comprises a device body, the device body comprises a supporting structure and a positioning structure arranged on the supporting structure, and the supporting structure can support the graphite sealing ring to be assembled; the positioning structure can move along the supporting structure, and under the condition that force is applied to the positioning structure, the positioning structure can drive the graphite sealing ring to be assembled to be separated from the device body; the supporting structure is further provided with a guiding structure, and the graphite sealing ring to be assembled can be located at the corresponding installation position on the graphite sealing assembly by operating the guiding structure. The graphite sealing ring assembling tool can be precisely combined with a to-be-assembled graphite sealing ring, smooth assembling of the to-be-assembled graphite sealing ring is guaranteed, it can be rapidly and accurately guaranteed that the to-be-assembled graphite sealing ring is assembled in place, damage to the to-be-assembled graphite sealing ring is effectively avoided, space is saved, and accurate, rapid and reliable assembling of the graphite sealing ring is achieved; therefore, the assembly quality and production efficiency of the graphite sealing ring are improved, and the assembly requirement of the graphite sealing ring is met.

Description

Technical Field

[0001] The invention belongs to the technical field of aviation engine assembly and debugging, and in particular relates to an assembly device and method for an engine graphite sealing ring. Background Art

[0002] Graphite sealing rings are widely used as sealing materials in aircraft engines because of their excellent physical properties such as high temperature resistance, self-lubrication, low friction coefficient, wear resistance and low thermal expansion coefficient. Graphite sealing rings perform particularly well in extreme environments that need to withstand high temperature, high pressure and high-speed rotation. However, graphite sealing rings have high processing precision and are relatively soft in material, which makes them very susceptible to damage during the assembly of aircraft engines, making it difficult to meet the requirements for sealing effects.

[0003] At present, the graphite sealing ring assembly is usually composed of a sealing assembly, a graphite sealing ring, a spring sleeve and a tension spring, and the graphite sealing ring mostly adopts a fan-shaped segment structure to adapt to the complex assembly environment inside the engine. However, there are many technical difficulties in the assembly process of the graphite sealing ring of this structure. The traditional assembly method mainly adopts manual direct assembly, which is not only inefficient, but also difficult to ensure the assembly quality. Due to the soft material of the graphite sealing ring, it is very easy to cause the graphite sealing ring to be bumped and damaged by manual direct assembly due to improper assembly or careless operation. These minor damages may cause gas leakage in subsequent sealing tests, thereby affecting the normal use and performance of the engine. The existing graphite sealing ring assembly technology also lacks a special assembly equipment to achieve accurate, fast and reliable assembly of the graphite sealing ring. Therefore, in summary, in the current prior art, it is easy to cause the graphite sealing ring to be bumped and damaged due to unreasonable assembly methods during the assembly process of the graphite sealing ring, thereby causing gas leakage during the sealing test to affect the normal use of the engine, and the assembly efficiency cannot be improved while meeting the assembly quality. Summary of the invention

[0004] The present invention provides an assembly device and method for an engine graphite sealing ring, aiming to solve the problem that in the current assembly process of the graphite sealing ring, the graphite sealing ring may be easily damaged due to an unreasonable assembly method, thereby causing gas leakage during the sealing test to affect the normal use of the engine, and the assembly efficiency cannot be improved while meeting the assembly quality.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: The present invention discloses an assembly device for an engine graphite sealing ring, comprising a device body, which can assemble a graphite sealing ring to be assembled to a graphite sealing assembly; the graphite sealing ring to be assembled is an annular structure composed of multiple arc-shaped graphite rings, and the annular structure is provided with an elastic member so as to make the graphite sealing ring to be assembled elastic; wherein: The device body includes a supporting structure and a positioning structure configured thereon. When installed, the supporting structure can support the graphite sealing ring to be assembled; the positioning structure can move along the supporting structure, and when a force is applied to the positioning structure, the positioning structure can drive the graphite sealing ring to be assembled to be separated from the device body; The support structure is also provided with a guide structure, and in the case of installation, the guide structure can be operated to place the graphite sealing ring to be assembled at a corresponding installation position on the graphite sealing assembly.

[0006] In some embodiments, the supporting structure is a core rod, the core rod is a rod-shaped structure, and the graphite sealing ring to be assembled can be elastically assembled on the side wall of the core rod.

[0007] Furthermore, the radial dimension of the core rod is not less than the radial dimension of the graphite sealing ring to be assembled.

[0008] Furthermore, a first weight-reducing groove is formed at one end of the core rod inwardly along the axial direction of the core rod.

[0009] Furthermore, a guide structure is arranged at the other end of the core rod, and the guide structure includes a handle and a fastener configured thereon. In the installed state, the handle passes through the other end of the core rod into the first slot body so as to be connected with the fastener.

[0010] Furthermore, the fastener is a fastening nut, and the handle has threads corresponding to the fastening nut.

[0011] Furthermore, the core rod is provided with a plurality of second weight-reducing grooves around the connecting position of the guide structure, and the plurality of second weight-reducing grooves are connected with the first weight-reducing grooves.

[0012] In some embodiments, the positioning structure is a positioning ring, and a radial dimension of the positioning ring is greater than a radial dimension of the core rod.

[0013] Furthermore, the positioning ring is extended along the axial direction to form an annular protrusion, and in the installed state, the annular protrusion is opposite to the direction of the graphite sealing ring to be assembled.

[0014] The present invention also provides a method for assembling an engine graphite sealing ring, comprising the following steps: S1. Install the graphite sealing ring to be assembled on the supporting structure. The supporting structure serves as the inner support of the graphite ring and is tightened with a tension spring to ensure that the graphite sealing ring does not fall off. S2. Install the positioning structure to the supporting structure so that the positioning structure and the graphite sealing ring to be assembled fit together; install the guiding structure and use the guiding structure to align the graphite sealing ring to be assembled with the corresponding installation position on the graphite sealing assembly; S3. The positioning structure is pressed down by the operator, and then the guiding structure is lifted to drive the supporting structure to withdraw from the graphite sealing ring to be assembled, thereby completing the assembly of the graphite sealing ring to be assembled.

[0015] Compared with the prior art, the assembly device and method of an engine graphite sealing ring of the present invention has the following beneficial effects: The present invention discloses an assembly device for an engine graphite sealing ring, comprising a device body, wherein the device body can assemble a graphite sealing ring to be assembled to a graphite sealing assembly; the graphite sealing ring to be assembled is an annular structure composed of a plurality of arc-shaped graphite rings, and the annular structure is provided with an elastic member so as to make the graphite sealing ring to be assembled elastic; wherein: the device body comprises a supporting structure and a positioning structure arranged thereon, and in the case of installation, the supporting structure can support the graphite sealing ring to be assembled; the positioning structure can move along the supporting structure, and in the case of applying force to the positioning structure, the positioning structure can drive the graphite sealing ring to be assembled to be separated from the device body; the supporting structure is also provided with a guiding structure, and in the case of installation, the graphite sealing ring to be assembled can be placed in a corresponding mounting position on the graphite sealing assembly by operating the guiding structure. Based on the above, the present invention can arrange the assembly sequence more reasonably and ensure quick and effective assembly by designing an assembly device suitable for graphite sealing rings to be assembled. The present invention can be assisted by an assembly device, so that the graphite sealing ring to be assembled can be installed without direct manual contact with the graphite sealing ring to be assembled. After the graphite sealing ring to be assembled is relatively stably installed by the assembly device, it is installed as a whole to the corresponding installation position of the graphite sealing assembly, and then the assembly device is operated to exit, leaving the graphite sealing ring to be assembled in its corresponding installation position in the graphite sealing assembly, and then subsequent installation operations are performed. The assembly device of the present invention can be precisely combined with the graphite sealing ring to be assembled to ensure its smooth assembly. Through the design of the positioning structure, it can quickly and accurately ensure that the graphite sealing ring to be assembled is assembled in place, effectively avoiding its damage and saving space. The assembly device can realize accurate, fast and reliable assembly of the graphite sealing ring, thereby improving the assembly quality and production efficiency of the graphite sealing ring, and meeting the assembly requirements of the graphite sealing ring of the aircraft engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a structural schematic diagram of an assembly device in an assembly device and method for an engine graphite sealing ring of the present invention; Figure 2 It is a structural schematic diagram of installing a graphite sealing ring in an assembly device and method for an engine graphite sealing ring of the present invention; Figure 3 It is a structural schematic diagram of a graphite sealing ring in an assembly device and method for an engine graphite sealing ring of the present invention; Figure 4 The present invention is a schematic structural diagram of a graphite sealing assembly in an assembly device and method for an engine graphite sealing ring.

[0018] Among them, 1. core rod, 2. first weight-reducing groove, 3. handle, 4. fastening nut, 5. second weight-reducing groove, 6. positioning ring, 7. annular protrusion, 8. handle mounting hole, 9. graphite sealing ring, 10. spring hoop, 11. sealing assembly, 12. spring sleeve, 13. tension spring. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] How to provide an assembly device to assist in the assembly of graphite sealing rings, thereby improving the integrity of the graphite sealing rings during installation and improving the production quality and efficiency of graphite sealing ring assembly.

[0026] like Figure 1 and Figure 2 As shown, the present invention provides an assembly device for an engine graphite sealing ring, comprising a device body, which can assemble a graphite sealing ring to be assembled to a graphite sealing assembly; the graphite sealing ring to be assembled is an annular structure composed of multiple segments of arc-shaped graphite rings, and the annular structure is provided with an elastic member so as to make the graphite sealing ring to be assembled elastic; wherein: The device body includes a supporting structure and a positioning structure configured thereon. When installed, the supporting structure can support the graphite sealing ring to be assembled; the positioning structure can move along the supporting structure, and when a force is applied to the positioning structure, the positioning structure can drive the graphite sealing ring to be assembled to be separated from the device body; The support structure is also provided with a guide structure, and in the case of installation, the guide structure can be operated to place the graphite sealing ring to be assembled at a corresponding installation position on the graphite sealing assembly.

[0027] The assembly device of the present invention is composed of a supporting structure and a positioning structure. The supporting structure provides support for the graphite sealing ring 9 to be assembled; and the positioning structure can guide the graphite sealing ring 9 to separate from the device body when subjected to external force, and accurately install the predetermined position of the graphite sealing assembly 11. In addition, the supporting structure is also configured with a guiding structure, so that the operator can easily and accurately place the graphite sealing ring 9 in the installation position during the assembly process, avoiding damage that may be caused by direct contact with the graphite sealing ring 9, thereby improving the accuracy of assembly. The present invention can accurately assemble and position by integrating the support structure, the positioning structure and the guiding structure, ensuring the integrity of the graphite sealing ring 9 installed in the graphite sealing assembly 11, thereby improving the sealing performance. The guiding structure of the present invention makes the assembly process simpler and improves the user experience. The present invention effectively avoids the situation where the graphite sealing ring 9 may be damaged during the assembly process, and has applicability.

[0028] In some embodiments, in the assembly device of the engine graphite sealing ring of the present invention, the supporting structure is a core rod 1, the core rod 1 is a rod-shaped structure, and the graphite sealing ring 9 can be elastically assembled on the side wall of the core rod 1. In the present invention, the core rod 1 serves as an inner support of the graphite sealing ring 9, providing a stable support for the graphite sealing ring 9, and the shape of the rod-shaped structure makes the core rod 1 relatively easy to operate and maintain.

[0029] like Figure 3 As shown, further, in the present invention, the radial dimension of the core rod 1 is designed to be no less than the radial dimension of the graphite sealing ring 9, so as to ensure that the graphite sealing ring 9 can be tightly assembled on the core rod 1, prevent the graphite sealing ring 9 from slipping or shifting during the assembly process, and ensure the stability of the graphite sealing ring 9 on the core rod 1 and the accuracy of the entire assembly process.

[0030] Further preferably, in the present invention, a first weight-reducing groove 2 is provided at one end of the mandrel 1 inwardly along the axial direction of the mandrel 1. In order to reduce the weight of the mandrel 1 and facilitate operation, the present invention provides a first weight-reducing groove 2 inwardly along the axial direction of the mandrel 1 at one end of the mandrel 1, thereby reducing the overall weight of the mandrel 1 and making the assembly process easier. The first weight-reducing groove 2 increases the flexibility of the mandrel 1 and facilitates operation and movement.

[0031] In some embodiments, in the assembly device of the engine graphite sealing ring of the present invention, the guide structure is arranged at the other end of the core rod 1, and the guide structure includes a handle 3 and a fastener arranged thereon. In the installed state, the handle 3 passes through the other end of the core rod 1 into the first groove body 2 so as to be connected with the fastener. The cooperation between the handle 3 and the fastener of the present invention makes the assembly process more convenient and controllable, and the fastener can firmly fix the handle 3 to prevent it from falling off during the assembly process.

[0032] Furthermore, in the assembly device of the engine graphite sealing ring of the present invention, the fastener can specifically be a fastening nut 4, and the handle 3 has a thread matching the fastening nut 4. In actual working conditions, the fastening nut 4 can be selected but not limited to a hexagonal nut. The core rod 1 corresponds to the guide structure, and a handle mounting hole 8 is axially opened at one end thereof. The guide structure of the present invention is detachably mounted on the core rod 1, and combined with the threaded connection, the connection of the handle is more secure, and it is easy to disassemble and assemble, thereby improving the flexibility of assembly.

[0033] In some embodiments, in the assembly device of the engine graphite sealing ring of the present invention, the core rod 1 is provided with a plurality of second weight-reducing grooves 5 around the connecting position of the guide structure, and the plurality of second weight-reducing grooves 5 are connected with the first weight-reducing grooves 2. In order to further reduce the weight of the core rod 1, the present invention further reduces the overall weight of the core rod and improves the assembly efficiency by providing a plurality of second weight-reducing grooves 5 connected with the first weight-reducing grooves 2. The design of the first weight-reducing grooves 2 and the second weight-reducing grooves 5 also enhances the strength and rigidity of the core rod, making it more stable during the assembly process.

[0034] In some embodiments, in the assembly device of the engine graphite sealing ring of the present invention, the positioning structure is a positioning ring 6, and the radial dimension of the positioning ring 6 is greater than the radial dimension of the core rod 1. Furthermore, the positioning ring 6 is extended in the axial direction to form an annular protrusion 7, and in the installed state, the annular protrusion 7 is opposite to the direction of the graphite sealing ring 9. The positioning ring can relatively movably clamp the main graphite sealing ring 9 to prevent it from slipping or shifting during the assembly process, and the size is set so that it can cover the graphite sealing ring 9. In actual working conditions, the structure of the annular protrusion 7 can be relatively adapted to the contact surface of the graphite sealing ring 9, and chamfers are processed to avoid mutual damage after contact. The annular protrusion 7 can further increase the contact area between the positioning ring 6 and the graphite sealing ring 9, and the relative position of the annular protrusion 7 and the graphite sealing ring 9 ensures that the graphite sealing ring 9 can be accurately positioned at a predetermined position, avoiding assembly errors caused by position deviations. The annular protrusion 7 enhances the supporting effect of the positioning ring 6 on the graphite sealing ring 9, and prevents the graphite sealing ring 9 from being deformed or damaged due to uneven force during the assembly process.

[0035] In some specific embodiments, in the assembly device of the engine graphite sealing ring of the present invention, the handle 3 is fixed to the core rod 1 through a hexagonal nut, which is convenient for disassembly. The present invention realizes the guided assembly of the graphite sealing ring 9 through the core rod 1.

[0036] As a control for processing, the core rod 1 of the present invention is designed with a chamfer on the assembly joint surface to facilitate assembly guidance. And the present invention realizes the correct assembly position of the graphite sealing ring 9 through the positioning ring 6. Among them, the positioning ring 6 is also designed with a chamfer on the assembly joint surface to facilitate assembly guidance. The assembly device of the present invention is easy and fast to operate, has reliable positioning, improves the assembly efficiency of the graphite sealing ring, realizes rapid assembly in place, and can be widely used in the assembly conditions of the graphite sealing ring.

[0037] like Figure 4 As shown, as an example of the structural state after installation, it is a schematic diagram of the assembly device of the present invention after the graphite sealing ring 9 is installed in the graphite sealing assembly 11. The current graphite sealing ring assembly 11 is composed of a sealing assembly 11, a graphite sealing ring 9, a spring sleeve 12 and a tension spring 13.

[0038] The present invention also provides a method for assembling an engine graphite sealing ring, which comprises the following steps during implementation: First, the graphite sealing ring 9 and the spring hoop 10 are assembled onto the core rod 1 . The core rod 1 is used as the inner support of the graphite sealing ring 9 and is tightened with the spring hoop 10 to ensure that the graphite sealing ring 9 does not fall off the core rod 1 .

[0039] Then, the core rod 1 and the positioning ring 6 cooperate, and use the handle 3 to align the pin hole on the assembled graphite sealing ring 9 with the positioning pin on the graphite sealing component 11. After ensuring that the graphite sealing ring 9 is assembled to the correct position, the assembled graphite sealing ring 9 and the spring hoop 10 are slowly pushed into the graphite sealing component 11.

[0040] Finally, gently press the positioning ring 2 in the installed sealing seat assembly 11, and then slowly pull out the core rod 1. The chamfers of the positioning ring 6 and the core rod 1 can guide the correct assembly position and prevent the graphite sealing ring 9 from being crushed during the installation process. Finally, the assembly of the graphite sealing ring 9 is completed after the entire assembly device is withdrawn from the sealing seat assembly 11.

[0041] In summary, the present invention provides an assembly device and method for an engine graphite sealing ring. The assembly device realizes the precise assembly of the graphite sealing ring through the cooperation of a supporting structure, a positioning structure and a guiding structure. The core rod provides stable support for the graphite sealing ring, and at the same time, a plurality of weight-reducing grooves are provided to reduce weight and improve flexibility. The positioning ring ensures that the graphite sealing ring will not slip or shift during the assembly process, and increases the contact area through shape-matched protrusions to improve assembly accuracy. The guiding structure makes the assembly process simpler, improves assembly efficiency and user experience. The assembly device is convenient and reliable to operate, effectively avoids possible damage to the graphite sealing ring during the assembly process, ensures the intact installation of the graphite sealing ring in the graphite sealing assembly, thereby improving the sealing performance, and can be applied to the assembly conditions of the graphite sealing ring, and has better practical significance.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. An assembly device for an engine graphite sealing ring, characterized in that: The device comprises a device body, wherein the device body can assemble a graphite sealing ring to be assembled to a graphite sealing assembly; the graphite sealing ring to be assembled is an annular structure composed of multiple arc-shaped graphite rings, and the annular structure is provided with an elastic member so as to make the graphite sealing ring to be assembled elastic; wherein: The device body includes a supporting structure and a positioning structure configured thereon. When installed, the supporting structure can support the graphite sealing ring to be assembled; the positioning structure can move along the supporting structure. When a force is applied to the positioning structure, the positioning structure can drive the graphite sealing ring to be assembled to be separated from the device body; The support structure is also provided with a guide structure, and in the case of installation, the guide structure can be operated to place the graphite sealing ring to be assembled in a corresponding installation position on the graphite sealing assembly.

2. The assembly device for engine graphite sealing ring according to claim 1, characterized in that: The supporting structure is a core rod (1), the core rod (1) is a rod-shaped structure, and the graphite sealing ring to be assembled can be elastically assembled on the side wall of the core rod (1).

3. The assembly device for engine graphite sealing ring according to claim 2, characterized in that: The radial dimension of the core rod (1) is not less than the radial dimension of the graphite sealing ring to be assembled.

4. The assembly device for engine graphite sealing ring according to claim 2, characterized in that: One end of the core rod (1) is provided with a first weight-reducing groove (2) inwardly along the axial direction of the core rod (1).

5. The assembly device for engine graphite sealing ring according to claim 4, characterized in that: The guide structure is arranged at the other end of the mandrel (1), and comprises a handle (3) and a fastener arranged thereon. In the installed state, the handle (3) passes through the other end of the mandrel (1) into the first slot body (2) so as to be connected to the fastener.

6. The assembly device for engine graphite sealing ring according to claim 5, characterized in that: The fastener is a fastening nut (4), and the handle (3) has threads corresponding to the fastening nut (4).

7. The assembly device for engine graphite sealing ring according to claim 5, characterized in that: The core rod (1) is provided with a plurality of second weight-reducing grooves (5) around the guide structure connection position, and the plurality of second weight-reducing grooves (5) are connected to the first weight-reducing grooves (2).

8. The assembly device for engine graphite sealing ring according to claim 1, characterized in that: The positioning structure is a positioning ring (6), and the radial dimension of the positioning ring (6) is greater than the radial dimension of the core rod (1).

9. The assembly device for engine graphite sealing ring according to claim 8, characterized in that: The positioning ring (6) is extended in the axial direction thereof to form an annular protrusion (7); in the installed state, the annular protrusion (7) is opposite to the direction of the graphite sealing ring to be assembled.

10. An assembly method for an assembly device for an engine graphite sealing ring according to any one of claims 1 to 9, characterized in that: The steps include: S1. Install the graphite sealing ring to be assembled on the supporting structure. The supporting structure serves as the inner support of the graphite ring and is tightened with a tension spring to ensure that the graphite sealing ring does not fall off. S2. Install the positioning structure to the supporting structure so that the positioning structure and the graphite sealing ring to be assembled fit together; Install the guide structure, and use the guide structure to align the graphite sealing ring to be assembled with the corresponding installation position on the graphite sealing assembly; S3. The positioning structure is pressed down by the operator, and then the guiding structure is lifted to drive the supporting structure to withdraw from the graphite sealing ring to be assembled, thereby completing the assembly of the graphite sealing ring to be assembled.

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