Valve rotating mechanism and aero-engine comprising same

Abstract

The application discloses a valve rotating mechanism and an aero-engine comprising the same, wherein the valve rotating mechanism comprises a valve, a positioning assembly, and a sealing assembly used for sealing a first gap between the valve and the positioning assembly, the sealing assembly comprising a rubber piece, a protection piece and a supporting piece, the protection piece wrapping an outer surface of the rubber piece, a connecting end of the rubber piece connected with the positioning assembly, and the supporting piece connected with the connecting end and used for preventing the connecting end from falling off from the positioning assembly. The outer surface of the rubber piece is wrapped with the protection piece, so that damage of the rubber piece caused by abrasion between the rubber piece and the positioning assembly can be prevented. In addition, the rubber piece is relatively soft, and the connecting end of the rubber piece and the supporting piece connected with the positioning assembly is connected, so that the connecting end is not easy to fall off from the positioning assembly during work, and a major accident can be avoided. By adopting the above structure, the service life of the rubber piece and the working safety are improved under the condition of ensuring normal sealing.

Description

Technical Field

[0001] This invention relates to a valve rotating mechanism and an aircraft engine containing the same. Background Technology

[0002] Aero engines often contain rotating mechanisms. The airflow pressurized by the booster stage flows into the high-pressure compressor. The leakage rate and velocity of this airflow often affect the performance of the booster stage, and leakage is frequently influenced by a combination of factors and structural elements. Maintaining a tight seal around the adjustable vent valve is crucial when it is closed, and the valve seals are typically made of rubber. These rubber components are attached to the positioning assembly, and when deformed by compression, they can easily detach from the assembly. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defect that the connecting end of the rubber part is easy to fall off from the positioning assembly in the prior art, and to provide a valve rotating mechanism and an aero engine including the same.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This invention discloses a valve rotation mechanism, comprising: a valve; a positioning component; and a sealing component. The sealing component is used to seal a first gap between the valve and the positioning component. The sealing component includes a rubber component, a protective component, and a support component. The protective component covers the outer surface of the rubber component and is used to protect the connection end of the rubber component connected to the positioning component. The support component is connected to the connection end and is used to prevent the connection end from falling off the positioning component.

[0006] In this design, the sealing around the adjustable vent valve is crucial when it is closed. The initial gap between the valve and the positioning assembly is sealed with a rubber component, and the outer surface of the rubber component is covered with a protective layer to prevent damage to the rubber component due to wear between it and the positioning assembly. Furthermore, given the flexibility of the rubber component, the connection between the support component and the joint connecting the rubber component to the positioning assembly ensures that the joint will not easily detach from the positioning assembly during operation, thus preventing a serious accident. This structural design improves the service life of the rubber component and operational safety while maintaining proper sealing.

[0007] Preferably, the rubber component includes a snap-fit ​​portion that snaps into the positioning component, and the protective component is connected to the snap-fit ​​portion.

[0008] In this solution, the above-described structural form is adopted, and the connection end between the rubber part and the positioning component is a snap-fit ​​portion. A protective component is connected to the snap-fit ​​portion, and this protective component wraps around the outer surface of the snap-fit ​​portion along its extension direction, which can prevent wear on the snap-fit ​​portion and improve its service life.

[0009] Preferably, the protective component includes multiple protective parts that are separately arranged, with a second gap between two adjacent protective parts, and the multiple protective parts form a protective cavity, with the snap-fit ​​portion extending into the protective cavity.

[0010] In this solution, the above-mentioned structural form is adopted. By using multiple protective parts that are separately arranged and a second gap between two adjacent protective parts, it is ensured that the protective parts can be properly wrapped around the outer surface of the snap-fit ​​part, and the installation efficiency can be improved.

[0011] Preferably, the positioning component has a limiting hole with an opening, and the snap-fit ​​portion extends into the limiting hole from the opening and snaps into the opening.

[0012] In this design, when the valve opens, the locking part undergoes elastic deformation under the valve's action. The limiting hole provides the space required for this deformation, while also ensuring that the locking part does not experience excessive displacement under the valve's action, thus preventing it from failing to properly seal the first gap. This structural design ensures that the sealing reliability is not affected by excessive displacement of the locking part when the valve opens, and the opening of the limiting hole enables the locking part to engage with the positioning component.

[0013] Preferably, the support member extends through the snap-fit ​​portion along the extending direction of the snap-fit ​​portion;

[0014] And / or, the material of the support member is metal.

[0015] In this solution, the above-mentioned structural form is adopted to ensure that the snap-fit ​​part will not come off the limiting hole even if it is deformed by compression.

[0016] Preferably, the rubber component further includes a sealing portion located between the valve and the positioning assembly, one side of the sealing portion being in contact with the valve surface and the other side of the sealing portion being engaged with the positioning assembly.

[0017] In this design, the sealing element is located between the valve and the positioning assembly. One end of the sealing element is located in the outer duct flow channel, and the other end is located in the inner duct flow channel. The pressure difference between the outer and inner duct flow channels acts on the end of the sealing element located in the outer duct flow channel. One side of the sealing element contacts the valve surface, causing the valve to apply a first force to the sealing element. The other side of the sealing element engages with the positioning assembly, causing the positioning assembly to apply a second force to the sealing element. Using this structural configuration, the combined force of the first and second forces offsets the pressure difference between the inner and outer duct flow channels acting on the sealing element, ensuring that the sealing assembly will not be lifted due to the pressure difference and improving the reliability of the seal. The valve maintains surface contact with the sealing element whether opening or closing, ensuring that the first and second forces are always present. This means that the sealing element maintains a sealing effect regardless of the valve's state.

[0018] Preferably, on the side of the sealing portion away from the valve and in the positioning assembly, one has a raised stop and the other has a recessed stop that mates with the raised stop.

[0019] In this solution, the above-mentioned structural form is adopted, and the sealing part and the positioning component are snapped together by the cooperation of the convex stop and the concave stop.

[0020] Preferably, the rubber component further includes a connecting portion, wherein the snap-fit ​​portion, the connecting portion, and the sealing portion are connected in sequence, and the connecting portion is a curved portion with a rounded transition.

[0021] In this design, the valve and the sealing part are in surface contact. When the valve opens, it rubs against and pushes the sealing part. The connecting part is connected to the sealing part, and the connecting part is a curved bend, which allows the connecting part to generate elastic force and store energy when deformed; when the valve closes, it ensures that the rubber parts can return to their normal shape. This structural design prevents the rubber parts from breaking and extends their service life.

[0022] Preferably, the snap-fit ​​portion, the connecting portion, and the sealing portion are integrally formed.

[0023] In this solution, the above-mentioned structural form can simplify the production process, and the one-piece molding eliminates the connection process, thereby improving the strength of the rubber parts.

[0024] Preferably, the positioning component includes a first positioning part and a second positioning part, the first positioning part and the second positioning part being fixedly connected to form the limiting hole.

[0025] In this solution, the above-mentioned structural form is adopted, and the first positioning part and the second positioning part are fixedly connected to form a limiting hole, which can avoid the difficulty of processing the limiting hole on the positioning component during the overall molding.

[0026] The present invention also discloses an aircraft engine, including a valve rotation mechanism.

[0027] In this solution, the above-mentioned structural form is adopted to apply the valve rotation mechanism to the aero-engine, thereby improving the service life of the sealing components of the valve rotation mechanism in the aero-engine and ensuring the safety of the valve rotation mechanism operation.

[0028] The positive and progressive effects of this invention are as follows:

[0029] The initial gap between the valve and the positioning assembly is sealed by a rubber component, and the outer surface of the rubber component is covered with a protective element to prevent damage to the rubber component due to wear between it and the positioning assembly. Furthermore, because the rubber component is relatively flexible, the connection between the support component and the joint connecting the rubber component to the positioning assembly ensures that the joint will not easily detach from the positioning assembly during operation, thus preventing a major accident. This structural design improves the service life of the rubber component and operational safety while ensuring proper sealing. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a valve rotation mechanism provided in an embodiment of the present invention;

[0031] Figure 2 This is a partial schematic diagram of a valve rotation mechanism provided in an embodiment of the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] valve 1

[0034] Positioning component 2

[0035] Limiting hole 21

[0036] Opening 22

[0037] First Positioning Section 23

[0038] Second positioning unit 24

[0039] Sealing component 3

[0040] Rubber part 31

[0041] 311 Connector

[0042] Limiting part 3111

[0043] 3112 Connector

[0044] Sealing part 312

[0045] Connection part 313

[0046] Protective component 32

[0047] Protection Department 321

[0048] Second gap 322

[0049] Support component 33 Detailed Implementation

[0050] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the following embodiments.

[0051] This embodiment provides a valve rotation mechanism to solve the problem that the connecting end of the rubber part 31 is easy to fall off from the positioning component 2.

[0052] like Figures 1 to 2 As shown, the valve rotation mechanism includes a valve 1, a positioning assembly 2, and a sealing assembly 3. The sealing assembly 3 seals the first gap between the valve 1 and the positioning assembly 2. The sealing assembly 3 includes a rubber component 31, a protective component 32, and a support component 33. The protective component 32 covers the outer surface of the rubber component 31, preventing damage to the rubber component 31 due to wear between it and the positioning assembly 2, thus protecting the connection end between the rubber component 31 and the positioning assembly 2. Furthermore, since the rubber component 31 is relatively soft, connecting the support component 33 to the connection end between the rubber component 31 and the positioning assembly 2 ensures that the connection end is unlikely to detach from the positioning assembly 2 during operation, preventing a major accident. This structural form improves the service life of the rubber component 31 and operational safety while ensuring proper sealing. This embodiment is an illustrative representation, using the above structural form to prevent the rubber component 31 from detaching from the positioning assembly 2. In other alternative embodiments, any suitable method can be used.

[0053] The rubber component 31 includes a snap-fit ​​portion 311, which snaps into the positioning component 2. That is, the connection end between the rubber component 31 and the positioning component 2 is the snap-fit ​​portion 311. By connecting the protective component 32 to the snap-fit ​​portion 311, wear on the snap-fit ​​portion 311 can be prevented, thus improving its service life. Preferably, the protective component 32 wraps around the outer surface of the snap-fit ​​portion 311 along its extension direction, improving the reliability of the protection for the sealing component 3.

[0054] Please see Figure 2 To understand, the protective component 32 includes multiple separately arranged protective parts 321, with a second gap 322 between adjacent protective parts 321. This structural design ensures that the protective component 32 can properly cover the outer surface of the snap-fit ​​portion 311, improving installation efficiency. The multiple protective parts 321 constitute a protective cavity, and the snap-fit ​​portion 311 extends into the protective cavity.

[0055] In practical use, there are two protective parts 321, and both protective parts 321 are connected to the outer surface of the snap-fit ​​part 311.

[0056] The positioning component 2 has a limiting hole 21 with an opening 22. The engaging portion 311 extends into the limiting hole 21 from the opening 22 and engages with the opening 22. When the valve 1 is opened, the engaging portion 311 undergoes elastic deformation under the action of the valve 1, and the limiting hole 21 provides the space required for the deformation of the engaging portion 311. At the same time, the limiting hole 21 also ensures that the engaging portion 311 will not be unable to properly seal the first gap due to excessive displacement under the action of the valve 1. With the above structure, it is ensured that the reliability of the seal will not be affected by excessive displacement of the engaging portion 311 when the valve 1 is opened, and the engaging portion 311 and the positioning component 2 are achieved through the opening 22 of the limiting hole 21.

[0057] In practical use, the end face of the limiting hole 21 can be circular, and the locking portion 311 includes a limiting portion 3111 and a locking portion 3112. The limiting portion 3111 is located inside the limiting hole 21, and the diameter of the end face of the limiting portion 3111 is larger than the opening 22. This structure prevents the limiting portion 3111 from protruding from the opening 22. The locking portion 3112 has a certain extension length; one end of the locking portion 3112 is connected to the limiting portion 3111, and the other end of the locking portion 3112 extends out of the limiting hole 21 from the opening 22, and the locking portion 3112 contacts the surface of the opening 22. The locking portion 311 is locked to the positioning component 2 by the end face diameter of the limiting portion 3111 being larger than the opening 22. In other embodiments, other locking forms can also be used, and in other embodiments, the shapes of the limiting hole 21 and the locking portion 311 can also be other forms.

[0058] The support member 33 extends through the locking portion 311 along its extending direction, meaning the support member 33 extends through the limiting portion 3111 along its extending direction. This structure ensures that even with some compression deformation, the locking portion 311 will not detach from the limiting hole 21. The support member 33 is made of metal and can be a metal wire of a certain diameter. This structure further prevents the locking portion 311 from detaching from the limiting hole 21 at the opening 22. In other embodiments, the support member 33 can be made of other materials, which are not limited here.

[0059] The rubber component 31 also includes a sealing portion 312, which is located between the valve 1 and the positioning assembly 2. One end of the sealing portion 312 is located in the outer duct flow channel, and the other end is located in the inner duct flow channel. The pressure difference between the outer duct flow channel and the inner duct flow channel acts on the end of the sealing portion 312 located in the outer duct flow channel. One side of the sealing portion 312 is in surface contact with the valve 1, so that the valve 1 applies a first force to the sealing portion 312. The other side of the sealing portion 312 is engaged with the positioning assembly 2, so that the positioning assembly 2 applies a second force to the sealing portion 312. With the above structure, the combined force of the first and second forces cancels out the pressure difference between the inner and outer ducts acting on the sealing portion 312, ensuring that the sealing assembly 3 will not be lifted due to the pressure difference between the inner and outer ducts, thus improving the reliability of the seal. The valve 1 maintains surface contact with the sealing portion 312 whether it is open or closed, so that the first and second forces are always present. This means that the sealing portion 312 can maintain a sealing effect regardless of the state of the valve 1.

[0060] In practical use, the sealing portion 312 has a large end face and a small end face. The large end face is located in the outer duct flow channel, and the small end face is located in the inner duct flow channel. The diameter of the small end face can be the same as or slightly larger than the first gap. When a pressure difference occurs between the inner and outer ducts, the force applied to the sealing portion 312 is from the large end face to the small end face, causing the large end face to move towards the first gap. Because the diameter of the large end face is larger than the diameter of the small end face, the diameter of the sealing portion 312 passing through the first gap becomes increasingly larger than the first gap, until finally the sealing portion 312 can no longer pass through the first gap. Using this structural form, physical sealing can be achieved, and the reliability of the seal can be further improved.

[0061] On the side of the sealing portion 312 away from the valve 1 and in the positioning assembly 2, one has a convex stop and the other has a concave stop that mates with the convex stop. Using this structure, the convex and concave stops engage to achieve the snap-fit ​​between the sealing portion 312 and the positioning assembly 2.

[0062] The rubber component 31 also includes a connecting portion 313, and the snap-fit ​​portion 311, the connecting portion 313, and the sealing portion 312 are connected sequentially. The valve 1 is in surface contact with the sealing portion 312, and when the valve 1 is open, it rubs against and pushes the sealing portion 312. The connecting portion 313 is connected to the sealing portion 312, and the connecting portion 313 is a curved section, allowing it to generate elastic force and store energy when deformed; when the valve 1 is closed, it ensures that the rubber component 31 can return to its normal shape. This structural form prevents the rubber component 31 from breaking, increases its service life, and ensures that the rubber component 31 does not break under cyclic operation. This embodiment is an illustrative representation, using the above structural form to store energy and ensure that the rubber component 31 can return to its normal shape when the valve 1 is closed. In other alternative embodiments, any suitable method can be used.

[0063] Preferably, the snap-fit ​​portion 311, the connecting portion 313, and the sealing portion 312 are integrally molded. This structural form simplifies the manufacturing process, and the integral molding eliminates the need for a connection process, thus improving the strength of the rubber part 31. The connecting portion 313 is a curved section with a rounded transition, making the installation of the sealing assembly 3 simpler and the process more optimized. In other alternative embodiments, the snap-fit ​​portion 311, the connecting portion 313, and the sealing portion 312 can also be sequentially fixedly connected.

[0064] Please see Figure 2 To understand this, the positioning component 2 includes a first positioning part 23 and a second positioning part 24, and the first positioning part 23 and the second positioning part 24 are fixedly connected to form a limiting hole 21. By adopting the above structural form, the difficulty in processing the limiting hole 21 on the positioning component 2 during integral molding can be avoided, and the processing tolerance of the positioning component 2 is higher, saving processing costs.

[0065] In practical use, firstly, limiting holes 21 are machined on the first positioning part 23 and the second positioning part 24 respectively; then, the first positioning part 23 and the second positioning part 24 are fixedly formed by welding. In other embodiments, the first positioning part 23 and the second positioning part 24 may also be in other forms of fixed connection.

[0066] This embodiment also provides an aero-engine, including a valve rotating mechanism. By employing the above-described structure and applying the valve rotating mechanism to an aero-engine, the service life of the valve rotating mechanism sealing assembly 3 in the aero-engine is improved, ensuring the safe operation of the valve rotating mechanism.

[0067] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A valve rotation mechanism, characterized in that, include: valve; Positioning components; A sealing assembly is used to seal a first gap between the valve and the positioning assembly. The sealing assembly includes a rubber component, a protective component, and a support component. The rubber component includes a snap-fit ​​portion that snaps into the positioning assembly. The protective component is connected to the snap-fit ​​portion. The protective component covers the outer surface of the rubber component to protect the connection end between the rubber component and the positioning assembly. The protective component includes multiple separately arranged protective parts with a second gap between adjacent protective parts. The multiple protective parts form a protective cavity, and the snap-fit ​​portion extends into the protective cavity. The support member is connected to the connecting end to prevent the connecting end from falling off the positioning component; The positioning component has a limiting hole with an opening, and the snap-fit ​​part extends into the limiting hole from the opening and snaps into the opening. When the valve is opened, the locking part undergoes elastic deformation under the action of the valve, and the limiting hole provides the space required for the deformation of the locking part. At the same time, the limiting hole also ensures that the locking part will not fail to seal the first gap properly due to large displacement under the action of the valve.

2. The valve rotation mechanism as described in claim 1, characterized in that, The support member extends through the snap-fit ​​portion along the extending direction of the snap-fit ​​portion; And / or, the material of the support member is metal.

3. The valve rotation mechanism as described in claim 1, characterized in that, The rubber component also includes a sealing portion located between the valve and the positioning assembly. One side of the sealing portion is in contact with the valve surface, and the other side of the sealing portion is engaged with the positioning assembly.

4. The valve rotating mechanism as described in claim 3, characterized in that, On the side of the sealing portion away from the valve and in the positioning assembly, one has a raised stop and the other has a recessed stop that mates with the raised stop.

5. The valve rotating mechanism as described in claim 3, characterized in that, The rubber component also includes a connecting portion, wherein the snap-fit ​​portion, the connecting portion, and the sealing portion are connected in sequence, and the connecting portion is a curved section with a rounded transition.

6. The valve rotating mechanism as described in claim 5, characterized in that, The snap-fit ​​portion, the connecting portion, and the sealing portion are integrally formed.

7. The valve rotating mechanism as described in claim 1, characterized in that, The positioning component includes a first positioning part and a second positioning part, which are fixedly connected to form the limiting hole.

8. An aircraft engine comprising a valve rotating mechanism as described in any one of claims 1 to 7.

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