Fingertip sealing device capable of adapting to bidirectional rotation of rotor
A technology of fingertip sealing and two-way rotation, which is applied to prevent leakage, engine components, machines/engines, etc. It can solve the problems that fingertip thin slices are prone to abnormal warping, fingertip seals cannot withstand the rotor, and cannot withstand rotor reversal. , to achieve simple forming and assembly processes, reduce material costs, and increase flexibility
Active Publication Date: 2021-07-09
AECC HUNAN AVIATION POWERPLANT RES INST
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Problems solved by technology
[0006] The inclination direction of the fingertip beam profile line of the fingertip sheet of the existing fingertip seal can only be along the direction of rotor rotation, if the inclination direction of the profile line is opposite to the rotor rotation direction , fingertip flakes are prone to abnormal warping, affecting sealing performance and causing abnormal wear
Therefore, fingertip seals cannot withstand rotor reversal conditions
[0007] From the above, it can be seen that the existing sealing device has disadvantages such as large leakage, complicated manufacturing process and inability to withstand rotor reversal
Method used
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[0028] Next, the technical solutions in the embodiments of the present invention will be apparent from the embodiment of the present invention, and it is clearly described, and it is understood that the described embodiments are merely embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.
[0029] See Figure 3-6 In the embodiment of the present invention, a fingertip sealing device capable of adapting the bidirection of the rotor, including mount 3 and sealing track 7, and the mounting seat 3 and the sealing track 7 are provided with a finger tip sealing device body, said The finger sealing device body is integrated by the front baffle 1, the fingertip sheet set, and the rear baffle 6, including two left-handed finger tip 4 and two right-hand finger tip 5 The left-handed finger tip 4 and the right rotating fin...
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The invention discloses a fingertip sealing device capable of adapting to bidirectional rotation of a rotor. The fingertip sealing device comprises a mounting seat and a sealing runway, a fingertip sealing device body is arranged between the mounting seat and the sealing runway, and the fingertip sealing device body is formed by integrally welding a front baffle, a fingertip sheet group and a rear baffle. The fingertip sheet group comprises two left-handed fingertip sheets and two right-handed fingertip sheets, the left-handed fingertip sheets and the right-handed fingertip sheets of the fingertip sheet group are mutually staggered, folded and assembled, and the assembling sequence is one left-handed fingertip sheet, one right-handed fingertip sheet, the other left-handed fingertip sheet and the other right-handed fingertip sheet. The front baffle is located on the high-pressure side of the fingertip sealing device body, the rear baffle is located on the low-pressure side of the fingertip sealing device body, and the two left-handed fingertip sheets and the two right-handed fingertip sheets make contact with the sealing runway to form a sealing interface, so as to solve the technical problems that an existing sealing device is large in leakage amount, complex in manufacturing process and incapable of bearing the reverse rotation working condition of the rotor.
Description
Technical field [0001] The present invention belongs to the technical field of aviation engine, in particular a fingertip sealing device that adapts to the rotor bidirectional rotation. Background technique [0002] As the air engine thermal cycle parameters are constantly increasing, the working conditions of the sealing device are increasing, and the gas flow path sealing effect has an important impact on the performance of the engine. The function of the aerospace air system is mainly adjusted by a sealing device in the system. The currently used gas flow path sealing device has a gobi seal, a brush seal and a fingertip seal. [0003] Such as figure 1 As shown, the 密 seal is a non-contact sealing structure, there is a gap between the turns, the amount of leakage, and during the acceleration of the engine in the slow car state, due to the rotor inflation, stratum and rotor gap Small, shaft vibration and offset, so that the jet tip and coating are worn, resulting in an increased...
Claims
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IPC IPC(8): F01D11/08
CPCF01D11/08
Inventor 周坤力宁邹晗阳潘君王晓燕胡廷勋李齐飞
Owner AECC HUNAN AVIATION POWERPLANT RES INST