Method for measuring axial gap between centrifugal impeller and impeller casing
A technology of centrifugal impeller and axial clearance, which is applied in the direction of mechanical clearance measurement, etc., to achieve the effect of solving large measurement errors
Active Publication Date: 2019-02-19
CHINA HANGFA SOUTH IND CO LTD
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[0004] The invention provides a method for measuring the axial gap between the centrifugal impeller and the impeller housing to solve the problem of how to measure the axial gap between the centrifugal impeller and the impeller housing under the condition of ensuring the centering of the rotor
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[0025] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0026] figure 1 It is a schematic flow chart of the measuring method for the axial gap between the centrifugal impeller and the impeller housing in the preferred embodiment of the present invention; figure 2 It is a schematic diagram of the rotor in the preferred embodiment of the present invention in a vertical state to measure the axial gap; image 3 It is a schematic diagram of the axial gap between the centrifugal impeller and the impeller housing in the preferred embodiment of the present invention.
[0027] Such as figure 1 As shown, the method for measuring the axial gap between the centrifugal impeller and the impeller housing of this embodiment includes the following steps: a. Asse...
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The invention provides a method for measuring an axial gap between a centrifugal impeller and an impeller casing, comprising the following steps of: a. assembling the rotor to an air intake casing anda rear support casing to center the rotor and form an axial gap between the centrifugal impeller and the impeller casing; b. measuring the distance between the rotor and the rear support machine to obtain H1; c. releasing the assembly relationship between the rotor and the air intake casing, axially moving the rotor to eliminate the axial gap between the centrifugal impeller and the impeller casing; d. measuring the distance between the rotor and the rear support casing to obtain H2; e. subtracting H2 from H1 to obtain the axial gap value between the centrifugal impeller and the impeller casing. The method for measuring axial gap between centrifugal impeller and impeller casing can accurately measure the axial gap value between the centrifugal impeller and the impeller casing when the rotor is completely centered. This solves the problem of large measurement error caused by the rotor's uncenteredness, and solves the problem that cannot be measured due to the influence of the rear support mechanism.
Description
technical field [0001] The invention relates to the technical field of aero-engine assembly, in particular to a method for measuring the axial gap between a centrifugal impeller and an impeller housing. Background technique [0002] The rotor of an aero-engine mainly includes components such as a centrifugal impeller, a center tie rod, and a gas turbine, and the stator of an aero-engine mainly includes components such as an air intake casing, a rear support casing, and an impeller cover. The axial clearance between the centrifugal impeller and the impeller housing needs to be measured during the general assembly of the aero-engine. The axial clearance here is a key dimension in the assembly process of the aero-engine. If the axial clearance is greater than the required value, the performance of the aero-engine will be unqualified; if the axial clearance is less than the required value, the distance between the rotor and the stator will be smaller than the safe The distance ...
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Login to View More IPC IPC(8): G01B5/14
CPCG01B5/14
Inventor 李梦琦李梦娇徐海洋袁野熊炳文王龙
Owner CHINA HANGFA SOUTH IND CO LTD