Compressor- turbine rotor subassembly dynamic balancing jig
A compressor and rotor technology, applied in the field of dynamic balance test fixtures, can solve problems affecting the reliability of the compressor-turbine rotor assembly, difficult to guarantee the concentricity of the inner hole of the long-body dummy shaft fixture, and manufacturability challenges. , to achieve the effect of high self-balance, convenient processing and production, and strong versatility
Inactive Publication Date: 2009-09-02
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
[0002] The dynamic balance inspection of the compressor-turbine rotor assembly is a key process in production. The existing technology is to use a long-body dummy shaft fixture, which is set at the fulcrum of the front journal of the compressor and at the fulcrum of the rear journal of the turbine rotor. At the same place, it was run on a high-speed dynamic balancing machine to check the dynamic balance of the compressor-turbine rotor assembly. During the test, it was found that the concentricity of the inner hole of the long-body dummy shaft fixture was difficult to ensure, which caused the test to jump. The authenticity of the obtained test data, Reliability, stability, and manufacturability have been questioned, seriously affecting the reliability and practical use of compressor-turbine rotor assemblies
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[0022] Depend on Figure 1-9 It can be seen that the fixture structure adopted by the technical solution of the present invention is: a decomposed structure, which includes a rotor assembly dynamic balance front fulcrum fixture set on the front journal 6 of the compressor, and a rotor assembly set on the rear journal 7 of the turbine. Dynamically balance the rear fulcrum fixture and correct the rotor assembly to dynamically balance the radial eccentric mechanism. Wherein the rotor assembly dynamic balance front fulcrum fixture set on the front journal 6 of the compressor is composed of a drive disc 1, a connecting shaft 3, a positioning shaft 5, and sequentially mechanically connected. The driving disc 1 is provided with a process hole connected with the low-speed dynamic balance testing machine. One end of the connecting shaft is a flange ring, and the flange ring is provided with a screw hole. The screw 4 in the screw hole is axially positioned and connected with the front j...
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A dynamic balance jig for a compressor-turbine rotor assembly, relating to a jig technology, it discloses a disassembled structure jig for the disadvantage of jumping in the test of the existing jig, which includes a set on the front journal of the compressor The rotor assembly dynamic balance front fulcrum fixture, the rotor assembly dynamic balance rear fulcrum fixture set on the turbine rear journal and the rotor assembly dynamic balance radial eccentric mechanism are corrected. Among them: the dynamic balance front fulcrum fixture of the rotor assembly is composed of a drive plate, a connecting shaft, a positioning shaft, and sequentially mechanically connected. The dynamic balance rear fulcrum fixture of the rotor assembly is a tubular technological rear bushing, and the middle part of the inner wall is provided with an annular inner flange for connection. The radial eccentric mechanism for correcting the dynamic balance of the rotor assembly includes a balance mandrel on which a positioning disc is arranged. The top block and the inclined block for adjusting the eccentricity are arranged on the plate. The total mass of the fixture is 1 / 2 of the mass of the object under test. The fixture does not generate jumps in the test engineering, and the assembly and disassembly are convenient and the cost is low.
Description
technical field [0001] The invention relates to a dynamic balance test jig, in particular to a jig for checking the dynamic balance test of a compressor-turbine rotor assembly. Background technique [0002] The dynamic balance inspection of the compressor-turbine rotor assembly is a key process in production. The existing technology is to use a long-body dummy shaft fixture, which is set at the fulcrum of the front journal of the compressor and at the fulcrum of the rear journal of the turbine rotor. At the same place, it was run on a high-speed dynamic balancing machine to check the dynamic balance of the compressor-turbine rotor assembly. During the test, it was found that the concentricity of the inner hole of the long-body dummy shaft fixture was difficult to ensure, which caused the test to jump. The authenticity of the obtained test data, Reliability, stability, and manufacturability have been questioned, seriously affecting the reliability and practical use of the com...
Claims
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IPC IPC(8): G01M1/14G01M1/02
Inventor 张娟赵运航彭会文刘建伟罗敏
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION