CN103397913B - A kind of low-pressure turbine band stator counterbalanced procedure - Google Patents
A kind of low-pressure turbine band stator counterbalanced procedure Download PDFInfo
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- CN103397913B CN103397913B CN201310272818.4A CN201310272818A CN103397913B CN 103397913 B CN103397913 B CN 103397913B CN 201310272818 A CN201310272818 A CN 201310272818A CN 103397913 B CN103397913 B CN 103397913B
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Abstract
A kind of low-pressure turbine band stator counterbalanced procedure, adopts the method being balanced with stator, and the general frame structure that application rigid structure is stronger supports and turns stator, its poised state is closer to engine behavior, it is to avoid the impact of back bush when balancing without stator; In general frame structure, adopt former and later two technique casings to connect and turn stator, front technique casing is wherein furnished with adapter ring match with low-pressure turbine stator casing, play the effect of supporting stator casing, rear bearing block passes through outer race and bearing fit, it is arranged on rear technique casing, is one of the fulcrum of balancing machine; Another fulcrum adopts two roller wheel bearings on balance sleeve, and roller surface adopts drum surface form, reduces front and back two fulcrum concentricity required precision. Advantages of the present invention: poised state, closer to engine behavior, avoids the impact of back bush when balancing without stator in equilibrium process, it is not necessary to be repeated dismounting work, substantially increase work efficiency.
Description
Technical field
The present invention relates to engine assembly field, particularly to a kind of low-pressure turbine band stator counterbalanced procedure.
Background technology
Prior art Low Pressure Turbine Rotor balances, and adopts the Low Pressure Turbine Rotor assembly without low pressure secondary guider and NO.5 bearing to carry out dynamic balancing. This kind of balance method and engine behavior there are differences, and after Low Pressure Turbine Rotor assembly completes balance, it is necessary under low-pressure turbine secondary rotor blade is divided, again secondary rotor blade press after low-pressure turbine two stage diverter is installed original position and assembles. Lower secondary rotor blade, destruction of balance state is divided after completing final dynamic balancing. Repeat dismounting, the very big workload adding operative, too increase the probability that mistake occurs simultaneously.
It addition, under needing to divide bearing without stator balance, after utilization, technique lining is balanced, the balance of Low Pressure Turbine Rotor can be produced impact by the amount of unbalance of technique lining. Owing to the bearing position of centre of gravity from whole Low Pressure Turbine Rotor balanced component is closer, so technique lining can be relatively larger on the impact of rotor balancing.
Summary of the invention
The invention aims to meet the requirement of engine assembly balance, spy provides a kind of low-pressure turbine band stator counterbalanced procedure.
The invention provides a kind of low-pressure turbine band stator counterbalanced procedure, it is characterized in that: described low-pressure turbine band stator counterbalanced procedure, in reseach of engine, production and overhaul process, electromotor Low Pressure Turbine Rotor is balanced, in Low Pressure Turbine Rotor equilibrium process, adopt the method being balanced with stator, the general frame structure that application rigid structure is stronger supports and turns stator, its poised state is closer to engine behavior, equilibrium process directly utilizes bearing, it is to avoid the impact of back bush when balancing without stator;
With low-pressure turbine stator and casing during balance, avoid the need for a point lower secondary rotor blade after completing final dynamic balancing, it is ensured that poised state will not be destroyed;In the general frame structure that rigidity is higher, adopt former and later two technique casings to connect and turn stator, front technique casing is wherein furnished with adapter ring match with low-pressure turbine stator casing, play the effect of supporting stator casing, rear bearing block passes through outer race and bearing fit, it is arranged on rear technique casing, is one of the fulcrum of balancing machine; Another fulcrum adopts two roller wheel bearings on balance sleeve, and roller surface adopts drum surface form largely to reduce front and back two fulcrum concentricity required precision.
In described equilibrium process, being connected with balancing machine power transmission shaft by the abutment sleeve before axle, ring flange, rotor driven rotates; The design of v-shaped bearing plate and threaded rod so that in equilibrium process, the indexing operation of front shaft sleeve is simple and convenient, front and back technique casing part adopts fastener for connection, facilitates and adds counterweight block in equilibrium process and be balanced; In the design process of balance tooling, for ensureing to reach balance quality, the rigidity of bearing block and the circular runout of mating surface are being controlled within 20 microns.
With low-pressure turbine stator and casing during balance, avoid the need for a point lower secondary rotor blade after completing final dynamic balancing, it is ensured that poised state will not be destroyed. Need band low-pressure turbine stator during due to balance, the invention solves the problem that stator casing is effectively supporting, conveniently balance assembly manipulation.
Advantages of the present invention:
Low-pressure turbine band stator counterbalanced procedure of the present invention, it is proposed in Low Pressure Turbine Rotor equilibrium process, adopts the method being balanced with stator. The general frame structure that this kind of balance method application rigid structure is stronger supports and turns stator, its poised state is closer to engine behavior, equilibrium process avoids the impact of back bush when balancing without stator, it is not necessary to be repeated dismounting work, substantially increase work efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is low-pressure turbine band stator balance tooling schematic diagram;
In figure, 1 is abutment sleeve, and 2 is roller, and 3 is V-type gripper shoe, and 4 is low-pressure turbine, and 5 is front technique casing, and 6 is adapter ring, and 7 is rear technique casing.
Detailed description of the invention
Embodiment 1
Present embodiments provide a kind of low-pressure turbine band stator counterbalanced procedure, it is characterized in that: described low-pressure turbine band stator counterbalanced procedure, in reseach of engine, production and overhaul process, electromotor Low Pressure Turbine Rotor is balanced, in Low Pressure Turbine Rotor equilibrium process, adopt the method being balanced with stator, the general frame structure that application rigid structure is stronger supports and turns stator, its poised state is closer to engine behavior, equilibrium process directly utilizes bearing, it is to avoid the impact of back bush when balancing without stator;
With low-pressure turbine stator and casing during balance, avoid the need for a point lower secondary rotor blade after completing final dynamic balancing, it is ensured that poised state will not be destroyed; In the general frame structure that rigidity is higher, adopt former and later two technique casings to connect and turn stator, front technique casing is wherein furnished with adapter ring match with low-pressure turbine stator casing, play the effect of supporting stator casing, rear bearing block passes through outer race and bearing fit, it is arranged on rear technique casing, is one of the fulcrum of balancing machine; Another fulcrum adopts two roller wheel bearings on balance sleeve, and roller surface adopts drum surface form largely to reduce front and back two fulcrum concentricity required precision.
In described equilibrium process, being connected with balancing machine power transmission shaft by the abutment sleeve before axle, ring flange, rotor driven rotates;The design of v-shaped bearing plate and threaded rod so that in equilibrium process, the indexing operation of front shaft sleeve is simple and convenient, front and back technique casing part adopts fastener for connection, facilitates and adds counterweight block in equilibrium process and be balanced; In the design process of balance tooling, for ensureing to reach balance quality, the rigidity of bearing block and the circular runout of mating surface are being controlled within 20 microns.
With low-pressure turbine stator and casing during balance, avoid the need for a point lower secondary rotor leaf embodiment after completing final dynamic balancing and solve the problem that stator casing is effectively supporting, conveniently balance assembly manipulation.
Claims (2)
1. a low-pressure turbine band stator counterbalanced procedure, it is characterized in that: described low-pressure turbine band stator counterbalanced procedure, in reseach of engine, production and overhaul process, electromotor Low Pressure Turbine Rotor is balanced, in Low Pressure Turbine Rotor equilibrium process, adopt the method being balanced with stator, the general frame structure that application rigid structure is stronger supports and turns stator, its poised state is closer to engine behavior, equilibrium process directly utilizes bearing, it is to avoid the impact of back bush when balancing without stator;
With low-pressure turbine stator and casing during balance, avoid the need for a point lower secondary rotor blade after completing final dynamic balancing, it is ensured that poised state will not be destroyed; In general frame structure, adopt former and later two technique casings to connect and turn stator, front technique casing is furnished with adapter ring, adapter ring matches with low-pressure turbine stator casing, front technique casing plays the effect of supporting stator casing, rear bearing block is arranged on rear technique casing, and by outer race and bearing fit, rear bearing block is one of fulcrum of balance; By two roller wheel bearings on balancing machine on balance sleeve as another balance fulcrum, roller surface adopts drum surface form, reduces front and back two fulcrum to concentricity required precision.
2. the low-pressure turbine band stator counterbalanced procedure described in claim 1, it is characterised in that: in described equilibrium process, Low Pressure Turbine Rotor is connected with balancing machine power transmission shaft by the abutment sleeve before axle, ring flange, and rotor driven rotates; The design of v-shaped bearing plate and threaded rod so that in equilibrium process, the indexing operation of front shaft sleeve is simple and convenient, front and back technique casing adopts fastener for connection, facilitates and adds counterweight block in equilibrium process and be balanced; In the design process of balance tooling, for ensureing to reach balance quality, the rigidity of bearing block and the circular runout of mating surface are controlled within 20 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272818.4A CN103397913B (en) | 2013-07-01 | 2013-07-01 | A kind of low-pressure turbine band stator counterbalanced procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310272818.4A CN103397913B (en) | 2013-07-01 | 2013-07-01 | A kind of low-pressure turbine band stator counterbalanced procedure |
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| Publication Number | Publication Date |
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| CN103397913A CN103397913A (en) | 2013-11-20 |
| CN103397913B true CN103397913B (en) | 2016-06-08 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104141637B (en) * | 2014-07-28 | 2016-06-01 | 中国南方航空工业(集团)有限公司 | The balance method of a kind of vertiplane auxiliary powerplant joint rotor |
| CN108792916B (en) * | 2018-05-30 | 2019-12-27 | 中国航发商用航空发动机有限责任公司 | Combined workpiece operation tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201892603U (en) * | 2010-12-03 | 2011-07-06 | 四川国际航空发动机维修有限公司 | Balancing tool for high-pressure rotor of engine |
| US9127555B2 (en) * | 2010-12-21 | 2015-09-08 | Solar Turbines Incorporated | Method for balancing rotating assembly of gas turbine engine |
| CN102967412A (en) * | 2012-11-12 | 2013-03-13 | 沈阳黎明航空发动机(集团)有限责任公司 | Dynamic balance fixture special for engine rotor and puller of dynamic balance fixture |
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