CN103397913A - Low-pressure turbine balancing method achieved by means of stator - Google Patents
Low-pressure turbine balancing method achieved by means of stator Download PDFInfo
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- CN103397913A CN103397913A CN2013102728184A CN201310272818A CN103397913A CN 103397913 A CN103397913 A CN 103397913A CN 2013102728184 A CN2013102728184 A CN 2013102728184A CN 201310272818 A CN201310272818 A CN 201310272818A CN 103397913 A CN103397913 A CN 103397913A
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Abstract
The invention discloses a low-pressure turbine balancing method achieved by means of a stator. According to the low-pressure turbine balancing method achieved by means of the stator, the stator is adopted for balancing, an integrated framework structure which is strong in rigidity is used for supporting a rotor and the stator, a balance state can be closer to the working state of an engine, and rear lining influence occurring when balancing is achieved without using the stator is avoided; in the integrated framework structure, a front technique casing and a rear technique casing are adopted to connect the rotor with the stator, an adapter ring is assembled on the front technique casing to be matched with a low-pressure turbine stator casing, the adapter ring plays a role in supporting the stator casing, a rear bearing seat is matched with a bearing through a bearing outer ring, and the rear bearing seat is installed on the rear technique casing and serves as one of the supporting points of a balancing machine; the other supporting point is arranged on a balancing shaft sleeve in a supporting mode through two idler wheels, the surface of each idler wheel is in a drum surface form, and then the requirements of the front supporting point and the rear supporting point for concentricity accuracy are lowered. The low-pressure turbine balancing method achieved by means of the stator has the advantages that the balance state can be closer to the working state of the engine, the rear lining influence occurring when balancing is achieved without using the stator is avoided during balancing, repeated dismantling and installation are not needed, and working efficiency is greatly improved.
Description
Technical field
The present invention relates to the engine assembly field, particularly a kind of low-pressure turbine band stator balancing method.
Background technique
Prior art Low Pressure Turbine Rotor balance, employing is not carried out dynamic balancing with the Low Pressure Turbine Rotor assembly of low pressure two stage diverters and NO.5 bearing.This kind balance method and engine behavior there are differences, and after the Low Pressure Turbine Rotor assembly completes balance, under low-pressure turbine secondary rotor blade need to being divided, install after low-pressure turbine two stage diverters and again the secondary rotor blade press to original position and assembled.After completing final dynamic balancing, divide lower secondary rotor blade, the destruction of balance state.Repeat dismounting, very large increase the workload of workman's operation, also increased simultaneously and wrong probability occurred.
In addition, be not with under the stator balance need to divide bearing, after utilizing, the technique lining carries out balance, and the amount of unbalance of technique lining can exert an influence to the balance of Low Pressure Turbine Rotor.Because bearing is closer apart from the position of centre of gravity of whole Low Pressure Turbine Rotor balanced component, thus the technique lining on balancing rotor to affect meeting larger.
Summary of the invention
The objective of the invention is in order to meet the requirement of engine assembly balance, the spy provides a kind of low-pressure turbine band stator balancing method.
The invention provides a kind of low-pressure turbine band stator balancing method, it is characterized in that: described low-pressure turbine band stator balancing method, in reseach of engine, production and overhaul process, the motor Low Pressure Turbine Rotor is carried out to balance, in the Low Pressure Turbine Rotor equilibrium process, the method of balance is carried out in employing with stator, the stronger integral frame support structure of application rigid construction turns stator, its state of equilibrium is more near engine behavior, in equilibrium process, directly utilize bearing, the impact of back bush while having avoided not with the stator balance;
During balance, with low-pressure turbine stator and casing, complete after final dynamic balancing and just do not need a minute lower secondary rotor blade, the assurance state of equilibrium can be not destroyed; In the higher integral frame structure of rigidity, adopt former and later two technique casings to connect and turn stator, wherein on front technique casing, being furnished with adapter ring matches with low-pressure turbine stator casing, play the effect of supporting stator casing, rear bearing block is by outer race and bearing fit, being arranged on rear technique casing, is one of fulcrum of balancing machine; Another fulcrum adopts two roller wheel bearings on balance sleeve, and roller surface adopts the drum surface form to reduce to a great extent front and back two fulcrums the concentricity required precision.
In described equilibrium process, by the abutment sleeve before axle, flange plate, with the balancing machine transmission shaft, be connected, rotor driven rotates; The design of v-shaped bearing plate and threaded stem, make in equilibrium process the transposition to front shaft sleeve simple to operation, and front and back technique casing spare adopts steel pipe to connect, and facilitates in equilibrium process to add equilibrate counterweight and carry out balance; In the design process of balance tooling, for guaranteeing to reach balance quality, in the circular runout of the rigidity to bearing support and fitting surface, be controlled within 20 microns.
During balance, with low-pressure turbine stator and casing, complete after final dynamic balancing and just do not need a minute lower secondary rotor blade, the assurance state of equilibrium can be not destroyed.During due to balance, need to be with the low-pressure turbine stator, the invention solves the effectively problem of supporting of stator casing, facilitate the balance assembly manipulation.
Advantage of the present invention:
Low-pressure turbine band stator balancing method of the present invention, propose, in the Low Pressure Turbine Rotor equilibrium process, to adopt the method for carrying out balance with stator.The integral frame support structure that this kind balance method application rigid construction is stronger turns stator, its state of equilibrium is more near engine behavior, while in equilibrium process, having avoided not with the stator balance, the impact of back bush, do not need to carry out the repetition disassemble and assemble work, greatly improved working efficiency.
The accompanying drawing explanation
The present invention is further detailed explanation below in conjunction with drawings and the embodiments:
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 the V-type dunnage, and 4 is low-pressure turbine, and 5 is front technique casing, and 6 is adapter ring, and 7 is rear technique casing.
Embodiment
The present embodiment provides a kind of low-pressure turbine band stator balancing method, it is characterized in that: described low-pressure turbine band stator balancing method, in reseach of engine, production and overhaul process, the motor Low Pressure Turbine Rotor is carried out to balance, in the Low Pressure Turbine Rotor equilibrium process, the method of balance is carried out in employing with stator, the stronger integral frame support structure of application rigid construction turns stator, its state of equilibrium is more near engine behavior, in equilibrium process, directly utilize bearing, the impact of back bush while having avoided not with the stator balance;
During balance, with low-pressure turbine stator and casing, complete after final dynamic balancing and just do not need a minute lower secondary rotor blade, the assurance state of equilibrium can be not destroyed; In the higher integral frame structure of rigidity, adopt former and later two technique casings to connect and turn stator, wherein on front technique casing, being furnished with adapter ring matches with low-pressure turbine stator casing, play the effect of supporting stator casing, rear bearing block is by outer race and bearing fit, being arranged on rear technique casing, is one of fulcrum of balancing machine; Another fulcrum adopts two roller wheel bearings on balance sleeve, and roller surface adopts the drum surface form to reduce to a great extent front and back two fulcrums the concentricity required precision.
In described equilibrium process, by the abutment sleeve before axle, flange plate, with the balancing machine transmission shaft, be connected, rotor driven rotates; The design of v-shaped bearing plate and threaded stem, make in equilibrium process the transposition to front shaft sleeve simple to operation, and front and back technique casing spare adopts steel pipe to connect, and facilitates in equilibrium process to add equilibrate counterweight and carry out balance; In the design process of balance tooling, for guaranteeing to reach balance quality, in the circular runout of the rigidity to bearing support and fitting surface, be controlled within 20 microns.
During balance, with low-pressure turbine stator and casing, complete after final dynamic balancing with regard to not needing a minute lower secondary rotor leaf embodiment to solve the effectively problem of supporting of stator casing, facilitate the balance assembly manipulation.
Claims (2)
1. low-pressure turbine band stator balancing method, it is characterized in that: described low-pressure turbine band stator balancing method, in reseach of engine, production and overhaul process, the motor Low Pressure Turbine Rotor is carried out to balance, in the Low Pressure Turbine Rotor equilibrium process, the method of balance is carried out in employing with stator, the stronger integral frame support structure of application rigid construction turns stator, its state of equilibrium is more near engine behavior, in equilibrium process, directly utilize bearing, the impact of back bush while having avoided not with the stator balance;
During balance, with low-pressure turbine stator and casing, complete after final dynamic balancing and just do not need a minute lower secondary rotor blade, the assurance state of equilibrium can be not destroyed; In the integral frame structure, adopt former and later two technique casings to connect and turn stator, wherein on front technique casing, being furnished with adapter ring matches with low-pressure turbine stator casing, play the effect of supporting stator casing, rear bearing block is by outer race and bearing fit, being arranged on rear technique casing, is one of fulcrum of balancing machine; Another fulcrum adopts two roller wheel bearings on balance sleeve, and roller surface adopts the drum surface form, has reduced front and back two fulcrums the concentricity required precision.
2. according to low-pressure turbine band stator balancing method claimed in claim 1, it is characterized in that: in described equilibrium process, by the abutment sleeve before axle, flange plate, with the balancing machine transmission shaft, be connected, rotor driven rotates; The design of v-shaped bearing plate and threaded stem, make in equilibrium process the transposition to front shaft sleeve simple to operation, and front and back technique casing spare adopts steel pipe to connect, and facilitates in equilibrium process to add equilibrate counterweight and carry out balance; In the design process of balance tooling, for guaranteeing to reach balance quality, in the circular runout of the rigidity to bearing support and fitting surface, be 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 |
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| 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 true CN103397913A (en) | 2013-11-20 |
| CN103397913B CN103397913B (en) | 2016-06-08 |
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| CN201310272818.4A Active CN103397913B (en) | 2013-07-01 | 2013-07-01 | A kind of low-pressure turbine band stator counterbalanced procedure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141637A (en) * | 2014-07-28 | 2014-11-12 | 中国南方航空工业(集团)有限公司 | Balancing method for combined rotor of helicopter auxiliary power unit |
| CN108792916A (en) * | 2018-05-30 | 2018-11-13 | 中国航发商用航空发动机有限责任公司 | Combination workpiece operates tooling |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20120151937A1 (en) * | 2010-12-21 | 2012-06-21 | Muscat Cory P | 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 |
-
2013
- 2013-07-01 CN CN201310272818.4A patent/CN103397913B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US20120151937A1 (en) * | 2010-12-21 | 2012-06-21 | Muscat Cory P | 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 |
Non-Patent Citations (2)
| Title |
|---|
| 王蕴琦 等: "《影响平衡质量的工艺要素分析》", 《航空发动机》, no. 3, 9 October 2004 (2004-10-09) * |
| 邓会霞: "《某发动机整机振动的分析与控制方法》", 《万方学位论文》, 30 April 2009 (2009-04-30) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141637A (en) * | 2014-07-28 | 2014-11-12 | 中国南方航空工业(集团)有限公司 | Balancing method for combined rotor of helicopter auxiliary power unit |
| 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 |
| CN108792916A (en) * | 2018-05-30 | 2018-11-13 | 中国航发商用航空发动机有限责任公司 | Combination workpiece operates tooling |
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| CN103397913B (en) | 2016-06-08 |
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