CN106768710A - A kind of multistage brush seal test method - Google Patents

A kind of multistage brush seal test method Download PDF

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Publication number
CN106768710A
CN106768710A CN201710195649.7A CN201710195649A CN106768710A CN 106768710 A CN106768710 A CN 106768710A CN 201710195649 A CN201710195649 A CN 201710195649A CN 106768710 A CN106768710 A CN 106768710A
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CN
China
Prior art keywords
brush seal
multistage
test
brush
detecting
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CN201710195649.7A
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Chinese (zh)
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CN106768710B (en
Inventor
常允乐
张振生
胡广阳
慕伟
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AECC Shenyang Engine Research Institute
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AECC Shenyang Engine Research Institute
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass

Abstract

The invention discloses a kind of multistage brush seal test method.The multistage brush seal test method is comprised the following steps:Step 1:Testpieces to multistage brush seal is processed;Step 2:First order brush seal is attached in the mounting seat in multistage brush seal pilot system, then three groups of thermocouples and hollow pipe are incorporated into the groove of brush seal back plate respectively by threading hole, test lead is pressed in groove with second level brush seal then;Step 3:Until be fixed on displacement transducer on support again after other grade of brush seal of loading by repeat step 2;Step 4:For multistage brush seal pilot system installs torquemeter, temperature-detecting device, pressure-detecting device, displacement transducer and flowmeter;Step 5:Carry out multistage brush seal experiment;Step 6:Detection parameter.The multistage brush seal test method of the application can carry out performance study to brush sealing leak rate.

Description

A kind of multistage brush seal test method
Technical field
The present invention relates to engine high pressure compressor technical field, more particularly to a kind of multistage brush seal experiment side Method.
Background technology
Engine high pressure blower outlet has high temperature, High Pressure Difference, high-revolving bad working environments, if going out in high-pressure compressor The sealing of the other forms such as comb tooth is replaced using multistage brush seal at mouthful, the secondary air after high-pressure compressor can be substantially reduced Leakage, reduces seal pan back cavity pressure, plays the effect of the axial force for reducing high pressure rotor.
However, prior art can only carry out performance test for single-stage brush seal, it is impossible to which multistage brush seal is obturaged Effect carries out systematic research;Existing brush leakage test method cannot seal the pressure of at different levels, Temperature Distribution and carry out to brush Data analysis;Existing brush leakage test method can only be from the angle analysis brush sealing property of stator (brush sealing), it is impossible to study Influence of the axle, circular runout of brush canned rotor (sealed track) to brush sealing.
Thus, it is desirable to have a kind of technical scheme come overcome or at least mitigate prior art at least one drawbacks described above.
The content of the invention
Overcome it is an object of the invention to provide a kind of multistage brush seal test method or at least mitigate prior art At least one drawbacks described above.
To achieve the above object, the present invention provides a kind of multistage brush seal test method, for multistage brush seal Testpieces tested, it is characterised in that the multistage brush seal test method is comprised the following steps:Step 1:To multistage The testpieces of brush seal is processed, respectively the groove milling in the preceding three-level brush seal back plate of multistage brush seal;Step 2: First order brush seal is attached in the mounting seat in multistage brush seal pilot system, then by threading hole respectively by three groups Thermocouple and hollow pipe are incorporated into the groove of brush seal back plate, until exposing backboard internal diameter, then use second level brush seal Test lead is pressed in groove;Step 3:After repeat step 2 is until load other grade of brush seal, compressed with pressing plate, then will Displacement transducer is fixed on support;Step 4:For multistage brush seal pilot system installs torquemeter, temperature-detecting device, pressure Force checking device, displacement transducer and flowmeter;Step 5:Multistage brush seal experiment is carried out, motor is rotated and increased through gear-box After speed, by torquemeter motoring ring test section main shaft;Step 6:Spindle parameters are recorded by torquemeter;Remembered by temperature-detecting device Record the temperature between brush seals at different levels, the pressure between brush seals at different levels recorded by pressure-detecting device, by displacement Sensor measurement rotor disk bounce;The slip of brush seals at different levels is measured by flowmeter.
Preferably, the step 1 is specially:Respectively in the preceding three-level brush seal back plate of multistage brush seal circumferentially Milling 6 depth and width in direction are the groove of 1.5mm, the installation site corresponding with brush seal back plate groove on brush sealed installing seat Bore 18 threading holes.
Preferably, the step 4 is specially:The temperature-detecting device be arranged on multistage brush seal it is at different levels between.
Preferably, the pressure-detecting device be arranged on multistage brush seal it is at different levels between.
Preferably, institute's displacement sensors are arranged on one end of axle brush sealed track.
Preferably, the step 4 is specially:The flowmeter is arranged on air leak outlet position.
The multistage brush seal test method of the application not only can carry out performance study to brush sealing leak rate, can be with Sealing the pressure of at different levels, Temperature Distribution to multistage brush carries out data analysis, design and application offer tool to multistage brush sealing There is great importance.The multistage brush seal test method of the application can be not only tested stator part (brush sealing), Axle, the circular runout of rotor (sealed track) can also be monitored, the blank of rotor parameter in brush leakage test database has been filled up, Help to provide help to the design that brush is sealed from the angle of rotor.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the multistage brush seal test method of the embodiment of the application one.
Fig. 2 is the test section structural representation of the multistage brush seal test method shown in Fig. 1.
Fig. 3 is the structural representation of the brush seal back plate of the multistage brush seal test method shown in Fig. 1.
Fig. 4 is the structure enlarged diagram of the test section of the multistage brush seal test method shown in Fig. 2.
Fig. 5 is the pilot system schematic diagram of the multistage brush seal test method shown in Fig. 1.
Reference:
1 Multistage brush seal 4 Hollow pipe
2 Mounting seat 5 Displacement transducer
3 Thermocouple 6 Muffler
7 Heater 8 Test section
Specific embodiment
To make the purpose, technical scheme and advantage of present invention implementation clearer, below in conjunction with the embodiment of the present invention Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from start to finish or class As label represent same or similar element or the element with same or like function.Described embodiment is the present invention A part of embodiment, rather than whole embodiments.Embodiment below with reference to Description of Drawings is exemplary, it is intended to used It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Under Face is described in detail with reference to accompanying drawing to embodiments of the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear", The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " are based on accompanying drawing institute The orientation or position relationship for showing, are for only for ease of the description present invention and simplify description, rather than the dress for indicating or implying meaning Put or element with specific orientation, with specific azimuth configuration and operation, therefore it is not intended that must be protected to the present invention The limitation of scope.
Fig. 1 is the schematic flow sheet of the multistage brush seal test method of the embodiment of the application one.Fig. 2 is shown in Fig. 1 The test section structural representation of multistage brush seal test method.Fig. 3 is the brush of the multistage brush seal test method shown in Fig. 1 Structural representation Fig. 4 of formula seal back plate is that the structure amplification of the test section of the multistage brush seal test method shown in Fig. 2 is shown It is intended to.
Multistage brush seal test method as shown in Figure 1 is comprised the following steps:Step 1:Examination to multistage brush seal Test part to be processed, respectively the groove milling in the preceding three-level brush seal back plate of multistage brush seal 1 (referring to Fig. 3);Step 2:Will First order brush seal is attached to (referring to Fig. 2) in the mounting seat 2 in multistage brush seal pilot system, then by threading hole point Three groups of thermocouples 3 and hollow pipe 4 are not incorporated into the groove of brush seal back plate, until expose backboard internal diameter, then with second Be pressed in groove test lead (referring to Fig. 3) by level brush seal;Step 3:Repeat step 2 is until load other grade of brush seal Afterwards, compressed with pressing plate, then displacement transducer is fixed on support;Step 4:For multistage brush seal pilot system installs moment of torsion Instrument, temperature-detecting device, pressure-detecting device, displacement transducer 5 and flowmeter;Step 5:Carry out multistage brush seal examination Test, after motor is rotated through gear-box speedup, by torquemeter motoring ring test section main shaft;Step 6:Main shaft is recorded by torquemeter Parameter;Temperature between brush seals at different levels is recorded by temperature-detecting device, records at different levels brush by pressure-detecting device Pressure between sealing, is beated by displacement sensor rotor disk;The leakage of brush seals at different levels is measured by flowmeter Rate.
The multistage brush seal test method of the application not only can carry out performance study to multistage brush sealing leak rate, also The pressure of at different levels, Temperature Distribution can be sealed to multistage brush carries out data analysis, and the design and application to multistage brush sealing are carried For with great importance.The multistage brush seal test method of the application can be not only tried stator part (brush sealing) Test, axle, the circular runout of rotor (sealed track) can also be monitored, filled up the sky of rotor parameter in brush leakage test database In vain, contribute to provide help to the design that brush is sealed from the angle of rotor.
Referring to Fig. 3, in the present embodiment, step 1 is specially:Respectively in the brush seal back plates at different levels of multistage brush seal On 6 depth and width of along the circumferential direction milling be groove for 1.5mm, it is corresponding with brush seal back plate groove on brush sealed installing seat Installation site bore 18 threading holes.
In the present embodiment, the step 4 is specially:The temperature-detecting device is arranged on the at different levels of multistage brush seal Between.
In the present embodiment, the pressure-detecting device be arranged on multistage brush seal it is at different levels between.
Referring to Fig. 4, in the present embodiment, institute's displacement sensors are arranged on one end of axle brush sealed track.
In the present embodiment, step 4 is specially:Flowmeter is arranged on air leak outlet position.
Referring to Fig. 5, Fig. 5 is the pilot system schematic diagram of the multistage brush seal test method shown in Fig. 1.Experiment air inlet warp After vacuum tank voltage stabilizing, pass sequentially through electric control valve (regulation inlet pressure), heater 7 (regulation intake air temperature) and enter experiment Section.In test section 8, experiment air inlet excludes (experiment segment structure from A chambers and B chambers respectively through the gap between brush seal and rotor See Fig. 2), make a service test.From test section discharge high-temperature gas it is water cooled but after, by electric control valve (regulation outlet Pressure), muffler 6 is discharged in air.Each section of pilot system needs to be respectively mounted flowmeter, temperature, pressure test device use In measurement test data and monitoring test state.
It is last it is to be noted that:The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent Pipe has been described in detail to the present invention with reference to the foregoing embodiments, it will be understood by those within the art that:It is still Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced Change;And these modifications or replacement, do not make the essence of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution God and scope.

Claims (6)

1. a kind of multistage brush seal test method, tests for the testpieces to multistage brush seal, it is characterised in that The multistage brush seal test method is comprised the following steps:
Step 1:Testpieces to multistage brush seal is processed, brush close in the preceding three-level of multistage brush seal (1) respectively Groove milling on envelope backboard;
Step 2:In the mounting seat (2) that first order brush seal is attached in multistage brush seal pilot system, then by wearing Be incorporated into the groove of brush seal back plate for three groups of thermocouples (3) and hollow pipe (4) respectively by string holes, until expose backboard internal diameter, Then test lead is pressed in groove with second level brush seal;
Step 3:After repeat step 2 is until load other grade of brush seal, compressed with pressing plate, then displacement transducer is fixed on branch On frame;
Step 4:For multistage brush seal pilot system installs torquemeter, temperature-detecting device, pressure-detecting device, displacement sensing Device (5) and flowmeter;
Step 5:Multistage brush seal experiment is carried out, it is main by torquemeter motoring ring test section after motor is rotated through gear-box speedup Axle;
Step 6:Spindle parameters are recorded by torquemeter;By temperature-detecting device record temperature between brush seals at different levels, Pressure between brush seals at different levels is recorded by pressure-detecting device, is beated by displacement sensor rotor disk;Pass through Flowmeter measures the slip of brush seals at different levels.
2. multistage brush seal test method as claimed in claim 1, it is characterised in that the step 1 is specially:Exist respectively 6 depth and width of along the circumferential direction milling are the groove of 1.5mm in the preceding three-level brush seal back plate of multistage brush seal, in brush Installation site corresponding with brush seal back plate groove bores 18 threading holes on sealed installing seat.
3. multistage brush seal test method as claimed in claim 2, it is characterised in that the step 4 is specially:The temperature Degree detection means be arranged on multistage brush seal it is at different levels between.
4. multistage brush seal test method as claimed in claim 3, it is characterised in that the pressure-detecting device is arranged on Multistage brush seal it is at different levels between.
5. multistage brush seal test method as claimed in claim 4, it is characterised in that institute's displacement sensors are arranged on axle One end of brush sealed track.
6. multistage brush seal test method as claimed in claim 5, it is characterised in that the step 4 is specially:The stream Gauge is arranged on air leak outlet position.
CN201710195649.7A 2017-03-29 2017-03-29 A kind of multistage brush seal test method Active CN106768710B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107702868A (en) * 2017-08-15 2018-02-16 沈阳航空航天大学 A kind of brush seal experimental apparatus for capability vdiverse in function

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1030084A3 (en) * 1999-02-18 2004-01-07 General Electric Company Method and apparatus for determining if brush seals are defective
CN101375089A (en) * 2006-01-26 2009-02-25 西门子公司 Multi-stage brush seal
CN202599613U (en) * 2012-04-05 2012-12-12 中国航空工业集团公司沈阳发动机设计研究所 Large-diameter multifunctional flow path sealing test apparatus
CN202599624U (en) * 2012-04-06 2012-12-12 中国航空工业集团公司沈阳发动机设计研究所 High-pressure sealing test structure
CN103091056A (en) * 2013-01-14 2013-05-08 清华大学 Multifunctional brush type sealing experiment system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1030084A3 (en) * 1999-02-18 2004-01-07 General Electric Company Method and apparatus for determining if brush seals are defective
CN101375089A (en) * 2006-01-26 2009-02-25 西门子公司 Multi-stage brush seal
CN202599613U (en) * 2012-04-05 2012-12-12 中国航空工业集团公司沈阳发动机设计研究所 Large-diameter multifunctional flow path sealing test apparatus
CN202599624U (en) * 2012-04-06 2012-12-12 中国航空工业集团公司沈阳发动机设计研究所 High-pressure sealing test structure
CN103091056A (en) * 2013-01-14 2013-05-08 清华大学 Multifunctional brush type sealing experiment system

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Title
曹广州: "刷式封严结构的泄漏特性研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107702868A (en) * 2017-08-15 2018-02-16 沈阳航空航天大学 A kind of brush seal experimental apparatus for capability vdiverse in function
CN107702868B (en) * 2017-08-15 2019-04-26 沈阳航空航天大学 A kind of brush seal experimental apparatus for capability vdiverse in function

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