CN105157975A - Method for controlling and measuring sealing ring axial compression displacement deflection - Google Patents

Method for controlling and measuring sealing ring axial compression displacement deflection Download PDF

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Publication number
CN105157975A
CN105157975A CN201510577539.8A CN201510577539A CN105157975A CN 105157975 A CN105157975 A CN 105157975A CN 201510577539 A CN201510577539 A CN 201510577539A CN 105157975 A CN105157975 A CN 105157975A
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China
Prior art keywords
ring
obturaging
cushion block
axial compression
deflection
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CN201510577539.8A
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Chinese (zh)
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CN105157975B (en
Inventor
王云
杨蓓
吴逸飞
钟滨涛
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Zhongshan San Mei hi-tech Material Technology Co., Ltd.
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Nanchang Hangkong University
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Abstract

The invention discloses a method for controlling and measuring sealing ring axial compression displacement deflection in a high temperature and high pressure furnace; a W-shaped sealing ring is put on a lower pressure plate work surface that satisfies the parallelism requirement; at the same time, a spacing cushion block is set on the lower pressure plate work surface; an upper pressure plate moves downwards along an axis direction until the upper pressure plate working face compresses the spacing cushion block; the height of the sealing ring and the height of the spacing cushion block before the compression are measured, and the gap is the maximum sealing ring axial compression displacement deflection; if the compression deflection is to be changed, the upper pressure plate can be controlled to move upwards, and the displacement can be measured by a precision displacement sensor fixed on a pressure bar, thereby reckoning the real compression deflection of the sealing ring of the moment. The invention has the advantages of simple structure, easy manufacturing and installation; and the measurement result is accurate and reliable.

Description

Control and measurement is obturaged the method for ring axial compression displacement deflection
Technical field
The present invention relates to a kind of control and measurement to obturage the method for ring axial compression displacement deflection, particularly relate to a kind of ring of obturaging and can accurately to obturage the method for ring axial compression displacement deflection by control and measurement when carrying out lasting and low all cycling fatigue experiments in High Temperature High Pressure stove.
Background technology
In modern gas turbines and accessory system thereof, ring of obturaging is very important ingredient, and the quality of gas seal property directly affects performance and the efficiency of aeromotor.Obturage ring in sealing, in lasting and low all cycling fatigue experiments, needs test to obturage the Leakage Gas magnitude relation of the deflection of ring, inside and outside differential pressure and ring of obturaging, test the obturage enduring quality of ring under high pressure, hot environment and fatigure failure life-span.At a certain temperature in 15 DEG C to 800 DEG C temperature ranges, accurate control and measurement ring axial compression displacement deflection in test of obturaging is of crucial importance to test findings between 0.2mm-2.1mm.Because ring of obturaging is placed in test in airtight High Temperature High Pressure stove, the axial compression displacement deflection judged in the stove of High Temperature High Pressure or measure ring of obturaging is very difficult, the a certain reference field of general needs to ring of obturaging converts the outer a certain reference field of stove to, then uses multiple extensometer to carry out the data acquisition of displacement deformation amount to the outer reference field of stove.This method is very complicated, in making and installation cost, measuring accuracy, efficiency and reliability etc., there is certain deficiency.
Summary of the invention
A kind of ring of obturaging has been the object of the present invention is to provide can accurately to obturage the method for ring axial compression displacement deflection by control and measurement when carrying out lasting and low all cycling fatigue experiments in High Temperature High Pressure stove, can fast effectively control and measurement to obturage ring axial compression displacement deflection, improve the Efficiency and accuracy measured, simple and reliable for structure.
For achieving the above object, the present invention takes following technical scheme: a kind of in High Temperature High Pressure stove control and measurement to obturage the method for ring axial compression displacement deflection, it is characterized in that: after the opposing parallel degree Pass Test of upper pressing disc workplace requires, testpieces W type ring of obturaging is placed on pressing disc workplace, on pressing disc workplace, place limiting cushion block simultaneously, upper platen is moved downward in the axial direction by the high precision screw mandrel puller system be connected with upperpush rod, until stop when upper platen workplace compresses limiting cushion block, the W type before uncompressed obturage ring height ( h w ) and limiting cushion block height ( h d ) difference be the axial compression displacement of ring of obturaging maximum deformation quantity ( δ).As will compress variation be changed, can on move upperpush rod and by the small-range precise displacement sensor installed on upperpush rod, measure line displacement on upperpush rod ( h s ), ring actual compression of now obturaging amount is δ s =h w -h d - h s .
Described limiting cushion block adopts the material manufacture the same with ring of obturaging, to compensate the impact of rising-heat contracting-cold on ring actual compression distortion of obturaging.
Technique effect of the present invention is: can obturaging according to W, to produce the limiting cushion block of corresponding height corresponding with it for the requirement of ring axial compression displacement maximum deformation quantity, determine maximum compression deflection by the sudden change of platen snap-in force on indirect inspection, solved a difficult problem for the test compress variation of ring of accurately measuring and control to obturage under airtight high temperature and high pressure environment simultaneously outward by the small-range precise displacement sensor hung on upperpush rod.The ring axial compression displacement deflection of obturaging in High Temperature High Pressure stove is controlled with this structure and method energy Measurement accuracy, easy and simple to handle, the fast efficiency of installation rate is high, measurement result accurately and reliably, be applicable to very much obturaging the lasting and low all cycling fatigue experiment of ring in airtight High Temperature High Pressure stove time accurate control and measurement to obturage ring axial compression displacement deflection.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
In figure: 1. on ball crown type external furnace body 2. pressing disc 3. jacket cylinder 4. inner barrel 5. inside dial indicator joint 6. import/exhaust joint 7. lower flange 8. upper flange 9. O-ring seal 10. short cylinder body 11., platen 12. ball crown type inner furnace body 13. pressure tapping 14. upperpush rod 15. axle sleeve joint 16. safety valve joint 17. inlet/outlet joint 18.W type is obturaged ring 19. thermocouple junction 20. limiting cushion block 21. down-pressed pole 22. base of furnace body 23. support 24. spherical support
A. pressure gauge connection b. relief valve connection c1-c2. depression bar interface d1-d4. thermopair interface e1-e4. inside dial indicator interface f1-f2. import/exhaust mouth g1-g4 intake-outlet
Fig. 2 is ring axial compression displacement deflection schematic diagram of obturaging.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 1, the-loop test bed body of heater of obturaging divides upper and lower two parts, lower volume is welded into is formed by spherical external furnace body 1-a, spherical inner furnace body 12-a, jacket cylinder 3, inner barrel 4, lower volume installs inside dial indicator joint 5, import/exhaust joint 6 and thermocouple junction 19 respectively in surrounding perforate, at lower volume bottom centre perforate installation shaft bell and spigot joint 15-a.Upper furnace body is welded to form by spherical external furnace body 1-b, spherical inner furnace body 12-b, short cylinder body 10, at upper furnace body top drilling setting pressure meter connector 13, axle sleeve joint 15-b, safety valve joint 16, inlet/outlet joint 17 respectively.Lower volume external welding lower flange 7, upper furnace body external welding upper flange 8, upper and lower flange is connected by securing members such as bolts, is also provided with O-ring seal 9 between upper and lower flange.Fill insulant material (upper furnace body and lower volume are all like this) between spherical external furnace body 1, spherical inner furnace body 12.These structures the-loop test bed high temperature furnace that can ensure to obturage reaches the temperature of design, pressure detecting temperature, pressure in process of the test smoothly under test conditions.
Upper platen 11 is fixedly connected with upperpush rod 14, and upperpush rod 14 is connected with the outer high precision screw mandrel puller system of testing table through the axle sleeve joint 15-b at upper furnace body top.Pressing disc 2 is fixedly connected with down-pressed pole 21, and down-pressed pole 21 is through the axle sleeve joint 15-a bottom lower volume, and pressing disc 2 is fixedly connected with lower volume, and the spherical external furnace body 1 of lower volume is welded and fixed with base of furnace body 22.Upperpush rod 14 drives upper platen 11 to move down, and loads downward power, and this masterpiece is used in the upper plane of pressing disc 2, and now upper and lower platen two plane laminating compresses.Below in the middle part of support 23 supporting surface is provided with spherical support 24, automatically support 23 supporting surface and the parallel laminating of base of furnace body 22 lower surface is adjusted to by during downward power by spherical support 24 at supporting surface axis direction, by bolt, base of furnace body 22 and support 23 are connected and fixed, make upper pressing disc workplace keeping parallelism installment state in test subsequently.
W type ring 18 of obturaging to be placed in high temperature furnace on pressing disc 2 workplace, simultaneously on pressing disc 2 workplace, W type obturage ring 18 inside place limiting cushion block 20, upper platen 11 is moved downward in the axial direction by the outside high precision screw mandrel puller system be connected with upperpush rod 14, until stop when upper platen 11 compresses limiting cushion block 20.
As shown in Figure 2, the W type before uncompressed obturage ring height ( h w ) and limiting cushion block height ( h d ) both difference be ring of obturaging axial compression displacement maximum deformation quantity ( δ).
δ=h w -h d
Measure respectively uncompressed before W type obturage ring height ( h w ) and limiting cushion block height ( h d ), can by above formula calculate axial compression displacement maximum deformation quantity ( δ).As will compress variation be changed, can control platen 11 moves, measure its amount of movement by the precise displacement sensor be connected on upperpush rod 14, can extrapolate ring of now obturaging actual compression deflection ( h s ), extrapolating ring actual compression amount of now obturaging is δ s =h w -h d - h s .for compensates is on the impact of actual compression deflection, limited block can adopt and ring homogeneous material of obturaging.

Claims (3)

1. one kind in High Temperature High Pressure stove control and measurement to obturage the method for ring axial compression displacement deflection, it is characterized in that: after the opposing parallel degree Pass Test of upper pressing disc workplace requires, testpieces W type ring of obturaging is placed on pressing disc workplace, on pressing disc workplace, place limiting cushion block simultaneously, upper platen is moved downward in the axial direction by the high precision screw mandrel puller system be connected with upperpush rod, until stop when upper platen workplace compresses limiting cushion block, the W type before uncompressed is obturaged ring height h w with limiting cushion block height h d difference be the maximum deformation quantity of the axial compression displacement of ring of obturaging δ, as will compress variation be changed, can on move upperpush rod and by the small-range precise displacement sensor installed on upperpush rod, measure line displacement on upperpush rod h s , ring actual compression of now obturaging amount is δ s =h w -h d - h s .
2. according to claim 1 a kind of in High Temperature High Pressure stove control and measurement to obturage the method for ring axial compression displacement deflection, it is characterized in that: measure respectively uncompressed before W type to obturage ring height h w with limiting cushion block height h d , according to measured value and formula δ=h w -h d , calculate the axial compression displacement maximum deformation quantity of ring of obturaging δ,again according to line displacement on upperpush rod h s can calculate actual compression amount is δ s =h w -h d - h s .
3. according to claim 1 a kind of in High Temperature High Pressure stove control and measurement to obturage the method for ring axial compression displacement deflection, it is characterized in that: limiting cushion block adopts the material manufacture the same with ring of obturaging, to compensate the impact of rising-heat contracting-cold on ring actual compression distortion of obturaging.
CN201510577539.8A 2015-09-11 2015-09-11 The method that ring axial compression displacement deflection is obturaged in control and measurement Active CN105157975B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110441046A (en) * 2019-09-10 2019-11-12 南昌航空大学 It is a kind of that ring test switching device is obturaged based on graphite-seal ring
CN110441047A (en) * 2019-09-10 2019-11-12 南昌航空大学 It is a kind of that ring test switching device is obturaged based on corrugated ring
CN110879139A (en) * 2019-11-18 2020-03-13 南昌航空大学 Sealing ring test device with deformation error compensation

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CN201505894U (en) * 2009-09-17 2010-06-16 施耐德(北京)中低压电器有限公司 Positioning fixture for assembling rotary handle spring
CN201569607U (en) * 2009-12-21 2010-09-01 申雅密封件有限公司 Sealing strip test tool
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CN102252812A (en) * 2011-06-08 2011-11-23 沈阳飞机工业(集团)有限公司 Device for testing strength and distortion of thin-wall part
CN102621003A (en) * 2012-04-12 2012-08-01 宁波中桥精密机械有限公司 Metal part compression change testing device
CN202734808U (en) * 2012-08-09 2013-02-13 北京有色金属研究总院 Device for accurately measuring compression deformation
CN104359635A (en) * 2014-11-24 2015-02-18 中国航空动力机械研究所 Multifunctional all-working-condition metal elastic sealing ring testing device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201505894U (en) * 2009-09-17 2010-06-16 施耐德(北京)中低压电器有限公司 Positioning fixture for assembling rotary handle spring
CN201569607U (en) * 2009-12-21 2010-09-01 申雅密封件有限公司 Sealing strip test tool
CN102240704A (en) * 2011-05-17 2011-11-16 马鞍山钢铁股份有限公司 Hollow roller way straightening device and straightening method
CN102252812A (en) * 2011-06-08 2011-11-23 沈阳飞机工业(集团)有限公司 Device for testing strength and distortion of thin-wall part
CN102621003A (en) * 2012-04-12 2012-08-01 宁波中桥精密机械有限公司 Metal part compression change testing device
CN202734808U (en) * 2012-08-09 2013-02-13 北京有色金属研究总院 Device for accurately measuring compression deformation
CN104359635A (en) * 2014-11-24 2015-02-18 中国航空动力机械研究所 Multifunctional all-working-condition metal elastic sealing ring testing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110441046A (en) * 2019-09-10 2019-11-12 南昌航空大学 It is a kind of that ring test switching device is obturaged based on graphite-seal ring
CN110441047A (en) * 2019-09-10 2019-11-12 南昌航空大学 It is a kind of that ring test switching device is obturaged based on corrugated ring
CN110441047B (en) * 2019-09-10 2020-11-20 南昌航空大学 Sealing ring test switching device based on corrugated ring
CN110879139A (en) * 2019-11-18 2020-03-13 南昌航空大学 Sealing ring test device with deformation error compensation

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Patentee after: Zhongshan San Mei hi-tech Material Technology Co., Ltd.

Address before: 330000 696 Fenghe South Road, Nanchang, Jiangxi.

Patentee before: Nanchang Univ. of Aviation