CN102928178B - Differential-pressure sealing test device and test method thereof - Google Patents

Differential-pressure sealing test device and test method thereof Download PDF

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Publication number
CN102928178B
CN102928178B CN201210425496.8A CN201210425496A CN102928178B CN 102928178 B CN102928178 B CN 102928178B CN 201210425496 A CN201210425496 A CN 201210425496A CN 102928178 B CN102928178 B CN 102928178B
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China
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detected
base
sealing
test
gland
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CN201210425496.8A
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Chinese (zh)
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CN102928178A (en
Inventor
刘姝
师俊东
张春华
孙玉民
赵冬梅
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沈阳黎明航空发动机(集团)有限责任公司
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Priority to CN201210425496.8A priority Critical patent/CN102928178B/en
Publication of CN102928178A publication Critical patent/CN102928178A/en
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Publication of CN102928178B publication Critical patent/CN102928178B/en

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Abstract

The invention discloses a differential-pressure sealing test device and a test method thereof, belonging to the technical field of sealing test. The test device comprises a nozzle sealing component, a tube seat sealing component and a support component, wherein the support component comprises a base; an inner support is arranged on the base; a pressure cover is arranged above the inner support and connected with the base through a main shaft; pull rods are arranged between the base and the pressure cover; a sealing ring is arranged between the detected member and the pressure cover as well as the base; and a first inner cavity sealing ring is arranged on the lower end surface of an inner cavity of the detected member. The test method comprises the following steps of: mounting the inner cavity sealing ring, the nozzle sealing component and the tube seat sealing component on the detected member; sticking a sealing pad on the end surface of the sealing ring, mounting the two on the end surface of the detected member together, and mounting the detected member on the base through the first sealing ring; mounting multiple pull rods between the base and the pressure cover; mounting the pressure cover and compacting the detected member through a compression nut connected with the main shaft; and pressing an outer cavity of the detected member, and then pressing the inner cavity for testing.

Description

A kind of pressure reduction sealing test device and method of testing thereof

Technical field

The invention belongs to sealing test technical field, particularly relate to a kind of pressure reduction sealing test device and method of testing thereof, be mainly used in multi-cavity in the work of Aeronautics and Astronautics series products and there is the sealing test of pressure reduction.

Background technology

At mechanical engineering field, the working environment of parts thereof is extremely severe, need bear tens times even atmospheric pressure of tens times.It is the necessary guarantee guaranteeing equipment and even personal safety that this type component carries out sealing test test before input life's work, the especially combustor section of Aeronautics and Astronautics series products, and volume of part is large, and quality weighs and complex structure; There is single chamber or two-chamber pressure large, all kinds of different base sealing difficulty, often there is frock main shaft cracking in test, form of thread elongates, the pull rod screw disorderly problems such as button, screw disengaging, each base, nozzle, small end mounting edge leaks, interior exocoel mixes chamber greatly, caulking gum desmorrhexis and detected member distortion.Along with improving constantly of Aeronautics and Astronautics series products performance, more and more high to the requirement of pressure under some working environment; For meeting the simulation test under some particular condition, especially High Voltage multi-cavity large thin-wall type component, is badly in need of pressure sealing test device and the method for set of system.

Summary of the invention

For prior art Problems existing, the invention provides a kind of pressure reduction sealing test device and method of testing thereof, its can meet High Voltage multi-cavity large-scale complex thin-wall type component dispatch from the factory before the requirement of pressure reduction sealing test.

To achieve these goals, the present invention adopts following technical scheme, a kind of pressure reduction sealing test device, comprises the sealed nozzle assembly being arranged on detected member nozzle place, the base seal assembly being arranged on detected member base place and supporting component; Described supporting component comprises base, described base is provided with inner support, above inner support, is provided with gland, and described gland is connected with base by main shaft; Several pull bars are provided with between described base and gland, detected member is fixed in the inner support between base and gland, between detected member and gland, base, be respectively arranged with sealing ring, the inner chamber lower surface of described detected member is provided with the first bore seal ring.

In order to ensure butt-end packing, between described sealing ring end face and detected member, be respectively arranged with sealing gasket.

In order to ensure radial seal, between described base and the first sealing ring, being provided with an O type circle, between described gland and the second sealing ring, being provided with the 2nd O type circle, between described inner support and the first bore seal ring, be provided with the 3rd O type circle.

Described sealed nozzle assembly adopts plug screw compressing structure, is made up of plug screw, plug and sealed nozzle pad, and described plug screw compresses sealed nozzle pad by plug.

In order to seal the nozzle position of unprocessed black skin, the inclined-plane of described sealed nozzle pad is consistent with the inclination angle of inclined plane of detected member nozzle.

Described base seal assembly adopts screw-pressing structure, is made up of base sealing gasket, sealing socket, screw rod and sealing blanking cover; One end of described screw rod compresses base sealing gasket by sealing socket, and the other end is connected with nut by sealing blanking cover.

In order to realize better sealing effectiveness, the inclined-plane of described sealing socket is consistent with the inclination angle of inclined plane of detected member base.

Several pull bars described are distributed between base and gland symmetrically.

Several pull bars described adopt symmetrical assembling, and the Screw assembly screw-down torque of each pull bar is consistent.

Adopt the method for testing of described pressure reduction sealing test device, comprise the steps:

Step one: install the first bore seal ring in the inner chamber lower surface of detected member;

Step 2: install sealed nozzle assembly at the nozzle place of detected member;

Step 3: install base seal assembly at the base place of detected member;

Step 4: bonding first sealing gasket on the first sealing ring end face, is then arranged on an end face of detected member together;

Step 5: the detected member after installing is arranged on base by the first sealing ring;

Step 6: bonding second sealing gasket on the second sealing ring end face, is then arranged on another end face of detected member together;

Step 7: install several pull bars between base and gland;

Step 8: install gland, and compress detected member by the gland nut be connected with main shaft;

Step 9: the exocoel to detected member is suppressed, the inner chamber then to detected member is suppressed, and carries out pressure reduction sealing test to detected member.

Beneficial effect of the present invention:

Adopt pressure reduction sealing test device of the present invention and method of testing thereof, can meet High Voltage multi-cavity large-scale complex thin-wall type component dispatch from the factory before the requirement of pressure reduction sealing test, ensure that the Successful tests of product; Can be applicable to engine chamber part two-chamber pressure reduction sealing test, and be applicable to variously have the two-chamber of similar characteristics or the High Voltage testing experiment of multi-cavity parts, range of application is wide, prospect is extensive, reduces expenses, reduces costs.

Accompanying drawing explanation

Fig. 1 is the structural representation of pressure reduction sealing test device of the present invention;

Fig. 2 is the structural representation of sealed nozzle assembly of the present invention;

Fig. 3 is the structural representation of base seal assembly of the present invention;

In figure, 1--base, 2--detected member, 3--gland, 4--main shaft, 5--tensimeter, 6--sealed nozzle assembly, 7--inner support, 8--base seal assembly, 9--first bore seal ring, 10--high-voltage switch gear, 11--pull bar, 12--nut, 13--the 2nd O type circle, 14--first sealing ring, 15--first sealing gasket, 16-the one O type circle, 17--the 3rd O type circle, 18--second sealing ring, 19--second bore seal ring, 20--gland nut, 21--second sealing gasket, 22--inlet valve, 23-exocoel, 24-inner chamber, 25-supporting component, 61-sealed nozzle pad, 62-plug, 63-plug screw, 81-sealing blanking cover, 82-screw rod, 83-base sealing gasket, 84-sealing socket.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

The complex large-sized thin-walled parts that the two-chamber of application the present invention to aeromotor exists pressure difference carries out pressure reduction sealing test.The nearly 1m of this diameter of part, height overall 500 ~ 600mm, part has more or less a hundred uneven, different base, can be only 2 ~ 5mm by front cover.By designing requirement, thorough seal is carried out to this part, then suppress; Designing requirement suppress produce in process suppress axial force and can not be born by casing, and ensure that mounting edge does not produce distortion, exocoel is suppressed to 0 ~ 2.8 MPa, inner chamber and exocoel keep pressure reduction 0 ~ 1.3 MPa, keep 8 ~ 15 minutes, if welding and mounting edge place ne-leakage, suppress rear small end mounting edge and beat at 0.01mm, verticality is Φ 0.01mm, and 4 place's right alignmenies are Φ 0.05mm; Inside and outside large end, casing is beated all within the scope of 0.01 ~ 0.03mm, then this part pressure reduction sealing test is qualified.

As shown in FIG. 1 to 3, a kind of pressure reduction sealing test device, comprises the sealed nozzle assembly 6 being arranged on detected member 2 nozzle place, the base seal assembly 8 being arranged on detected member 2 base place and supporting component 25; Described supporting component 25 comprises base 1, described base 1 is provided with inner support 7, is provided with gland 3 above inner support 7, described gland 3 is connected with base 1 by main shaft 4, one end of main shaft 4 is fixedly connected with base 1, and the other end is connected with gland nut 20 by gland 3; Between described base 1 and gland 3, be provided with 8 pull bars 11, each pull bar 11 is distributed between base 1 and gland 3 symmetrically, and adopt symmetrical assembling, the Screw assembly screw-down torque of each pull bar 11 is consistent; Detected member 2 is fixed in the inner support 7 between base 1 and gland 3, the second sealing ring 18 is provided with between detected member 2 and gland 3, between detected member 2 and base 1, be provided with the first sealing ring 14, in the inner chamber 24 of described detected member 2, be provided with the first bore seal ring 9 and the second bore seal ring 19.

In order to ensure butt-end packing, between described first sealing ring 14 end face and detected member 2, being provided with the first sealing gasket 15, between described second sealing ring 18 end face and detected member 2, being provided with the second sealing gasket 21.

In order to ensure radial seal, an O type circle 16 is provided with between described base 1 and the first sealing ring 14, between described gland 3 and the second sealing ring 18, be provided with the 2nd O type circle 13, between described inner support 7 and the first bore seal ring 9, be provided with the 3rd O type circle 17.

Described sealed nozzle assembly 6 adopts plug screw 63 compressing structure, is made up of plug screw 63, plug 62 and sealed nozzle pad 61, and described plug screw 63 compresses sealed nozzle pad 61 by plug 62, and the material of sealed nozzle pad 61 is flexible PVC.In order to seal the nozzle position of unprocessed black skin, the inclined-plane of described sealed nozzle pad 61 is consistent with the inclination angle of inclined plane of detected member 2 nozzle.

Described base seal assembly 8 adopts screw rod 82 compressing structure, is made up of base sealing gasket 83, sealing socket 84, screw rod 82 and sealing blanking cover 81; One end of described screw rod 82 compresses base sealing gasket 83 by sealing socket 84, and the other end is connected with nut by sealing blanking cover 81, and the material of base sealing gasket 83 is polyurethane.In order to realize better sealing effectiveness, the inclined-plane of described base sealing gasket 83 is consistent with the inclination angle of inclined plane of detected member 2 base, adopts sealing socket 84 to add the combined sealing structure of base sealing gasket 83.

Adopt the method for testing of described pressure reduction sealing test device, comprise the steps:

Step one: install the first bore seal ring 9 and the second bore seal ring 19 in the inner chamber 24 of detected member 2;

Step 2: install sealed nozzle assembly 6 at the nozzle place of detected member 2;

Step 3: install base seal assembly 8 at the base place of detected member 2;

Step 4: bonding first sealing gasket 15 on the first sealing ring 14 end face, is then arranged on the large end face of detected member 2 together;

Step 5: the detected member 2 after installing is arranged on base 1 by the first sealing ring 14;

Step 6: bonding second sealing gasket 21 on the second sealing ring 18 end face, is then arranged on the small end face of detected member 2 together;

Step 7: adopt symmetrical assembling mode to install 8 pull bars 11 symmetrically between base 1 and gland 3, the Screw assembly screw-down torque of each pull bar 11 is consistent;

Step 8: install gland 3, and compress detected member 2 by the gland nut 20 be connected with main shaft 4;

Step 9: the exocoel 23 to detected member 2 is suppressed, pressure to 0 ~ 2.8 MPa; Then the inner chamber 24 to detected member 2 is suppressed, and inner chamber 24 is 0 ~ 1.3 MPa with the pressure reduction of exocoel 23, keeps 8 ~ 15 minutes, welding and mounting edge place ne-leakage, suppressing rear small end mounting edge beats at 0.01mm, and verticality is Φ 0.01mm, and 4 place's right alignmenies are Φ 0.05mm; Inside and outside large end, casing is beated all within the scope of 0.01 ~ 0.03mm, and this part pressure reduction sealing test is qualified;

Step 10: release, first unloads the pressure of exocoel 23, then unloads the pressure of inner chamber 24.

Claims (10)

1. a pressure reduction sealing test device, is characterized in that comprising the sealed nozzle assembly being arranged on detected member nozzle place, the base seal assembly being arranged on detected member base place and supporting component; Described supporting component comprises base, described base is provided with inner support, above inner support, is provided with gland, and described gland is connected with base by main shaft; Several pull bars are provided with between described base and gland, detected member is fixed in the inner support between base and gland, the second sealing ring is provided with between detected member and gland, the first sealing ring is provided with between detected member and base, the inner chamber lower surface of described detected member is provided with the first bore seal ring, the inner chamber upper surface of detected member is provided with the second bore seal ring.
2. a kind of pressure reduction sealing test device according to claim 1, is characterized in that being respectively arranged with sealing gasket between described sealing ring end face and detected member.
3. a kind of pressure reduction sealing test device according to claim 1, it is characterized in that between described base and the first sealing ring, be provided with an O type circle, between described gland and the second sealing ring, be provided with the 2nd O type circle, between described inner support and the first bore seal ring, be provided with the 3rd O type circle.
4. a kind of pressure reduction sealing test device according to claim 1, it is characterized in that described sealed nozzle assembly adopts plug screw compressing structure, be made up of plug screw, plug and sealed nozzle pad, described plug screw compresses sealed nozzle pad by plug.
5. a kind of pressure reduction sealing test device according to claim 4, is characterized in that the inclined-plane of described sealed nozzle pad is consistent with the inclination angle of inclined plane of detected member nozzle.
6. a kind of pressure reduction sealing test device according to claim 1, is characterized in that described base seal assembly adopts screw-pressing structure, is made up of base sealing gasket, sealing socket, screw rod and sealing blanking cover; One end of described screw rod compresses base sealing gasket by sealing socket, and the other end is connected with nut by sealing blanking cover.
7. a kind of pressure reduction sealing test device according to claim 6, is characterized in that the inclined-plane of described sealing socket is consistent with the inclination angle of inclined plane of detected member base.
8. a kind of pressure reduction sealing test device according to claim 1, is characterized in that several pull bars described are distributed between base and gland symmetrically.
9. a kind of pressure reduction sealing test device according to claim 1, it is characterized in that several pull bars described adopt symmetrical assembling, the Screw assembly screw-down torque of each pull bar is consistent.
10. adopt the method for testing of pressure reduction sealing test device according to claim 1, it is characterized in that, comprise the steps:
Step one: install the first bore seal ring in the inner chamber lower surface of detected member, installs the second bore seal ring in the inner chamber upper surface of detected member;
Step 2: install sealed nozzle assembly at the nozzle place of detected member;
Step 3: install base seal assembly at the base place of detected member;
Step 4: bonding first sealing gasket on the first sealing ring end face, is then arranged on an end face of detected member together;
Step 5: the detected member after installing is arranged on base by the first sealing ring;
Step 6: bonding second sealing gasket on the second sealing ring end face, is then arranged on another end face of detected member together;
Step 7: install several pull bars between base and gland;
Step 8: install gland, and compress detected member by the gland nut be connected with main shaft;
Step 9: the exocoel to detected member is suppressed, the inner chamber then to detected member is suppressed, and carries out pressure reduction sealing test to detected member.
CN201210425496.8A 2012-10-31 2012-10-31 Differential-pressure sealing test device and test method thereof CN102928178B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN102928178B true CN102928178B (en) 2014-12-24

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CN104236804B (en) * 2014-09-22 2017-01-25 西安航空动力股份有限公司 Pressure test tool with function of axial deformation compensation
CN105387977B (en) * 2015-09-14 2018-09-14 沈阳航空航天大学 A kind of two chambers, three pressure plot structure for aero-engine installs side leak detection system and method
CN105319047B (en) * 2015-10-20 2018-10-26 四川成发航空科技股份有限公司 Aero-engine casing is through-flow stomata flow testing device
CN105445026B (en) * 2015-11-23 2017-11-10 成都发动机(集团)有限公司 Device for the casing diffuser hydraulic test of aeroengine combustor buring room
CN105486508B (en) * 2015-11-23 2017-12-05 成都发动机(集团)有限公司 Device for the detachable shell hydraulic test of aeroengine combustor buring room casing
CN108775990B (en) * 2018-08-14 2020-05-19 中国航发南方工业有限公司 Oil way sealing detection device and detection method for casing assembly

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