CN105547702B - A kind of engine crankcase high temperature and pressure test device - Google Patents
A kind of engine crankcase high temperature and pressure test device Download PDFInfo
- Publication number
- CN105547702B CN105547702B CN201510909048.9A CN201510909048A CN105547702B CN 105547702 B CN105547702 B CN 105547702B CN 201510909048 A CN201510909048 A CN 201510909048A CN 105547702 B CN105547702 B CN 105547702B
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- casing
- high temperature
- test device
- ring surface
- pressure test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
Abstract
The present invention relates to aviation aircraft engine environmental analogue technique field, more particularly to a kind of engine crankcase high temperature and pressure test device.Engine crankcase high temperature and pressure test device includes：Support base；Casing mounting bracket, for casing to be fixedly mounted on support base top；Pressurising mechanism, is arranged on inside casing, for controllably extruding casing；Pressure sensor, for being monitored to the air pressure in pressurising capsule；Even thermosphere, heating layer and the insulating layer being arranged between casing inner ring surface and pressurising capsule, heating layer are used to controllably heat casing；Temperature sensor, for being monitored to casing temperature.The engine crankcase high temperature and pressure test device of the present invention is by carrying out casing heat, the synchronous of power load applies, provide a kind of more close to the experimental rig of casing actual working state, heat, the mechanical property of verification casing in the operating condition can effectively be examined, load simulated precision is high, has important engineering application value.
Description
Technical field
It is high more particularly to a kind of engine crankcase the present invention relates to aviation aircraft engine environmental analogue technique field
Warm high-pressure test device.
Background technology
For aero-engine casing as the important component in engine structure, it has following important work on the engine
With：
1) it is connected before and after different casing sections, internal face collectively constitutes complete by-pass air duct air-flow wall, internal face during work
It is subject to high-temperature high-speed airflow to wash away, shape need to be kept under high-temperature and high-pressure conditions, it is ensured that engine gas flow field meets that design will
Ask；
2) the main installation frame as engine structure, surface, which is reserved with, is largely used to installation casing annex, installation section
With the opening and mounting hole of bleed air line, for an entirety will be connected as between engine each several part, structural integrity is maintained
Property.
Therefore in engine working process, to ensure the normal work of engine, casing must be in the temperature ring of work
There is enough rigidity, intensity under border, prevent deformation instability under its hot conditions.If deformation flexing occurs in casing, will destroy
The inlet flow field flow behavior and overall structure load-carrying properties of engine, trigger engine causes vibration, can make when serious whole
Shake occurs for aircraft and buckling structure destroys, and causes air crash.The complexity of these loading conditions and structural bearing so that
The design of the structural strength of casing becomes the problem of very crucial with evaluation, it is necessary to the heat under its operating condition, mechanical property
Carry out experimental study.
The Assessment for casing mainly has following three kinds at present：
1) temperature correction coefficient is used, pressure value is amplified and is corrected, pressurising glue made of rubber is used under normal temperature environment
Capsule is examined into horizontal high voltage.The method is affected by temperature less casing suitable for material property, for the material being easily affected by temperature
Material, its correction factor is difficult to determine, and result of the test and time of day deviation are larger.
2) deep fat pressurising is used.This mode is only applicable to material oil-resisting and heat-resisting, the good casing of self seal, and easily exists
Because casing deformation causes the deep fat of high temperature and pressure to leak under high pressure conditions, security is poor.
3) hot-air pressurising is used.This mode can truly simulate the use state of casing the most, but gas thermal capacitance
Low, density is low, and casing is heated to require temperature and pressure to need a large amount of high temperature airs, so that need custom-made air to compress,
Heating, recycle unit, cost are huge.
With the continuous development of aero-engine, to meet high turbine inlet temperature, big thrust loading, big bypass ratio, big stagnation pressure
Than, and the requirement such as low burn specific oil consumption, life cycle cost and environmental pollution, the structure of engine be able to will use a large amount of new
Section bar material and larger size obtain casing component.Therefore a kind of new experimental rig is needed to simulate the high temperature and pressure of casing work shape
State, to verify the design of engine crankcase.
The content of the invention
It is above-mentioned at least one to solve the object of the present invention is to provide a kind of engine crankcase high temperature and pressure test device
Technical problem.
The technical scheme is that：
A kind of engine crankcase high temperature and pressure test device, for simulating the high-temperature high-pressure work environment of casing, with to institute
The structural strength for stating casing is verified that the engine crankcase high temperature and pressure test device includes：
Horizontally disposed support base；
Casing mounting bracket, is fixedly connected with the outer ring surface of the casing, and described for the casing to be fixedly mounted on
Support base top, the axis of the casing is perpendicular to horizontal plane；
Pressurising mechanism, is arranged on inside the casing, and the pressurising mechanism has the pressurising capsule of tubular, predetermined being filled with
The outer ring surface of the pressurising capsule after amount gas matches with the casing inner ring surface shape, and the pressurising capsule is used for controlled
Ground extrudes the casing inner ring surface；
Pressure sensor, is arranged at the inflating port of the pressurising capsule, for the air pressure in the pressurising capsule into
Row monitoring；
Tubular even thermosphere, heating layer and insulating layer, be successively set on from inside to outside the casing inner ring surface with
Between the pressurising capsule outer ring surface, the heating layer is used to controllably carry out the casing inner ring surface through the even thermosphere
Heating；
Temperature sensor, is arranged between the even thermosphere and the casing inner ring surface, for the surface to the casing
Temperature is monitored.
Preferably, the casing mounting bracket includes：
Horn-like lower changeover portion, the bottom of the lower changeover portion is fixedly connected with the support base upper surface, and institute
The opening diameter for stating lower changeover portion bottom is less than the opening diameter at top；
The upper changeover portion of tubular, the opening diameter of bottom are equal to the opening diameter at the top of the lower changeover portion, the upper mistake
Section is crossed by bottom with being fixedly connected at the top of the section of the lower transition, is matched with collectively forming with the casing outer ring surface shape
Inner ring surface.
Preferably, the pressurising mechanism further includes steel cylinder, and the steel cylinder is located inside the casing and is fixed on the branch
Base upper surface is held, the pressurising capsule is set on the outer ring surface of the steel cylinder；
Limiting plate is additionally provided with the top of the steel cylinder, for limiting displacement of the pressurising capsule in vertical direction.
Preferably, the even thermosphere is sheet metal, and thickness is not more than 0.5mm, and the machine is fixed on by high temperature gummed tape
On casket inner ring surface.
Preferably, the heating layer is the heating tape with resistance wire, and heating power is not less than 1W/cm2。
Preferably, the insulating layer by the first flexible insulant material layer, layer of metal foil, the second flexible insulant material layer with
And rubber slab flexible insulant material layer is laid with suture composition successively from inside to outside.
Preferably, the first flexible insulant material layer and the second flexible insulant material layer using fibrage every
Hot material.
Preferably, the sheet metal of the layer of metal foil is not more than 0.5mm for thickness.
Preferably, the rubber slab is not less than 250 DEG C of silicon rubber or fluorubber for heatproof.
The advantage of the invention is that：
The engine crankcase high temperature and pressure test device of the present invention is by carrying out casing heat, the synchronous of power load applies,
Provide a kind of more close to the experimental rig of casing actual working state, can effectively examine verification casing in the operating condition
Heat, mechanical property, load simulated precision is high, has important engineering application value.
Brief description of the drawings
Fig. 1 is the structure sectional view of inventive engine casing high temperature and pressure test device；
Fig. 2 is the enlarged diagram of part A in Fig. 1 of the present invention；
Fig. 3 is the structure sectional view of pressurising mechanism in inventive engine casing high temperature and pressure test device.
Embodiment
To make the purpose, technical scheme and advantage that the present invention is implemented clearer, below in conjunction with the embodiment of the present invention
Attached drawing, the technical solution in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from beginning to end or class
As label represent same or similar element or there is same or like element.Described embodiment is the present invention
Part of the embodiment, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to uses
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without creative efforts, belong to the scope of protection of the invention.
In the description of the present 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 ", " outer " is based on attached drawing institutes
The orientation or position relationship shown, is for only for ease of the description present invention and simplifies description, rather than instruction or the dress for implying meaning
Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the present invention is protected
The limitation of scope.
1 to Fig. 3 inventive engine casing high temperature and pressure test device is described in further details below in conjunction with the accompanying drawings.
The present invention provides a kind of engine crankcase high temperature and pressure test device, for simulating the high temperature and pressure work of casing 1
Make environment, verified with the structural strength to casing 1.Engine crankcase high temperature and pressure test device includes supporting base 2, machine
Casket mounting bracket 3, pressurising mechanism 4 and heating layer 62 etc..
On the supporting surface (such as ground) for supporting 2 generally horizontal setting of base, it can be arranged as required to be adapted to be a variety of
Shape.
Casing mounting bracket 3, which is mainly used for casing 1 being fixedly mounted on, supports the top of base 2.Casing mounting bracket 3 has and machine
The inner ring surface that the outer ring surface of casket 1 matches, is engaged with the outer ring surface of casing 1 by the inner ring surface so as to by 1 company of fixation of casing
Connect, the axis of the casing 1 in installment state is perpendicular to horizontal plane；In addition, the bottom of casing mounting bracket 3 passes through bolt or welding
Etc. mode with being fixedly connected at the top of support base 2, fixed so as to fulfill by casing 1.
The casing mounting bracket 3 of the present invention can be shaped to a variety of suitable shapes according to casing 1；The present embodiment
In, casing mounting bracket 3 can include lower changeover portion 32 and upper changeover portion 31.Lower changeover portion 32 in horn-like, lower changeover portion 32
Bottom is with supporting 2 upper surface of base to be fixedly connected, and the opening diameter of 32 bottom of lower changeover portion is less than the opening diameter at top；On
Changeover portion 31 is cylindrical in shape, and the opening diameter of bottom is equal to the opening diameter at the lower top of changeover portion 32, and upper changeover portion 31 passes through bottom
It is fixedly connected with the top of lower changeover portion 32 by modes such as bolt or welding, to collectively form and 1 outer ring surface shape phase of casing
Matched inner ring surface.It should be noted that the shape of most of casing 1 is not the cylindrical shape of rule, and it is analogous to during figure regards
Lower part is in horn-like, therefore installation is fixed for convenience, and casing mounting bracket 3 is divided for upper changeover portion 31 and lower changeover portion
32；During installation, casing 1 is installed on by lower changeover portion 32 supports on base 2 first, and the upper end of lower changeover portion 32 reconnected
Cross section 31.
Pressurising mechanism 4 is arranged on inside casing 1, is mainly used for casing 1 and is applied pressure loading；Pressurising mechanism 4 has tubular
Pressurising capsule 41, outer ring surface and the 1 inner ring surface shape of casing of the pressurising capsule 41 after scheduled volume gas is filled with match, fill
Moulding capsule 41 is used to controllably extrude 1 inner ring surface of casing.Wherein, since pressurising capsule 41 is deformable body, it is filled with gas
Amount number shape can be impacted；Scheduled volume gas described in the present embodiment, refers to after being filled with the scheduled volume gas,
Just so that the outer ring surface of pressurising capsule 41 matches with 1 inner ring surface shape of casing, pressurising capsule 41 can be caused to be pasted with casing 1
Conjunction is more complete, applies pressure evenly；When being further continued for being filled with gas, you can 1 inner ring surface of casing is extruded.
Further, pressurising pump (not shown) and pressure sensor 5 is provided with the inflating port 42 of pressurising capsule 41, for pair
Air pressure in pressurising capsule 41 is monitored, so as to according to pressure value automatic or manual to the aeration quantity of pressurising capsule 41 into
Row controls, and preferably pressurising pump output pressure is automatically controlled according to pressure sensor 5 by control computer in the present embodiment, so that
Control pressurising capsule pressure.
Equally, pressurising mechanism 4 can need to be arranged to a variety of suitable shapes according to casing 1；In the present embodiment, pressurising machine
Structure 4 further includes steel cylinder 43, and steel cylinder 43, which is located at the inside of casing 1 and is fixed on, supports 2 upper surface of base, and pressurising capsule 41 is set on
On the outer ring surface of steel cylinder 43；In addition, limiting plate 44 is additionally provided with the top of steel cylinder 43, for limiting pressurising capsule 41 vertical
The displacement in direction so that pressurising capsule 41 mainly deforms extruding towards 1 direction of casing in gas replenishment process.
Further, engine crankcase high temperature and pressure test device of the invention further includes tubular even thermosphere 61, adds
Thermosphere 62 and insulating layer 63, are successively set between 41 outer ring surface of 1 inner ring surface of casing and pressurising capsule from inside to outside；Wherein,
Heating layer 62 is used to controllably heat 1 inner ring surface of casing through even thermosphere 61；In addition, in even thermosphere 61 and casing 1
Temperature sensor 7 is provided between anchor ring, for being monitored to the surface temperature of casing 1.
Equally, in the present invention, can according to temperature sensor 7 monitor temperature value automatic or manual to heating layer 62 into
Row control；In the present embodiment, heating layer 62 is powered by power supply, the temperature value that control computer is monitored according to temperature sensor 7 from
Dynamic control power supply output power, so as to control 62 heating-up temperature of heating layer.
In the engine crankcase high temperature and pressure test device of the present invention, even thermosphere 61, heating layer 62 and insulating layer 63
Concrete structure can carry out suitable selection as needed.In the present embodiment, even thermosphere 61 is sheet metal, and thickness is not more than
0.5mm, can be fixed on 1 inner ring surface of casing with soft conformable on 1 surface of casing by high temperature gummed tape.Heating layer 62 is glass
Silk cloth Resistant heating band, can be not less than 1W/cm with soft conformable in 1 surface of casing, heating power2, and pass through high temperature gummed tape
It is fixed.
Insulating layer 63 is by can be with the first flexible insulant material layer, layer of metal foil, the second flexible insulant material layer and rubber
Offset plate flexible insulant material layer is laid with suture composition successively from inside to outside.Wherein, the first flexible insulant material layer and the second flexibility
Insulation material layer uses fibrage heat-barrier material, for reducing heat conduction；Sheet metal is thickness no more than 0.5mm's
High heat conductivity metal material, for soaking, avoids local temperature excessive；Rubber slab for heatproof not less than 250 DEG C silicon rubber or
Fluorubber, using its thermal capacitance it is big the characteristics of, absorb heat, reduce temperature rise amplitude.
The engine crankcase high temperature and pressure test device of the present invention is by carrying out casing heat, the synchronous of power load applies,
Provide a kind of more close to the experimental rig of casing actual working state, can effectively examine verification casing in the operating condition
Heat, mechanical property, load simulated precision is high, has important engineering application value；In addition, material therefor number of devices of the present invention
Few, cost is low, and reliability is high；Further, the present invention is not related to high-temperature gas or liquid, and security is good.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should using the scope of the claims as
It is accurate.
Claims (9)
- A kind of 1. engine crankcase high temperature and pressure test device, for simulating the high-temperature high-pressure work environment of casing (1), with to institute The structural strength for stating casing (1) is verified, it is characterised in that the engine crankcase high temperature and pressure test device includes：Horizontally disposed support base (2)；Casing mounting bracket (3), is fixedly connected with the outer ring surface of the casing (1), and for the casing (1) to be fixedly mounted on At the top of the support base (2), the axis of the casing (1) is perpendicular to horizontal plane；Pressurising mechanism (4), is arranged on the casing (1) inside, and the pressurising mechanism (4) has the pressurising capsule (41) of tubular, The outer ring surface of the pressurising capsule (41) after scheduled volume gas is filled with matches with the casing (1) inner ring surface shape, institute Pressurising capsule (41) is stated to be used to controllably extrude the casing (1) inner ring surface；Pressure sensor (5), is arranged on inflating port (42) place of the pressurising capsule (41), for the pressurising capsule (41) In air pressure be monitored；Tubular even thermosphere (61), heating layer (62) and insulating layer (63), are successively set on the casing from inside to outside (1) between inner ring surface and the pressurising capsule (41) outer ring surface, the heating layer (62) is used to controllably pass through the even thermosphere (61) casing (1) inner ring surface is heated；Temperature sensor (7), is arranged between the even thermosphere (61) and the casing (1) inner ring surface, for the casing (1) surface temperature is monitored.
- 2. engine crankcase high temperature and pressure test device according to claim 1, it is characterised in that the casing mounting bracket (3) include：Horn-like lower changeover portion (32), the bottom of the lower changeover portion (32) is fixed with described support base (2) upper surface to be connected Connect, and the opening diameter of the lower changeover portion (32) bottom is less than the opening diameter at top；The upper changeover portion (31) of tubular, the opening diameter of bottom is equal to the opening diameter at the top of the lower changeover portion (32), described Upper changeover portion (31) by bottom with being fixedly connected at the top of the lower changeover portion (32), to collectively form and the casing (1) The inner ring surface that outer ring surface shape matches.
- 3. engine crankcase high temperature and pressure test device according to claim 1, it is characterised in that the pressurising mechanism (4) steel cylinder (43) is further included, the steel cylinder (43) is located at the casing (1) inside and is fixed on described support base (2) upper table Face, the pressurising capsule (41) are set on the outer ring surface of the steel cylinder (43)；Limiting plate (44) is additionally provided with the top of the steel cylinder (43), for limiting the pressurising capsule (41) in vertical direction Displacement.
- 4. engine crankcase high temperature and pressure test device according to claim 1, it is characterised in that the even thermosphere (61) For sheet metal, thickness is not more than 0.5mm, is fixed on by high temperature gummed tape on the casing (1) inner ring surface.
- 5. engine crankcase high temperature and pressure test device according to claim 4, it is characterised in that the heating layer (62) For the heating tape with resistance wire, heating power is not less than 1W/cm2。
- 6. engine crankcase high temperature and pressure test device according to claim 5, it is characterised in that the insulating layer (63) By the first flexible insulant material layer, layer of metal foil, the second flexible insulant material layer and rubber slab flexible insulant material layer by It is laid with suture composition successively from inside to outside.
- 7. engine crankcase high temperature and pressure test device according to claim 6, it is characterised in that described first it is flexible every Hot material layer and the second flexible insulant material layer use fibrage heat-barrier material.
- 8. engine crankcase high temperature and pressure test device according to claim 6, it is characterised in that the layer of metal foil Sheet metal be not more than 0.5mm for thickness.
- 9. engine crankcase high temperature and pressure test device according to claim 6, it is characterised in that the rubber slab is resistance to Temperature is not less than 250 DEG C of silicon rubber or fluorubber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510909048.9A CN105547702B (en) | 2015-12-10 | 2015-12-10 | A kind of engine crankcase high temperature and pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909048.9A CN105547702B (en) | 2015-12-10 | 2015-12-10 | A kind of engine crankcase high temperature and pressure test device |
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| Publication Number | Publication Date |
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| CN105547702A CN105547702A (en) | 2016-05-04 |
| CN105547702B true CN105547702B (en) | 2018-04-13 |
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| CN107063695A (en) * | 2017-04-26 | 2017-08-18 | 中国燃气涡轮研究院 | A kind of aeroengine combustor buring room water-cooled casing reinforcement structure |
| CN108918147A (en) * | 2018-06-21 | 2018-11-30 | 南京航空航天大学 | It is a kind of bilayer targeting testing device and hot environment test method |
| CN110361195B (en) * | 2019-07-19 | 2021-03-12 | 中国航发沈阳发动机研究所 | Experimental high-temperature chamber analogue means of annex machine casket |
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| CN112985787B (en) * | 2021-02-01 | 2022-10-28 | 中国航发沈阳发动机研究所 | Card installing mechanism for high-temperature test of case |
| CN113776950A (en) * | 2021-08-16 | 2021-12-10 | 中国航发贵阳发动机设计研究所 | Water bag structure for pressure test of special-shaped casing and mounting method thereof |
| CN113984361B (en) * | 2021-10-26 | 2024-04-16 | 中国航发沈阳发动机研究所 | Engine casing internal pressure test device |
| CN113899554B (en) * | 2021-12-10 | 2022-02-18 | 中国飞机强度研究所 | Balance control method for slow-vehicle running environment field of laboratory aircraft engine |
| CN113959860A (en) * | 2021-12-20 | 2022-01-21 | 天津航天瑞莱科技有限公司 | Thermal internal pressure test system for casing piece in pneumatic-hydraulic loading mode |
| CN117554083B (en) * | 2024-01-11 | 2024-04-12 | 天津航天瑞莱科技有限公司 | Method for loading system by adopting engine casing thermal internal pressure fatigue test |
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