CN106525617A - Pressurizing fatigue test device for large-capacity cavity or semi-enclosed cavity - Google Patents
Pressurizing fatigue test device for large-capacity cavity or semi-enclosed cavity Download PDFInfo
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- CN106525617A CN106525617A CN201611079875.0A CN201611079875A CN106525617A CN 106525617 A CN106525617 A CN 106525617A CN 201611079875 A CN201611079875 A CN 201611079875A CN 106525617 A CN106525617 A CN 106525617A
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- 238000009661 fatigue test Methods 0.000 title abstract description 7
- 238000005259 measurement Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 abstract description 12
- 238000009530 blood pressure measurement Methods 0.000 abstract description 10
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 10
- 238000012360 testing method Methods 0.000 description 14
- 238000005273 aeration Methods 0.000 description 6
- 238000007872 degassing Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
- G01N2203/0046—Vacuum
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0232—High pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
- G01N2203/0234—Low pressure; Vacuum
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a pressurizing fatigue test device. The pressurizing fatigue test device comprises a computer, an air compressor, a dual-channel measuring system, a dual-path gas charging-discharging control system and a vacuum system, wherein the front end of the dual-path gas charging-discharging control system is connected with the air compressor; the rear end of the dual-path gas charging-discharging control system is connected with the vacuum system; the dual-channel measuring system comprises dual channels formed by a pressure measuring point A, a pressure sensor A, a computer and a pressure measuring point B, a pressure sensor B and a computer; the dual-path gas charging-discharging system comprises a control loop A formed by an air compressor, a gas charging pipeline A, a pneumatic control valve A, a gas charging-discharging nozzle A, a gas discharging pipeline A and a vacuum system, and a control loop B formed by an air compressor, a gas charging pipeline B, a pneumatic control valve B, a gas charging-discharging nozzle B, a gas discharging pipeline B and a vacuum system. By adopting the pressurizing fatigue test device, the gas charging-discharging efficiency is increased, pressure measurement and the gas charging-discharging nozzles are distributed optimally, the pressure measuring accuracy is increased, and the turbulence degree of gas flow in a gas charging process is lowered; a dual-effect control mode is applied, so that the accuracy and security are improved greatly.
Description
Technical field
The invention belongs to pressurising fatigue test technology field, and in particular to a kind of big volume chamber or aircraft portable cover,
The pressurising fatigue experimental device of the semi-enclosed cavities such as frame sections, wallboard.
Background technology
Existing pressurising fatigue test system, generally using the pressurising form of slow test：One control centre's computer,
One single-point control sub-station, a pressure transducer and small-bore tubing road（φ 10～φ 20mm）.During loading, control centre sends
Inflation instruction, opens Pneumatic valve air inlet, is loaded by little internal diameter single channel, and pressure value is fed back to control centre；Pressure
After value reaches setting value, control centre sends pressure release instruction, opens Pneumatic valve gas vent and adopts nature air bleeding mode（Directly arrange
It is put in atmospheric environment）Carry out single channel pressure release.This scheme is applied to that aeration quantity is little, space-closed little cavity pressurising test,
Have the following disadvantages for big volume or semi-enclosed cavity：
1) little internal diameter single channel loading, in the unit interval, aeration quantity is few first, i.e., inflation rate is low, furthermore faces semi-enclosed cavity
During gas leakage, air leakage amount and air compensation do not reach equilibrium state, or even air compensation is less than air leakage amount, lead to not continue inflation, enter
And pressure is unable to maintain that lifting；
2) release of single channel natural pressure, is to carry out pressure release by external and internal pressure difference, when increasing with deflation time, pressure differential with
Diminish, cause outgassing rate to be gradually lowered, and then have that pressure release speed is low, venting duration is long.
3) single-point pressure measurement form faces inflation turbulent flow and gas flowing non-directional feature, and institute's measuring pressure deviation is larger；
4) once the failure of single channel control model pressure transducer or failure, pilot system are out of hand.
The content of the invention
To be solved by this invention is that existing pressurising fatigue experimental device loading speed is low, measurement error is big and only faces
A kind of technical problems such as enclosed construction testpieces, there is provided the pressurising fatigue experimental device of big volume chamber or semi-enclosed cavity, it is real
Existing quick inflation/deflation, semi-enclosed cavity（I.e. semi-closed structure and tooling combination into cavity, have parting surface）Micro- gas leakage, has
Economic benefits and social benefits control model, greatly improves test pressure certainty of measurement.
In order to solve the technical problem of the present invention, the present invention is achieved by the following technical solutions：A kind of big cavity volume
The pressurising fatigue experimental device of body or semi-enclosed cavity, including computer 1, air compressor machine 2, two-channel measurement system, two-way charge and discharge
Gas control system and vacuum system.The computer 1 is connected with testpieces 3 by two-channel measurement system, the two-way charge and discharge
Gas control system front end is connected with air compressor machine 2, and rear end is connected with vacuum system, and the air compressor machine 2 is controlled by two-way inflation/deflation
System carries out inflation/deflation to testpieces 3.
The two-channel measurement system includes the pressure tap A4 being arranged on testpieces 3 and pressure tap B5, pressure transducer
A6, pressure transducer B7, the pressure transducer A6 are connected to form A channel with computer 1 on pressure tap A4, described
Pressure transducer B7 is connected to form channel B with computer 1 on pressure tap B5.
The two-way inflation/deflation control system include Pneumatic valve A8, Pneumatic valve B9, loading line A10, loading line B11,
Blowdown piping A12, blowdown piping B13, charge and discharge valve A14, charge and discharge valve B15, the charge and discharge valve A14, charge and discharge valve B15 set
Put on the testpieces 3, the Pneumatic valve A8 and Pneumatic valve B9 are connected with computer 1 respectively；The air compressor machine 2 is passed sequentially through
Loading line A10, Pneumatic valve A8 are connected respectively on the charge and discharge valve A14 and blowdown piping A12 on testpieces 3, form charge and discharge
Gas control loop A；The air compressor machine 2 passes sequentially through loading line B11, Pneumatic valve B9 and is connected respectively to the charge and discharge on testpieces 3
On valve B15 and blowdown piping B13, inflation/deflation control loop B is formed.Using two-way inflation/deflation control system, realize that two-way is same
When inflation/deflation, improve the gas flow in the unit interval, improve inflation/deflation speed.Leak when testing for semi-closed structure pressurising
A gas difficult problem, two-way inflation increase the aeration quantity in the unit interval, have ensured that the gas of testpieces intracavity continues to increase, and are easy to maintain
The enforcement of pressure-loaded.
The vacuum system includes vacuum tank 16, vacuum degree control instrument 17 and vacuum pump 18, the vacuum tank 16 successively with
Vacuum degree control instrument 17 and vacuum pump 18 connect, and the vacuum pump 18 and vacuum degree control instrument 17 are used for guaranteeing vacuum tank 16 whole
Keep certain vacuum in individual process of the test in real time.The blowdown piping A12 and blowdown piping B13 are connected with vacuum tank 16,
Vacuum tank 16 is connected to the gas vent of Pneumatic valve by blowdown piping, utilizes " pressure differential " principle, defines nature and deflates to " master
The patten transformation of dynamic air-breathing ", further improves deflation efficiency, solves the problems, such as long-time, high-frequency Rapid degassing.
Preferably, the pressure tap A4 and pressure tap B5 is dispersed placement, because gas has not in 3 internal flow of testpieces
Directionality and heteropical feature, by dispersed placement, can collect the gas pressure under different conditions, further increase
The accuracy of pressure measurement.
Preferably, the charge and discharge valve A14 and charge and discharge valve B15 be dispersed placement, the pressure tap A4 and pressure tap B5
Away from charge and discharge valve A14 and charge and discharge valve B15.Filled by pressure tap, the dispersed placement of charge and discharge valve, and pressure tap " away from "
Deflating valve, it is to avoid because of the disorderly air-flow that instantaneous inflation/deflation is produced so that pressure is unstable in charge and discharge valve environs, enter
And bring larger measurement error, that is, pressure measurement accuracy is not only increased, and reduces gas flowing in gas replenishment process
Turbulence.
Compared with prior art, the beneficial effect of present invention acquisition is：
A kind of big volume chamber or the pressurising fatigue experimental device of semi-enclosed cavity that the present invention is provided, using active inspiration mould
Vacuum tank, by vacuum pump so that vacuum tank is in vacuum state, is then connected to putting for Pneumatic valve by blowdown piping by formula
QI KOU, finally utilizes " pressure differential " principle, defines nature and deflate to " active inspiration " patten transformation, further improve deflation
Efficiency, solves the problems, such as long-time, high-frequency Rapid degassing.
A kind of big volume chamber or the pressurising fatigue experimental device of semi-enclosed cavity that the present invention is provided, using two-way charge and discharge
Gas control system, and with reference to the application of active inspiration pattern, further increase inflation/deflation speed, while increase aeration quantity, can be with
The situation of the micro- gas leakage of big volume semi-enclosed cavity pressurising, i.e. aeration quantity are tackled much larger than air leakage amount, is easy to maintain pressure-loaded
Implement.
The present invention provide a kind of big volume chamber or semi-enclosed cavity pressurising fatigue experimental device, using pressure measurement with fill
The preferred arrangement of deflating valve, by by 2 pressure tap dispersed placement, and " away from " charge and discharge valve, it is to avoid because of instantaneous charge and discharge
The disorderly air-flow that gas is produced so that pressure is unstable in charge and discharge valve environs, and then brings larger measurement error, i.e.,
Reduce the turbulence of gas flowing in gas replenishment process；The dispersed placement of pressure tap, because gas has in testpieces internal flow
Non-directiveness and heteropical feature, by distributed collection, that is, choose two corners of testpieces and arrange measurement point, can collect
Gas pressure under different conditions, further increases the accuracy of pressure measurement.
A kind of big volume chamber or the pressurising fatigue experimental device of semi-enclosed cavity that the present invention is provided, using economic benefits and social benefits control
Pattern, i.e., the pattern for being combined using dual pathways pressure-measuring system and the control of two-way inflation/deflation, is connected by two sensors
To the method for two data acquisition channels, the accuracy of DATA REASONING is improve by correction data, it is particularly efficient to prevent from passing
The test failure risk brought by sensor or data acquisition channel trouble or failure；Meanwhile, by two Pneumatic valves and two-way charge and discharge
Air circuit combines, and not only increases inflation/deflation efficiency, and prevents the test brought by gas control defective valve from stopping.Economic benefits and social benefits are controlled
Pattern not only causes tonometric degree of accuracy and inflation/deflation control effectiveness etc. to greatly reinforce, and avoids in process of the test
It is middle because of failure or the failure of pressure transducer or Pneumatic valve, cause the generation of the out of control phenomenon of assay device, substantially reduce
Test danger coefficient, improves safety.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Reference：1st, computer；2nd, air compressor machine；3rd, testpieces；4th, pressure tap A；5th, pressure tap B；6th, pressure transducer
A；7th, pressure transducer B；8th, Pneumatic valve A；9th, Pneumatic valve B；10th, loading line A；11st, loading line B；12nd, blowdown piping A；
13rd, blowdown piping B；14th, charge and discharge valve A；15th, charge and discharge valve B；16th, vacuum tank；17th, vacuum degree control instrument；18th, vacuum pump.
Specific embodiment
Below in conjunction with the accompanying drawings, embodiment is described in detail.
Referring to accompanying drawing 1, the pressurising fatigue experimental device of a kind of big volume chamber or semi-enclosed cavity, including computer 1, sky
Press 2, two-channel measurement system, two-way inflation/deflation control system and vacuum system.The computer 1 passes through two pass bands system
System is connected with testpieces 3, and the two-way inflation/deflation control system front end is connected with air compressor machine 2, and rear end is connected with vacuum system, institute
Stating air compressor machine 2 carries out inflation/deflation by two-way inflation/deflation control system to testpieces 3.
The two-channel measurement system includes the pressure tap A4 being arranged on testpieces 3 and pressure tap B5, pressure transducer
A6, pressure transducer B7, the pressure transducer A6 are connected to form A channel with computer 1 on pressure tap A4, described
Pressure transducer B7 is connected to form channel B with computer 1 on pressure tap B5.
The two-way inflation/deflation control system include Pneumatic valve A8, Pneumatic valve B9, loading line A10, loading line B11,
Blowdown piping A12, blowdown piping B13, charge and discharge valve A14, charge and discharge valve B15, the charge and discharge valve A14, charge and discharge valve B15 set
Put on the testpieces 3, the Pneumatic valve A8 and Pneumatic valve B9 are connected with computer 1 respectively；The air compressor machine 2 is passed sequentially through
Loading line A10, Pneumatic valve A8 are connected respectively on the charge and discharge valve A14 and blowdown piping A12 on testpieces 3, form charge and discharge
Gas control loop A；The air compressor machine 2 passes sequentially through loading line B11, Pneumatic valve B9 and is connected respectively to the charge and discharge on testpieces 3
On valve B15 and blowdown piping B13, inflation/deflation control loop B is formed.Using two-way inflation/deflation control system, realize that two-way is same
When inflation/deflation, improve the gas flow in the unit interval, improve inflation/deflation speed.Leak when testing for semi-closed structure pressurising
A gas difficult problem, two-way inflation increase the aeration quantity in the unit interval, have ensured that the gas of 3 intracavity of testpieces continues to increase, and are easy to dimension
Hold the enforcement of pressure-loaded.
The vacuum system includes vacuum tank 16, vacuum degree control instrument 17 and vacuum pump 18, the vacuum tank 16 successively with
Vacuum degree control instrument 17 and vacuum pump 18 connect, and the vacuum pump 18 and vacuum degree control instrument 17 are used for guaranteeing vacuum tank 16 whole
Keep certain vacuum in individual process of the test in real time.The blowdown piping A12 and blowdown piping B13 are connected with vacuum tank 16,
Vacuum tank 16 is connected to the gas vent of Pneumatic valve by blowdown piping, utilizes " pressure differential " principle, defines nature and deflates to " master
The patten transformation of dynamic air-breathing ", further improves deflation efficiency, solves the problems, such as long-time, high-frequency Rapid degassing.
Preferably, the pressure tap A4 and pressure tap B5 is dispersed placement, because gas has not in 3 internal flow of testpieces
Directionality and heteropical feature, by dispersed placement, can collect the gas pressure under different conditions, further increase
The accuracy of pressure measurement.
Preferably, the charge and discharge valve A14 and charge and discharge valve B15 be dispersed placement, the pressure tap A4 and pressure tap B5
Away from charge and discharge valve A14 and charge and discharge valve B15.Filled by pressure tap, the dispersed placement of charge and discharge valve, and pressure tap " away from "
Deflating valve, it is to avoid because of the disorderly air-flow that instantaneous inflation/deflation is produced so that pressure is unstable in charge and discharge valve environs, enter
And bring larger measurement error, that is, pressure measurement accuracy is not only increased, and reduces gas flowing in gas replenishment process
Turbulence.
Start air compressor machine 2, computer 1 sends inflation instruction to Pneumatic valve A8 and Pneumatic valve B9, Pneumatic valve A8 and Pneumatic valve
B9 is synchronous immediately after being connected to instruction to open inflation valve port so that the gas of the output of air compressor machine 2 is simultaneously via two inflation loops：Fill
Air pipe A10- Pneumatic valve A8- charge and discharge valve A14 and loading line B11- Pneumatic valve B9- charge and discharge valve B15, enter to testpieces 3
Row inflation.In gas replenishment process, pressure tap A4 and pressure tap B5 of the scattered resettlement in two corners pass through pressure transducer A6 respectively
With pressure transducer B7, by the pressure data synchronous feedback for collecting to computer 1, computer 1 carries out feedback pressure number immediately
According to director data relative analyses and process.When the pressure measurement data of two passages reaches director data value size, meter
Calculation machine 1 sends deflation instruction to Pneumatic valve A8 and Pneumatic valve B9.Pneumatic valve A8 and Pneumatic valve B9 switch to deflation after being connected to instruction
Valve port, the gas of 3 inner chamber of testpieces is synchronous respectively to pass through two deflation loops：Charge and discharge valve A14- Pneumatic valve A8- blowdown pipings
Gas is emitted into vacuum tank 16 by A12 and charge and discharge valve B15- Pneumatic valve B9- blowdown piping B13.Pressure in testpieces 3
When reaching preset pressure lower limit, system operating mode back switches to modes of inflation, is worked with this step iterative cycles, to test
Part 3 ceaselessly carries out pressurising fatigue test.
Vacuum in 17 real-time monitoring vacuum tank 16 of vacuum degree control instrument, when the vacuum in vacuum tank 16 reaches vacuum
Set by degree controller 17 during the upper limit of threshold value, vacuum pump 18 starts work, to 16 evacuation of vacuum tank, until in vacuum tank 16
When vacuum reaches the lower limit of set threshold value, vacuum pump 18 quits work.By that analogy, circulate work.
A kind of big volume chamber or the pressurising fatigue experimental device of semi-enclosed cavity that the present invention is provided, improve inflation/deflation
Efficiency, meanwhile, with reference to active inspiration pattern, deflation efficiency and frequency is further improved, the semiclosed chamber of big volume can be tackled
The situation of body pressurising gas leakage, is easy to maintain the enforcement of pressure-loaded；Pressure measurement and the preferred arrangement of inflation/deflation, improve pressure measxurement
Degree of accuracy, meanwhile, reduce the turbulence of gas flowing in gas replenishment process；The application of economic benefits and social benefits control model, not only so that pressure
The degree of accuracy of power measurement and inflation/deflation control effectiveness etc. are greatly reinforced, and are avoided in process of the test because of pressure transducer
Or failure or the failure of Pneumatic valve, cause the out of control phenomenon of pilot system to occur, substantially reduce test danger coefficient.
Listed above is only one of specific embodiment of the present invention.It is clear that the invention is not restricted to above example, may be used also
To there is many similar reshapings.One of ordinary skill in the art can directly derive from present disclosure or associate
All deformations, are considered as invention which is intended to be protected.
Claims (3)
1. the pressurising fatigue experimental device of big volume chamber or semi-enclosed cavity, it is characterised in that：Including computer（1）, pneumatics
Machine（2）, two-channel measurement system, two-way inflation/deflation control system and vacuum system, it is characterised in that：The computer（1）It is logical
Cross two-channel measurement system and testpieces（3）Connection, the two-way inflation/deflation control system front end and air compressor machine（2）It is connected, after
End is connected with vacuum system；The two-channel measurement system includes being arranged on testpieces（3）On pressure tap A（4）With pressure tap B
（5）, pressure transducer A（6）, pressure transducer B（7）, the pressure transducer A（6）Installed in pressure tap A（4）On, with calculating
Machine（1）It is connected to form A channel, the pressure transducer B（7）Installed in pressure tap B（5）On, with computer（1）It is connected to form B
Passage；The two-way inflation/deflation control system includes Pneumatic valve A（8）, Pneumatic valve B（9）, loading line A（10）, loading line B
（11）, blowdown piping A（12）, blowdown piping B（13）, charge and discharge valve A（14）, charge and discharge valve B（15）, the charge and discharge valve A
（14）, charge and discharge valve B（15）It is arranged on the testpieces（3）On, the Pneumatic valve A（8）With Pneumatic valve B（9）Respectively with calculating
Machine（1）Connection；The air compressor machine（2）Pass sequentially through loading line A（10）, Pneumatic valve A（8）It is connected respectively to testpieces（3）On
Charge and discharge valve A（14）With blowdown piping A（12）On, form inflation/deflation control loop A；The air compressor machine（2）Pass sequentially through and fill
Air pipe B（11）, Pneumatic valve B（9）It is connected respectively to testpieces（3）On charge and discharge valve B（15）With blowdown piping B（13）On,
Form inflation/deflation control loop B；The vacuum system includes vacuum tank（16）, vacuum degree control instrument（17）And vacuum pump（18）,
The vacuum tank（16）Successively with vacuum degree control instrument（17）And vacuum pump（18）Connection；The blowdown piping A（12）And deflation
Pipeline B（13）With vacuum tank（16）Connection.
2. the pressurising fatigue experimental device of volume chamber as claimed in claim 1 big or semi-enclosed cavity, it is characterised in that：Institute
State pressure tap A（4）With pressure tap B（5）For dispersed placement.
3. the pressurising fatigue experimental device of volume chamber as claimed in claim 1 big or semi-enclosed cavity, it is characterised in that：Institute
State charge and discharge valve A（14）With charge and discharge valve B（15）For dispersed placement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611079875.0A CN106525617A (en) | 2016-11-30 | 2016-11-30 | Pressurizing fatigue test device for large-capacity cavity or semi-enclosed cavity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611079875.0A CN106525617A (en) | 2016-11-30 | 2016-11-30 | Pressurizing fatigue test device for large-capacity cavity or semi-enclosed cavity |
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| CN106525617A true CN106525617A (en) | 2017-03-22 |
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| CN201611079875.0A Pending CN106525617A (en) | 2016-11-30 | 2016-11-30 | Pressurizing fatigue test device for large-capacity cavity or semi-enclosed cavity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401534A (en) * | 2017-07-13 | 2017-11-28 | 江西洪都航空工业集团有限责任公司 | With the load combined fatigue experimental device of pressurized strut heat of normal temperature fluid driving |
| CN111003202A (en) * | 2019-12-04 | 2020-04-14 | 江西洪都航空工业集团有限责任公司 | Cabin cover inflation and deflation loading test system and using method |
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| CN107401534B (en) * | 2017-07-13 | 2019-03-01 | 江西洪都航空工业集团有限责任公司 | With the load combined fatigue experimental device of pressurized strut heat of room temperature oil liquid driving |
| CN111003202A (en) * | 2019-12-04 | 2020-04-14 | 江西洪都航空工业集团有限责任公司 | Cabin cover inflation and deflation loading test system and using method |
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