CN107063615B - A kind of single gravel erosion combustion gas big gun experimental rig - Google Patents
A kind of single gravel erosion combustion gas big gun experimental rig Download PDFInfo
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- CN107063615B CN107063615B CN201710085058.4A CN201710085058A CN107063615B CN 107063615 B CN107063615 B CN 107063615B CN 201710085058 A CN201710085058 A CN 201710085058A CN 107063615 B CN107063615 B CN 107063615B
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- gas
- pressure
- experimental rig
- elastic balloon
- bullet
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- 239000000567 combustion gas Substances 0.000 title claims abstract description 25
- 230000003628 erosive effect Effects 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 68
- 238000002347 injection Methods 0.000 claims abstract description 39
- 239000007924 injection Substances 0.000 claims abstract description 39
- 238000005474 detonation Methods 0.000 claims abstract description 12
- 230000035939 shock Effects 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000002737 fuel gas Substances 0.000 claims abstract description 4
- 238000013519 translation Methods 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000002775 capsule Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000003556 assay Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000009863 impact test Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of test field of aircraft engine blade gravel impact, especially single gravel erosion combustion gas big gun experimental rig, including gas chamber, elastic balloon, gun tube, gas injection ignition system；The gas injection ignition system includes the air injection pipe for being connected to elastic balloon, the fuel gas inlet and air intlet, the electric plug for igniting, pressure sensor, controller for detecting pressure in elastic balloon for being connected to air injection pipe；Wherein pressure signal of the controller to receive pressure sensor transmission and the opening and closing to control electric plug enabling and throttle valve.The experimental rig can control the basic energy of Detonation Shock Wave by the ratio of the combustion gas of injection and air Mixture, pressure, pass through the pressure of counter balance pocket calibration and fine-tuned emission bullet to pre-set velocity, since the instantaneous pressure that Detonation Shock Wave generates is enough the supersonic speed for being promoted to bullet greater than 400m/s, the gravel speed needed in leaf assay can be realized by simple structure by the present invention.
Description
Technical field
The present invention relates to vehicle technologies to test field, especially a kind of aircraft engine blade high speed impact test dress
It sets.
Background technique
Currently, helicopter engine blade needs to do the high speed impact test of single gravel, existing free expansion type is empty
Gas big gun gas source energy density is inadequate, gravel cannot be accelerated to the left and right Supersonic (400m/s), to be difficult to obtain in high speed gravel
Accurately to the impact test data of helicopter engine blade under impact.
And in relevant technical field, existing high pressed air gun includes: 1, the cannon that is driven with powder gases, general to send out
Firing rate degree belongs to the equipment that military equipment field uses in 1-2km/s.2, two-stage or multistage light-gas gun, emission rate are more than
3km/s belongs to high-energy physics, the equipment that hypervelocity impact field uses.Aero-engine foreign object ingestion area research it is opposite
Speed is generally in transonic speed-supersonic zone, therefore above two high pressed air gun is not applicable, and structure is complicated for above equipment,
Risk is high.
Therefore the technical solution for needing one kind new is to solve the above problems.
Summary of the invention
Goal of the invention: to solve the above problems, providing a kind of small-sized combustion for using combustion gas detonation as transmitting gas source power
Gas big gun experimental rig can control the basic of Detonation Shock Wave by the ratio of the combustion gas of injection and air Mixture, pressure
Energy passes through the pressure of counter balance pocket calibration and fine-tuned emission bullet to pre-set velocity.
Technical solution: in order to achieve the above objectives, following technical solution can be used in the present invention:
A kind of single gravel erosion combustion gas big gun experimental rig, including gas chamber, be located at the indoor elastic balloon of gas, connection gas
Pressure release counter balance pocket, connection pressure release counter balance pocket and the gun tube extended forward of room front end, bullet filling section, gas injection on gun tube
Ignition system；The gas injection ignition system includes being connected to elastic balloon and running through discharge chamber and have the air injection pipe of throttle valve, connect
The fuel gas inlet and air intlet, the electric plug for igniting, the pressure for detecting pressure in elastic balloon of logical air injection pipe
Sensor, controller；Wherein controller is to receive the pressure signal of pressure sensor transmission and to control electric plug
The opening and closing of enabling and throttle valve.
The utility model has the advantages that the single gravel erosion provided by the invention with combustion gas big gun experimental rig be mainly used in helicopter or
In the leaf assay of other aircraft for needing that there is engine blade of person.Wherein it is possible to mixed by the combustion gas of injection and air
The ratio of gas, pressure are closed to control the basic energy of Detonation Shock Wave, by counter balance pocket calibration and fine-tuned emission bullet to default
The pressure of speed, since the instantaneous pressure that Detonation Shock Wave generates is enough the supersonic speed for being promoted to bullet greater than 400m/s, this
The gravel speed needed in leaf assay, and replacement and the elastic balloon of bullet can be realized by simple structure for invention
Be very convenient to, be conducive to improve test efficiency.And it is controlled by the ratio of the combustion gas of injection and air Mixture, pressure
The basic energy of Detonation Shock Wave processed can adjust the velocity of shot of needs, and the gravel impact leaf to friction speed may be implemented
The simulation of piece, improves versatility.
Further, the gas injection ignition system further includes gas injection distributing valve, and the gas injection distributing valve is equally by controller
Control.
Further, the bullet filling section includes the translation fast-assembling ring being set on gun tube, and gun tube is translated corresponding
The position of fast-assembling ring is equipped with opening；When translating fast-assembling ring and being opened along gun tube translation opposed open to be packed into bullet, bullet
Translation fast-assembling ring playback closing opening after ball filling；It further include the bullet support in opening in the bullet filling section.
Further, the exit of the gun tube is equipped with hydraulic damping block type separation of the projectile seat device.
Further, further include band sliding rail rack, the band sliding rail rack to carry gas chamber, pressure release counter balance pocket, gun tube,
Gas injection ignition system.
Further, the gas chamber includes the gas chamber rear cover the inner cavity of gas chamber to be opened and closed, and is inlayed in the gas chamber rear cover
Embedded with triggering platform, the electric plug and pressure sensor are mounted on the triggering platform, and the opening of elastic balloon
It is wrapped on the triggering platform and the opening of elastic balloon is by being stuck on the triggering platform.
And the present invention also provides a kind of technical solutions of the control method of above-mentioned combustion gas big gun experimental rig:
Gas injection distributing valve is controlled by controller and throttle valve injects gas-air body into elastic balloon and makees
For combustible gas, gas chamber detects the real-time air pressure in elastic balloon as guarantor's type chamber, pressure sensor, which reaches setting
When pressure, controller controls electric plug igniting, and combustion mixture detonation generates shock wave in elastic balloon, in pressure release counter balance pocket
In reach nominal pressure, push pellet injection.
Detailed description of the invention
Fig. 1 is the structure chart of single gravel erosion combustion gas big gun experimental rig of the invention.
Specific embodiment
Refering to Figure 1, a kind of single gravel erosion combustion gas big gun experimental rig, including gas chamber 1, to be located at gas indoor
Elastic balloon 2, the pressure release counter balance pocket 3 for being connected to 1 front end of gas chamber, connection pressure release counter balance pocket 3 and the gun tube 4 extended forward are located at big gun
Bullet on pipe 4 loads section 5, gas injection ignition system, hydraulic damping block type separation of the projectile seat device 6, band positioned at gun tube exit
Sliding rail rack 7.Wherein the band sliding rail rack 7 is to carry gas chamber 1, pressure release counter balance pocket 3, gun tube 4, gas injection ignition system.Its
In, the gas injection ignition system includes being connected to elastic balloon 2 and running through discharge chamber 1 and have the air injection pipe 81 of throttle valve 82, connect
The fuel gas inlet 83 and air intlet 84 of logical air injection pipe 81, are similarly positioned in elastic gas at the electric plug 85 in elastic balloon 2
Pressure sensor 86, controller 87 in capsule 2 (in the present embodiment, the controller is PRC controller).Wherein controller
87 to receive the pressure signal of the transmission of pressure sensor 86 and electric plug 85 enables and throttle valve 82 is opened to control
It closes.The gas injection ignition system further includes gas injection distributing valve 88, and the gas injection distributing valve 88 is equally controlled by controller 87, to
The ratio of the combustion gas and air into elastic balloon 2 is adjusted into form the combustion mixture of different ratio.
The control method of above-mentioned combustion gas big gun experimental rig is to control gas injection distributing valve 88 and throttle valve by controller 87
82 inject gas-air body into elastic balloon 2 as combustible gas, and gas chamber 1 is used as guarantor's type chamber, pressure sensor 86
The real-time air pressure in elastic balloon 2 is detected, when which reaches setting pressure, controller 87 controls 85 points of electric plug
Fire, combustion mixture detonation generates shock wave in elastic balloon 2, and nominal pressure is reached in pressure release counter balance pocket, pushes bullet 9
(bullet is the sundries that the aircraft blades such as the gravel in simulation reality are likely encountered) transmitting.Wherein, elastic balloon 2 uses thin-walled
Combustible material production.
And in the present embodiment, the combustion gas big gun experimental rig is single gravel impact use, i.e., penetrates in primary test
Gravel out is that individually, can recharge new gravel after injection again.To realize the effect, the bullet loads section 5
Including the translation fast-assembling ring 51 being set on gun tube 4, and gun tube 4 is equipped with opening in the position of corresponding translation fast-assembling ring 51；When flat
It moves fast-assembling ring 51 to translate along gun tube 4 to be packed into bullet 9 when opposed open is opened, bullet 9 translates fast-assembling ring 51 after loading
Playback closing opening.It further include the bullet support 52 in opening in the bullet filling section 5 to carry positioning bullet 9.It is described
It translates and is equipped with nitrile rubber sealing ring 53 on the inside of fast-assembling ring 51 to translate the sealing between fast-assembling ring 51 and gun tube 4.
And likewise, the gas chamber 1 includes the gas chamber rear cover 11 inner cavity of gas chamber 1 to be opened and closed, the gas chamber rear cover
Triggering platform 12 is inlaid in 11, the electric plug 85 and pressure sensor 86 are mounted on the triggering platform 12, and bullet
Property air bag 2 opening be wrapped on the triggering platform 12 and the opening of elastic balloon by buckle 13 to be stuck in the triggering flat
On platform 12.Buckle 13 equally plays the sealing function to elastic balloon 2, and can quickly replace elastic gas by buckle 13
Capsule 2 is tested when being once also required to the elastic balloon 2 more renewed when being packed into new bullet after the test with entering next time.And
The gas chamber rear cover 11 is to be fixed in gas chamber main body by hinge 14 and buckle 15, while setting in 11 inner surface of gas chamber rear cover
There is tetrafluoroethene sealing ring 16 with the inner cavity of sealed air chamber.
The single gravel erosion provided by the invention is mainly used in helicopter or other with combustion gas big gun experimental rig and needs
In the leaf assay that there is the aircraft of engine blade.Wherein it is possible to pass through the combustion gas of injection and the ratio of air Mixture
Example, pressure control the basic energy of Detonation Shock Wave, pass through the pressure of counter balance pocket calibration and fine-tuned emission bullet to pre-set velocity
Power, since the instantaneous pressure that Detonation Shock Wave generates is enough the supersonic speed for being promoted to bullet greater than 400m/s, the present invention passes through
The gravel speed needed in leaf assay can be realized in simple structure, and the replacement of bullet and the replacement of elastic balloon are non-
It is often convenient, be conducive to improve test efficiency.
In addition, there are many concrete methods of realizing and approach of the invention, the above is only a preferred embodiment of the present invention.
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, can also do
Several improvements and modifications out, these modifications and embellishments should also be considered as the scope of protection of the present invention.What is be not known in the present embodiment is each
The available prior art of component part is realized.
Claims (7)
1. a kind of single gravel erosion combustion gas big gun experimental rig, it is characterised in that: including gas chamber, be located at the indoor elastic gas of gas
Capsule, the pressure release counter balance pocket for being connected to gas chamber front end, connection pressure release counter balance pocket and the gun tube extended forward, the bullet dress on gun tube
Fill out section, gas injection ignition system；
The gas injection ignition system includes being connected to elastic balloon and running through discharge chamber and the air injection pipe with throttle valve, connection gas injection
The fuel gas inlet and air intlet of pipe, for igniting electric plug, for detect the pressure sensor of pressure in elastic balloon,
Controller；Wherein controller is to receive the pressure signal of pressure sensor transmission and enable and save to control electric plug
Flow the opening and closing of valve.
2. combustion gas big gun experimental rig according to claim 1, it is characterised in that: the gas injection ignition system further includes gas injection
Distributing valve, the gas injection distributing valve are equally controlled by controller.
3. combustion gas big gun experimental rig according to claim 1 or 2, it is characterised in that: the bullet filling section includes being arranged
Translation fast-assembling ring on gun tube, and gun tube is equipped with opening in the position of corresponding translation fast-assembling ring；When translation fast-assembling ring is along big gun
To be packed into bullet when pipe translation opposed open is opened, translation fast-assembling ring playback closing opening after bullet filling；The bullet
It further include the bullet support in opening in filling section.
4. combustion gas big gun experimental rig according to claim 3, it is characterised in that: the exit of the gun tube is equipped with hydraulic resistance
Buddhist nun's block type separation of the projectile seat device.
5. combustion gas big gun experimental rig according to claim 4, it is characterised in that: further include band sliding rail rack, the band is sliding
Rail bracket is to carry gas chamber, pressure release counter balance pocket, gun tube and gas injection ignition system.
6. combustion gas big gun experimental rig according to claim 5, it is characterised in that: the gas chamber includes to will be in gas chamber
The gas chamber rear cover of chamber opening and closing, is inlaid with triggering platform in the gas chamber rear cover, the electric plug and pressure sensor are respectively mounted
In on the triggering platform, and the opening of elastic balloon is wrapped on the triggering platform and the opening of elastic balloon passes through card
Buckle is on the triggering platform.
7. according to claim 1 to the control method of combustion gas big gun experimental rig described in any one of 6, it is characterised in that: pass through control
Device control gas injection distributing valve and throttle valve processed inject gas-air body into elastic balloon as combustible gas, and gas chamber is made
For guarantor's type chamber, pressure sensor detects the real-time air pressure in elastic balloon, when which reaches setting pressure, controller control
Electric plug processed is lighted a fire, and combustion mixture detonation generates shock wave in elastic balloon, reaches nominal pressure in pressure release counter balance pocket,
Push pellet injection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085058.4A CN107063615B (en) | 2017-02-17 | 2017-02-17 | A kind of single gravel erosion combustion gas big gun experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085058.4A CN107063615B (en) | 2017-02-17 | 2017-02-17 | A kind of single gravel erosion combustion gas big gun experimental rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107063615A CN107063615A (en) | 2017-08-18 |
| CN107063615B true CN107063615B (en) | 2019-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710085058.4A Active CN107063615B (en) | 2017-02-17 | 2017-02-17 | A kind of single gravel erosion combustion gas big gun experimental rig |
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| Country | Link |
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| CN (1) | CN107063615B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107643221B (en) * | 2017-09-28 | 2023-09-22 | 中国矿业大学(北京) | Low-speed light air gun impact test device |
| CN108344552B (en) * | 2018-03-16 | 2023-12-29 | 中国工程物理研究院总体工程研究所 | Separated experimental equipment for researching high-temperature high-speed impact response of structure |
| CN108931349B (en) * | 2018-04-09 | 2020-08-18 | 南京航空航天大学 | Centrifugal force simulation test device used in high-speed hard object impact test |
| CN110132053A (en) * | 2019-06-21 | 2019-08-16 | 中国科学技术大学 | A kind of compound ignition type burning light-gas gun |
| CN110470446B (en) * | 2019-08-21 | 2020-08-07 | 东北大学 | Composite blade service reliability experimental device under impact, vibration and high-temperature excitation |
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| CN107063615A (en) | 2017-08-18 |
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