CN109959754A - Solid propellant super-pressure Burning rate testing pressure equilibrium regulating system - Google Patents
Solid propellant super-pressure Burning rate testing pressure equilibrium regulating system Download PDFInfo
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- CN109959754A CN109959754A CN201910257366.XA CN201910257366A CN109959754A CN 109959754 A CN109959754 A CN 109959754A CN 201910257366 A CN201910257366 A CN 201910257366A CN 109959754 A CN109959754 A CN 109959754A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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Abstract
A kind of solid propellant super-pressure Burning rate testing pressure equilibrium regulating system, the present invention are made of gas-liquid mixed note piston cylinder, pneumatic proportional regulating valve, pneumatic water booster pump, control system and high compression combustion chamber.Pneumatic water booster pump is used to provide to high compression combustion chamber hydraulic；Gas-liquid mixed infuses piston cylinder and the online use of pneumatic ratio adjusting valve, for adjusting the indoor fluctuation of pressure of constant sample combustion process mesohigh burning.Propellant burning velocity testing pressure is increased to 100MPa by 20MPa to reach the constant pressure environment of sample combustion process when propellant burning velocity testing by the liquid pressure that the present invention realizes use≤1MPa gas-powered, control and adjusting 100MPa.
Description
Technical field
It is specifically a kind of for testing the various explosive inflammation rates of pressure≤100MPa the present invention relates to Hydraulic Field
Pressure equilibrium regulating system.
Background technique
Propellant burning velocity testing gas boosting Principles of Regulation: air compressor fills high pressure to storage cylinder, and sample is placed in
In high compression combustion chamber, water is injected, it is then closed, control to adjust the intake & exhaust valves being mounted between combustion chamber and storage cylinder
Door, is maintained at combustion chamber under certain pressure, carries out the Burning rate testing under different pressure.
Due to gas from liquid compression than different, hydraulic safety be much higher than air pressure.Use traditional gas boost pressure regulation
System is higher for the corrosion resistance of component and security requirement, and Burning rate testing highest operating pressure reaches 20MPa.And liquid
Boost pressure regulation system is pressurized by pneumatic water pressurization pump liquid, and during sample combustion, pneumatic proportional regulating valve automatically adjusts gas-liquid
Pressure in mixing note piston cylinder, makes cylinder compression, thus the fluctuation of pressure that constant combustion gas generates.Using liquid boost pressure regulation mode
It afterwards, is gas pressure intensity≤1MPa with control gas only in gas-liquid mixed note piston cylinder, other positions are hydraulic pressure, and Burning rate testing is most
High operating pressure reaches 100MPa, improves the safety of test, is automatically adjusted using pneumatic proportional regulating valve, improves sample
The accuracy of combustion process invariablenes pressure of liquid.
It is warm just to have waited in " with the principle and method of measurement of the closed outbreak period practical burn rate of propellant powder " (" explosive wastewater journal " 2011
Year the 3rd phase of volume 34 June) in propose the principle and method that the practical burn rate of propellant powder is measured with the closed outbreak period.
Li Zhaozhong etc. is in " solid propellant combustion rate closed bomb test method " (" solid-rocket technology " in March, 1993
1st phase) in give the physical model and mathematical model of this method, and the test carried out with modified propellant sample.
But the above method is that testing high voltage plays by force propellant static state burn rate to have relevant research to report, be there is no using gas-liquid
Mixing pressurization note piston cylinder, pneumatic water booster pump and pneumatic ratio adjusting valve liquid boost pressure regulation system come testing high voltage it is strong under
The report of propellant static state burn rate.
Propellant static state burn rate is the important means of propulsion charge Process Quality Monitoring.Domestic each powder charge factory at present
" the underwater sound emission measuring method of composite solidpropellant medicinal strip burn rate " QJ912-85 " underwater acoustic-emission " is used to measure
The burn rate of composite solidpropellant medicinal strip, using gas buffer and liquid capsule buffering method.The gas buffer and liquid capsule buffering method
In place of Shortcomings: 1, test pressure is lower, and highest tests pressure 20MPa；2, pressure charging system is complicated；3, it is hidden to have safety for operation
Suffer from.
Summary of the invention
Test pressure existing in the prior art is lower, pressure charging system is complicated to overcome, and there are security risks not
Foot, the invention proposes a kind of solid propellant super-pressure Burning rate testing pressure equilibrium regulating systems.
The present invention includes pneumatic proportional regulating valve, gas-liquid mixed pressurization plunger cylinder, air accumulator, water tank, the pressurization of pneumatic water
Pump, pressure transmitter, high compression combustion chamber.The arrival end of the pneumatic proportional regulating valve passes through the external air compressor machine of oil water separator；
The rodless cavity inlet communication of the pneumatic proportional regulating valve long logical delivery outlet and gas-liquid mixed pressurization plunger cylinder；The pneumatic proportional
The long delivery outlet and gas-liquid mixed pressurization plunger cylinder rod chamber inlet communication closed of regulating valve.The gas-liquid mixed pressurization plunger cylinder
Upper cover of piston rod be equipped with piston rod set；The lower end of the piston rod set and between pneumatic water booster pump and high compression combustion chamber
Four-way pipe connection on connecting line；One end of the connecting line is connected to the liquid inlet of the high compression combustion chamber, the connection
The other end of pipeline is connected to the water outlet of the pneumatic water booster pump, and is controlled and flowed to by check valve；On the four-way pipe
It is also connected with emptying pipeline, evacuated tube road is connected with exhaust-valve.The water inlet of the pneumatic water booster pump is connected to water tank,
And it is controlled and is flowed to by check valve；The gas circuit control mouth of the pneumatic water booster pump accesses gas circuit pipe by electromagnetic gas flow valve
On road.After oil water separator, a part enters pneumatic proportional regulating valve by pipeline for air pressure from external air compressor machine
In entrance, another part passes through in Pipeline transport to pneumatic water booster pump and bidirectional electromagnetic valve.The output of the bidirectional electromagnetic valve
Mouth is connected to the exhaust-valve.
The high compression combustion chamber, by piping connection threeway, connects pressure transmitter into hole all the way, connects a four-way all the way.
Other three tunnel of four-way, connects exhaust-valve all the way, connects the outlet of gas-liquid mixed pressurization plunger cylinder all the way, and connection is pneumatic all the way
The outlet of water booster pump.The control gas inlet and outlet of gas-liquid mixed plunger cylinder connects pneumatic proportional regulating valve, pneumatic proportional
Regulating valve connection≤1MPa air accumulator.Pneumatic water booster pump control port connects pressure electromagnetic valve for adjusting door, and pressure adjusts electricity
Magnet valve door connection≤1MPa air accumulator.Exhaust-valve controls gas and imports and exports connection≤1MPa air accumulator.Air accumulator connects pneumatics
Machine and its attachment, by air compressor machine offer≤1MPa compressed air.
Air pressure is supplied respectively to hydraulic proportional regulating valve, Pneumatic booster pump and bi-directional electromagnetic by three tunnels of oil water separator point
Valve.
After propellant sample is installed in combustion chamber, Pneumatic booster pump starts to start, and combustion chamber pressure is increased to setting pressure.
Propellant sample is lighted, the combustion gas that propellant sample combustion generates can be such that burning intraventricular pressure increases by force, and pressure transducer monitors
Combustion chamber pressure and setting pressure difference are greater than according to determined by test case when 0.5MPa, and hydraulic proportional adjusts response valve row
The gas in gas-liquid mixed note piston cylinder, gas-liquid mixed infuse piston cylinder piston retraction, increase the volume of combustion chamber out, thus flat
The indoor fluctuation of pressure of weighing apparatus burning.After propellant sample combustion, the indoor gas of exhaust-valve discharge burning and water.
The present invention is by gas-liquid mixed note piston cylinder, pneumatic proportional regulating valve, pneumatic water booster pump, control system and high compression ignition
Burn the equipment such as room composition.Pneumatic water booster pump is used to provide to high compression combustion chamber hydraulic；Gas-liquid mixed infuses piston cylinder and pneumatic ratio
The example online use of regulating valve, for adjusting the indoor fluctuation of pressure of constant sample combustion process mesohigh burning.
The present invention realizes use≤1MPa gas-powered, control and the liquid pressure for adjusting 100MPa, pushes away to reach
The constant pressure environment of sample combustion process when into agent Burning rate testing；Propellant burning velocity testing pressure is increased to by the present invention by 20MPa
100MPa。
In the present invention, interior closed, pneumatic proportional regulating valve driving gas-liquid mixed note plug when sample is mounted on high-pressure combustion
Cylinder top is to topmost position.Pneumatic water booster pump starts to start, and hydraulic pressure is injected into combustion chamber, and monitor by pressure transmitter
The intraventricular pressure that burns is strong.Pneumatic water booster pump is controlled by electromagnetic gas flow valve；The electromagnetic gas flow valve by 4~20mA electric current
The output for controlling its gas flow, by exporting different gas flows, to adjust the frequency of pneumatic water booster pump piston motion.
When pneumatic water booster pump initial pressurization, burning intraventricular pressure is larger with setting value difference by force；The pneumatic water booster pump pressurization frequency is high, connects
When close-target value, it is slow that the frequency of piston motion reduces pressurization；Approach by inchmeal sets target, pressure；When reaching setting value, pneumatically
Water booster pump stops.Light the sample in high-pressure combustion room, the combustion gas indoor pressure that can make to burn increases, when pressure transducer is supervised
When measuring burning intraventricular pressure by force with setting pressure difference greater than 0.5MPa, pneumatic proportional adjusts response valve discharge gas-liquid mixed note plug
Gas in cylinder, gas-liquid mixed infuse piston cylinder retraction, increase the volume of combustion chamber, to reach combustion process high compression combustion chamber
Interior constant pressure environment.Gas-liquid mixed infuses precision, the pressure difference of the stroke and rate of piston cylinder retraction by pneumatic proportional regulating valve
Be greater than and capture card sampling precision determine.
The present invention is using gas-liquid mixed pressurization note piston cylinder, the new liquid of pneumatic water booster pump and pneumatic ratio adjusting valve
Boost pressure regulation system can be used for the test of the materials such as various explosives super-pressure (≤100MPa) burn rate.
It is pressurized and is adjusted using the new liquid that gas-liquid mixed is pressurized note piston cylinder, pneumatic water booster pump and pneumatic ratio adjusting valve
Section system, Burning rate testing highest operating pressure reach 100MPa, improve the safety of test, and sample combustion process pressure is constant
It is accurate.
Development with tactical missile to high specific impulse, High Voltage demand, propellant formulation；System is badly in need of will be to firing under High Voltage
Speed test, propellant static state Burning rate testing needs to carry out under relative constant pressure atmosphere, with simulated engine igniter chamber
Constant pressure environment so that static Burning rate testing is more really characterized the accurate burn rate value under different pressure.Pneumatic proportional of the invention
The response speed of regulating valve is Millisecond, and pressure equilibrium speed is fast, precision is high, and Burning rate testing is statistics indicate that combustion chamber of the invention
It is+1.22MPa that pressure, which is pressurized maximum value maximum deviation, and average deviation is+0.95MPa, and pressurization precision is ± 0.2MPa, constant pressure essence
Degree is ± 0.8MPa, better than traditional Burning rate testing system.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure: 1. pneumatic proportional regulating valves；2. gas-liquid mixed pressurization plunger cylinder；3. bidirectional electromagnetic valve；4. water tank；5. gas
Dynamic water booster pump；6. pressure transmitter；7. high compression combustion chamber；8. oil water separator；9. connecting line；10. electromagnetic gas flow
Valve；11. gas path pipe；12. exhaust-valve.
Specific embodiment
This implementation is a kind of solid propellant super-pressure Burning rate testing pressure equilibrium regulating system, including pneumatic proportional is adjusted
Valve 1, gas-liquid mixed pressurization plunger cylinder 2, air accumulator 3, water tank 4, pneumatic water booster pump 5, pressure transmitter 6, high compression combustion chamber
7。
The arrival end of the pneumatic proportional regulating valve 1 passes through the external air compressor machine of oil water separator 8；The pneumatic proportional regulating valve
The rodless cavity inlet communication of long logical delivery outlet and gas-liquid mixed pressurization plunger cylinder 2；Pneumatic proportional regulating valve length is closed defeated
Outlet and gas-liquid mixed pressurization plunger cylinder rod chamber inlet communication.The upper cover of piston rod of the gas-liquid mixed pressurization plunger cylinder fills
There is piston rod set；On the lower end of the piston rod set and connecting line 9 between pneumatic water booster pump 5 and high compression combustion chamber 7
Four-way pipe connection；One end of the connecting line is connected to the liquid inlet of the high compression combustion chamber, the connecting line 9 it is another
End is connected to the water outlet of the pneumatic water booster pump 5, and is controlled and flowed to by check valve；The row of being also connected on the four-way pipe
Blank pipe road, evacuated tube road are connected with exhaust-valve 12.
The water inlet of the pneumatic water booster pump is connected to water tank 4, and is controlled and flowed to by check valve；The pneumatic water increases
The gas circuit control mouth of press pump is accessed on gas path pipe 11 by electromagnetic gas flow valve 10.
After oil water separator 8, a part enters pneumatic proportional by pipeline and adjusts for air pressure from external air compressor machine
In the entrance of valve 1, another part passes through in Pipeline transport to pneumatic water booster pump 5 and bidirectional electromagnetic valve 3.The bidirectional electromagnetic valve
Delivery outlet be connected to the exhaust-valve 12.
In the present embodiment, the high compression combustion chamber 7, by piping connection threeway, connects pressure transmitter 6, all the way into hole all the way
Connect a four-way.Other three tunnel of four-way, connects exhaust-valve all the way, connects going out for gas-liquid mixed pressurization plunger cylinder 2 all the way
Mouthful, the outlet of pneumatic water booster pump 5 is connected all the way.The pneumatic ratio of the control gas inlet and outlet connection of gas-liquid mixed plunger cylinder 2
Example regulating valve 1, pneumatic proportional regulating valve connection≤1MPa air accumulator 3.Pneumatic water booster pump 5 controls port connection pressure and adjusts
Electromagnetic valve, pressure electromagnetic valve for adjusting door connection≤1MPa air accumulator 3.Exhaust-valve controls gas and imports and exports connection≤1MPa storage
Gas tank 3.Air accumulator connects air compressor machine and its attachment, by air compressor machine offer≤1MPa compressed air.
When work, air pressure is supplied respectively to hydraulic proportional regulating valve, Pneumatic booster pump and double by oil water separator point three tunnels
To solenoid valve, hydraulic proportional regulating valve driving gas-liquid mixed note piston cylinder makes its piston motion to lowest part.It is installed in combustion chamber
After propellant sample, Pneumatic booster pump starts to start, and combustion chamber pressure is increased to setting pressure.Propellant sample is lighted, is promoted
The combustion gas that agent sample combustion generates can be such that burning intraventricular pressure increases by force, and pressure transducer monitors combustion chamber pressure and setting pressure
Difference is greater than according to determined by test case when 0.5MPa, and hydraulic proportional is adjusted in response valve discharge gas-liquid mixed note piston cylinder
Gas, gas-liquid mixed infuse piston cylinder piston retraction, increase the volume of combustion chamber, thus the indoor pressure waves of balance combustion
It is dynamic.After propellant sample combustion, the indoor gas of exhaust-valve discharge burning and water.Test terminates.
Claims (4)
1. a kind of solid propellant super-pressure Burning rate testing pressure equilibrium regulating system, which is characterized in that including pneumatic proportional tune
Save valve, gas-liquid mixed pressurization plunger cylinder, air accumulator, water tank, pneumatic water booster pump, pressure transmitter, high compression combustion chamber；It is described
The arrival end of pneumatic proportional regulating valve passes through the external air compressor machine of oil water separator；The long logical delivery outlet of the pneumatic proportional regulating valve with
The rodless cavity inlet communication of gas-liquid mixed pressurization plunger cylinder；The long delivery outlet closed of the pneumatic proportional regulating valve and gas-liquid mixed increase
Compression leg piston cylinder rod chamber inlet communication；The upper cover of piston rod of the gas-liquid mixed pressurization plunger cylinder is equipped with piston rod set；The work
Four-way pipe on the lower end of stopper rod set and the connecting line between pneumatic water booster pump and high compression combustion chamber connects；The connection
One end of pipeline is connected to the liquid inlet of the high compression combustion chamber, the other end of the connecting line and the pneumatic water booster pump
Water outlet connection, and by check valve control flow direction；Emptying pipeline is also connected on the four-way pipe, evacuated tube road connects
It is connected to exhaust-valve；The water inlet of the pneumatic water booster pump is connected to water tank, and is controlled and flowed to by check valve；The pneumatic water
The gas circuit control mouth of booster pump is accessed on gas path pipe by electromagnetic gas flow valve；Air pressure from external air compressor machine is by oil
After separator, a part is entered by pipeline in the entrance of pneumatic proportional regulating valve, and another part passes through Pipeline transport to gas
In dynamic water booster pump and bidirectional electromagnetic valve 3；The delivery outlet of the bidirectional electromagnetic valve is connected to the exhaust-valve.
2. solid propellant super-pressure Burning rate testing pressure equilibrium regulating system as described in claim 1, which is characterized in that described
High compression combustion chamber, by piping connection threeway, connects pressure transmitter into hole all the way, connects a four-way all the way；Other the three of four-way
Road connects exhaust-valve all the way, connects the outlet of gas-liquid mixed pressurization plunger cylinder all the way, connects going out for pneumatic water booster pump all the way
Mouthful；The control gas inlet and outlet connection pneumatic proportional regulating valve of gas-liquid mixed plunger cylinder, the connection of pneumatic proportional regulating valve≤
The air accumulator of 1MPa；Pneumatic water booster pump control port connection pressure electromagnetic valve for adjusting door, the connection of pressure electromagnetic valve for adjusting door≤
The air accumulator of 1MPa；Exhaust-valve controls gas and imports and exports connection≤1MPa air accumulator；Air accumulator connects air compressor machine and its attachment, by
Air compressor machine offer≤1MPa compressed air.
3. solid propellant super-pressure Burning rate testing pressure equilibrium regulating system as described in claim 1, which is characterized in that air pressure
Hydraulic proportional regulating valve, Pneumatic booster pump and bidirectional electromagnetic valve are supplied respectively to by three tunnels of oil water separator point.
4. solid propellant super-pressure Burning rate testing pressure equilibrium regulating system as described in claim 1, which is characterized in that firing
After burning room installation propellant sample, Pneumatic booster pump starts to start, and combustion chamber pressure is increased to setting pressure；Light propellant sample
Product, propellant sample combustion generate combustion gas can make burn intraventricular pressure increase by force, pressure transducer monitor combustion chamber pressure with
It sets pressure difference to be greater than according to determined by test case when 0.5MPa, hydraulic proportional adjusts response valve discharge gas-liquid mixed note
Gas in piston cylinder, gas-liquid mixed infuse piston cylinder piston retraction, increase the volume of combustion chamber, so that balance combustion is indoor
Fluctuation of pressure；After propellant sample combustion, the indoor gas of exhaust-valve discharge burning and water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018115440233 | 2018-12-17 | ||
| CN201811544023 | 2018-12-17 |
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| CN109959754A true CN109959754A (en) | 2019-07-02 |
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| CN201910257366.XA Pending CN109959754A (en) | 2018-12-17 | 2019-04-01 | Solid propellant super-pressure Burning rate testing pressure equilibrium regulating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208255A (en) * | 2020-02-24 | 2020-05-29 | 北京理工大学 | Visual high-pressure burning rate instrument and method for multiple solid propellant drug strips |
| CN115618171A (en) * | 2022-06-06 | 2023-01-17 | 北京理工大学 | Propellant combustion balance product solving method based on homotopy algorithm |
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| CN102095800A (en) * | 2011-02-17 | 2011-06-15 | 西安电子科技大学 | System for testing ultrasonic dynamic burning rate of solid propellant |
| CN102095839A (en) * | 2011-02-17 | 2011-06-15 | 西安电子科技大学 | Multi-target-line dynamic combustion performance testing system for solid propellant |
| CN102967526A (en) * | 2012-11-28 | 2013-03-13 | 西北工业大学 | Method for measuring relationship between actual temperature and pressure in combustion process through constant volume combustor method |
| CN104345118A (en) * | 2013-07-29 | 2015-02-11 | 西安电子科技大学 | Solid propellant multi-target wire dynamic combustion performance testing system and method thereof |
-
2019
- 2019-04-01 CN CN201910257366.XA patent/CN109959754A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344101A (en) * | 2008-08-27 | 2009-01-14 | 华南理工大学 | Plunger gas-liquid reinforcement vat and gas-liquid combination-controlled force control apparatus containing the same |
| CN102095800A (en) * | 2011-02-17 | 2011-06-15 | 西安电子科技大学 | System for testing ultrasonic dynamic burning rate of solid propellant |
| CN102095839A (en) * | 2011-02-17 | 2011-06-15 | 西安电子科技大学 | Multi-target-line dynamic combustion performance testing system for solid propellant |
| CN102967526A (en) * | 2012-11-28 | 2013-03-13 | 西北工业大学 | Method for measuring relationship between actual temperature and pressure in combustion process through constant volume combustor method |
| CN104345118A (en) * | 2013-07-29 | 2015-02-11 | 西安电子科技大学 | Solid propellant multi-target wire dynamic combustion performance testing system and method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111208255A (en) * | 2020-02-24 | 2020-05-29 | 北京理工大学 | Visual high-pressure burning rate instrument and method for multiple solid propellant drug strips |
| CN111208255B (en) * | 2020-02-24 | 2021-01-05 | 北京理工大学 | Visual high-pressure burning rate instrument and method for multiple solid propellant drug strips |
| CN115618171A (en) * | 2022-06-06 | 2023-01-17 | 北京理工大学 | Propellant combustion balance product solving method based on homotopy algorithm |
| CN115618171B (en) * | 2022-06-06 | 2023-10-24 | 北京理工大学 | Method for solving propellant combustion balance product based on homotopy algorithm |
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Application publication date: 20190702 |