CN107353170B - A kind of Dynamic calculation method of propellant powder pressure stretch technological parameter - Google Patents
A kind of Dynamic calculation method of propellant powder pressure stretch technological parameter Download PDFInfo
- Publication number
- CN107353170B CN107353170B CN201710729091.6A CN201710729091A CN107353170B CN 107353170 B CN107353170 B CN 107353170B CN 201710729091 A CN201710729091 A CN 201710729091A CN 107353170 B CN107353170 B CN 107353170B
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- pressure
- pressure stretch
- stretch
- data
- propellant powder
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Classifications
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- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
- C06B21/0033—Shaping the mixture
- C06B21/0075—Shaping the mixture by extrusion
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B25/00—Compositions containing a nitrated organic compound
- C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06D—MEANS FOR GENERATING SMOKE OR MIST; GAS-ATTACK COMPOSITIONS; GENERATION OF GAS FOR BLASTING OR PROPULSION (CHEMICAL PART)
- C06D5/00—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets
- C06D5/06—Generation of pressure gas, e.g. for blasting cartridges, starting cartridges, rockets by reaction of two or more solids
Abstract
The invention discloses one kind can realize not against empirical data and artificial experience, is calculated in real time into Mobile state using the pressure stretch data currently obtained during propellant powder pressure stretch, provides the Dynamic calculation method of the pressure stretch technological parameter of appropriate future time point.The present invention uses database and interpolation algorithm, and the initial value of required data can be obtained according to existing related data and can provide initial pressure stretch technological parameter and the matching numerical value of drug speed for the formula of arbitrary propellant powder.Using the correction algorithm of surrounding time point data, the actual experimental data measured in real time can be utilized to be modified, the suitable pressure stretch process parameter value of Step wise approximation, the truthful data that can make full use of this experiment is modified, precision higher.
Description
Technical field
The present invention relates to a kind of Dynamic calculation methods of propellant powder pressure stretch parameter, suitable for propellant powder manufacture course of products
The real-time corrected Calculation of pressure stretch procedure technology parameter.
Background technology
Process prepared by propellant powder product includes absorption, expelling water, granulation, gelatinization, pressure stretch, drying etc., wherein pressure stretch process
It is the molding procedure of propellant powder, dimensional accuracy, compactness, lustrous surface of propellant powder etc. are determined by the quality of pressure stretch process
It is fixed, and the core of pressure stretch process is exactly the design of pressure stretch technological parameter, under conditions of mold is certain, is joined by suitable technique
Number could obtain ideal propellant powder product.Existing propellant powder pressure stretch technological parameter relies primarily on empirical data, artificial to infer
It obtains, such as prepares triple-base propellant, then need to be adjusted according to previous test data, if without test data, need
Since minimum pressure stretch pressure, pressure is gradually raised, carries out pressure stretch, until thinking suitable pressure stretch pressure until obtaining.It is existing
There are the following problems for the computational methods of some propellant powder pressure stretch technological parameters：(1) calculating process needs to rely on existing experiment number
According to being modified by artificial experience, veteran personnel differ greatly with unfamiliar personnel's acquired results；(2) it presses
The calculated value of stretching process parameter cannot be corrected in real time, if pressure parameter is improper, can not carry out quick corrected Calculation；(3)
It when being modified pressure stretch parameter, needs manually to correct, modified numerical values recited carries out by rule of thumb entirely, can not consider
The formula property of propellant powder and the combined influence of present technological conditions.
Invention content
Of the existing technology in order to solve the problems, such as, the present invention provides one kind can realize not against empirical data and people
Work experience is calculated in real time into Mobile state using the pressure stretch data currently obtained during propellant powder pressure stretch, is provided appropriate
The Dynamic calculation method of the pressure stretch technological parameter of future time point.
Steps are as follows for calculating：
(1) database of propellant powder pressure stretch technological parameter and drug speed, outer diameter etc. is established；
(2) gun propellant formulation and target drug speed are inputted, database is inquired and pressure stretch work is carried out using linear interpolation method
The matching primitives of skill parameter and target drug speed；
(3) target drug speed Vm is input to pressure stretch machine with corresponding propellant powder pressure stretch pressure Pc；
(4) drug speed and corresponding pressure stretch pressure value are measured in real time, obtain P1, V1 value at first time point；
(5) data for comparing first time point P1, V1 and Vm, Pc, there is DP=P1 × (Vm-V1)/V1 × y, wherein DP
For pressure adjust amplitude, P1 be first time point pressure stretch pressure, V1 be first time point drug speed, y be it is non-linear because
Son is determined by the formula and spice property of different propellant powder, generally takes 0.5-0.8；
(6) input target drug speed Vm and pressure stretch pressure Pc1 is pressed to pressure stretch machine, Pc1=Pc+DP if DP is more than zero
Pressure increase is stretched, pressure stretch pressure reduces if DP is less than zero；
(7) drug speed V and corresponding pressure stretch pressure value P are measured in real time, obtain P2, V2 value at second time point；
(8) data for comparing second time point P2, V2 and Vm, Pc, there is DP=P2 × (Vm-V2)/V2 × y；
(9) target drug speed Vm and pressure stretch pressure Pc2 is inputted to pressure stretch machine, Pc2=Pc1+DP；
(10) 7,8,9 steps are executed for later every bit；
(11) after experience N steps (N >=1), the pressure stretch technological parameter for meeting target drug speed Vm is obtained.
Therefore, using database and interpolation algorithm, the correction algorithm of surrounding time point data, different spice characteristics it is non-thread
Sex factor, the loop iteration of real-time data point can be realized not against empirical data and artificial experience, in propellant powder pressure stretch process
In in real time using the pressure stretch data currently obtained into Mobile state calculate, provide the pressure stretch technological parameter of appropriate future time point
Dynamic calculation method.
The beneficial effects are mainly as follows the following aspects.
(1) database and interpolation algorithm are used, the initial value of required data can be obtained according to existing related data.With
The prior art is compared, and for the formula of arbitrary propellant powder, can provide the matching of initial pressure stretch technological parameter and drug speed
Numerical value.
(2) correction algorithm for using surrounding time point data, can be repaiied using the actual experimental data measured in real time
Just, the suitable pressure stretch process parameter value of Step wise approximation.Compared with prior art, it can make full use of the truthful data of this experiment
It is modified, precision higher.
(3) using the nonlinear factor of different spice characteristics, it can be modified calculating for different propellant powder, ensured
Preferable matching primitives can be carried out to different type propellant powder.Compared with prior art, the applicable surface of calculating is wider, calculating
Step number is less.
(4) the loop iteration method for using real-time data point ensures that initial input value can obtain in a certain range
Obtain appropriate technological parameter.Compared with prior art, can ensure if even if the deviation of initial input value and desired value is larger
Obtain appropriate pressure stretch technological parameter.
Description of the drawings
Fig. 1 is propellant powder pressure stretch technological parameter dynamic calculating step schematic diagram.
Specific implementation mode
The specific implementation mode of the present invention is described in further detail below.
According to Fig. 1, by taking triple-base propellant as an example, the pressure stretch technological parameter dynamic calculating step of the propellant powder is as follows.
(1) database of propellant powder pressure stretch technological parameter and drug speed, outer diameter etc. is established；
(2) it inputs gun propellant formulation and target drug speed 25mm/s, gun propellant formulation is as follows
| NC (%) | NG (%) | RDX (%) | NGU (%) | C2 (%) | TiO2 (%) |
| 32.3±2.0 | 26.2±1.2 | 27.6±1.5 | 12.0±1.0 | 1.4±0.3 | 0.5±0.2 |
Use linear interpolation method result of calculation as follows after inquiring database：Pc=10MPa, Vm=25mm/s
(3) target drug speed Vm is input to pressure stretch machine with corresponding propellant powder pressure stretch pressure Pc；
(4) it measures drug speed V in real time and corresponding pressure stretch pressure value P value is as follows：P=10MPa, V=15mm/s；
(5) data for comparing first time point P, V and Vm, Pc, there is DP=P1 × (Vm-V1)/V1 × y
DP is that pressure adjusts amplitude, and P1 is the pressure stretch pressure of first time point, and V1 is the drug speed of first time point, y
For nonlinear factor, is determined by the formula and spice property of different propellant powder, generally take 0.5-0.8.
The formula propellant powder takes y=0.5, calculates to obtain DP=3.33MPa.
(6) it is calculated using following formula：Pc1=Pc+DP, Pc1=13.33MPa
Target drug speed Vm and pressure stretch pressure Pc1 is inputted to pressure stretch machine
(7) drug speed V and corresponding pressure stretch pressure value P are measured in real time, there is P=13.33MPa, V=18mm/s；
(8) data for comparing second time point P, V and Vm, Pc, there is DP=P2 × (Vm-V2)/V2 × y
It is computed to obtain DP=2.59MPa
(9) it is calculated using following formula：Pc2=Pc1+DP, Pc2=15.92MPa
Target drug speed Vm and pressure stretch pressure Pc2 is inputted to pressure stretch machine
(10) 7,8,9 steps are executed for later every bit；
(11) after experience N steps (N >=1), PcN=18MPa, Vm=25mm/s
It is the pressure stretch technological parameter for meeting target drug speed Vm at this time.
For the propellant powder of the formula, it is calculated after N is walked (N >=1) using the above step that calculates and meets mesh
Mark the pressure stretch technological parameter of medicine speed Vm, PcN=18MPa, Vm=25mm/s.
Therefore, the Dynamic calculation method of a kind of pressure stretch technological parameter of the invention, can realize not against empirical data and
Artificial experience is calculated in real time into Mobile state using the pressure stretch data currently obtained during propellant powder pressure stretch, and finally obtained
Meet the pressure stretch technological parameter of target drug speed.
Claims (1)
1. a kind of Dynamic calculation method of propellant powder pressure stretch technological parameter, steps are as follows for calculating：
(1) propellant powder pressure stretch technological parameter database is established；
(2) gun propellant formulation and target drug speed Vm are inputted, database is inquired and pressure stretch technique is carried out using linear interpolation method
The matching primitives of parameter and target drug speed；
(3) target drug speed Vm is input to pressure stretch machine with corresponding propellant powder pressure stretch pressure Pc；
(4) drug speed V and corresponding pressure stretch pressure value P are measured in real time, obtain P1, V1 value at first time point；
(5) data for comparing first time point P1, V1 and Vm, Pc, it is pressure tune to have DP=P1 × (Vm-V1)/V1 × y, DP
Whole picture degree, y are nonlinear factor, are determined by the formula and spice property of different propellant powder, take 0.5-0.8；
(6) target drug speed Vm and pressure stretch pressure Pc1 is inputted to pressure stretch machine, Pc1=Pc+DP, the pressure stretch pressure if DP is more than zero
Power increases, and pressure stretch pressure reduces if DP is less than zero；
(7) drug speed V and corresponding pressure stretch pressure value P are measured in real time, obtain P2, V2 value at second time point；
(8) data for comparing second time point P2, V2 and Vm, Pc, there is DP=P2 × (Vm-V2)/V2 × y；
(9) target drug speed Vm and pressure stretch pressure Pc2 is inputted to pressure stretch machine, Pc2=Pc1+DP；
(10) 7,8,9 steps are executed for later every bit；
(11) after experience N steps, the pressure stretch technological parameter for meeting target drug speed Vm, wherein N >=1 are obtained.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710729091.6A CN107353170B (en) | 2017-08-23 | 2017-08-23 | A kind of Dynamic calculation method of propellant powder pressure stretch technological parameter |
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| CN201710729091.6A CN107353170B (en) | 2017-08-23 | 2017-08-23 | A kind of Dynamic calculation method of propellant powder pressure stretch technological parameter |
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| CN107353170A CN107353170A (en) | 2017-11-17 |
| CN107353170B true CN107353170B (en) | 2018-10-12 |
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| CN110688771B (en) * | 2019-10-12 | 2022-12-02 | 中北大学 | Method for calculating combustion performance of flaky multilayer propellant based on osmotic diffusion |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1601392A (en) * | 1978-04-12 | 1981-10-28 | Pyrodex Corp | Gas generating compositions |
| US4386569A (en) * | 1979-05-30 | 1983-06-07 | The United States Of America As Represented By The Secretary Of The Army | Solid propellant grain for improved ballistic performance guns |
| CN1046888A (en) * | 1989-04-25 | 1990-11-14 | Wnc-氮化学有限公司 | With ethanol and ether is the method and apparatus that solvent prepares single-base gun propellant |
| CN1204635A (en) * | 1998-06-26 | 1999-01-13 | 王保东 | Method for reducing nitrogen content and viscosity of nitro-cotton extracted from retired mono-propellant powder |
-
2017
- 2017-08-23 CN CN201710729091.6A patent/CN107353170B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1601392A (en) * | 1978-04-12 | 1981-10-28 | Pyrodex Corp | Gas generating compositions |
| US4386569A (en) * | 1979-05-30 | 1983-06-07 | The United States Of America As Represented By The Secretary Of The Army | Solid propellant grain for improved ballistic performance guns |
| CN1046888A (en) * | 1989-04-25 | 1990-11-14 | Wnc-氮化学有限公司 | With ethanol and ether is the method and apparatus that solvent prepares single-base gun propellant |
| CN1204635A (en) * | 1998-06-26 | 1999-01-13 | 王保东 | Method for reducing nitrogen content and viscosity of nitro-cotton extracted from retired mono-propellant powder |
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| CN107353170A (en) | 2017-11-17 |
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