CN107353170A - 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
- CN107353170A CN107353170A CN201710729091.6A CN201710729091A CN107353170A CN 107353170 A CN107353170 A CN 107353170A CN 201710729091 A CN201710729091 A CN 201710729091A CN 107353170 A CN107353170 A CN 107353170A
- Authority
- CN
- China
- Prior art keywords
- pressure
- pressure stretch
- stretch
- data
- propellant powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003380 propellant Substances 0.000 title claims abstract description 39
- 239000000843 powder Substances 0.000 title claims abstract description 33
- 238000004364 calculation method Methods 0.000 title claims abstract description 18
- 239000003814 drug Substances 0.000 claims abstract description 31
- 229940079593 drug Drugs 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 20
- 235000013599 spices Nutrition 0.000 claims description 5
- 238000009472 formulation Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000012937 correction Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- -1 granulation Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Medical Treatment And Welfare Office Work (AREA)
Abstract
The invention discloses one kind can be realized not against empirical data and artificial experience, and dynamic calculation is carried out using the pressure stretch data currently obtained in real time during propellant powder pressure stretch, provide the Dynamic calculation method of the pressure stretch technological parameter of appropriate future time point.The present invention use database and interpolation algorithm, can according to existing related data acquisition needed for data initial value, for the formula of any propellant powder, can provide initial pressure stretch technological parameter and the matching numerical value of drug speed.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, this True Data tested can be made full use of to be modified, precision is higher.
Description
Technical field
The present invention relates to a kind of Dynamic calculation method 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, gel, pressure stretch, drying etc., wherein pressure stretch process
It is the molding procedure of propellant powder, the dimensional accuracy of propellant powder, compactness, lustrous surface 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 mould is certain, is joined by suitable technique
Number could obtain preferable propellant powder product.Existing propellant powder pressure stretch technological parameter relies primarily on empirical data, artificial to infer
Obtain, such as prepare triple-base propellant, then need to be adjusted according to conventional test data, if without test data, need
Since the pressure stretch pressure of minimum, pressure is progressively raised, carries out pressure stretch, untill suitable pressure stretch pressure is thought in acquisition.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) press
The calculated value of stretching process parameter can not be corrected in real time, if pressure parameter is improper, can not carry out quick corrected Calculation；(3)
When being modified to pressure stretch parameter, it is necessary to manually correct, the numerical values recited of amendment, carry out, can not be considered by rule of thumb entirely
The formula property of propellant powder and the combined influence of present technological conditions.
The content of the invention
In order to solve the problems, such as that prior art is present, the invention provides one kind can realize not against empirical data and people
Work experience, dynamic calculation is carried out using the pressure stretch data currently obtained in real time during propellant powder pressure stretch, is provided appropriate
The Dynamic calculation method of the pressure stretch technological parameter of future time point.
Calculation procedure is as follows：
(1) database of propellant powder pressure stretch technological parameter and drug speed, external diameter etc. is established；
(2) gun propellant formulation and target drug speed are inputted, database is inquired about 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) first time point P1, V1 and Vm, Pc data are contrasted, 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 for it is non-linear because
Son, determined by the formula and spice property of different propellant powder, typically take 0.5-0.8；
(6) target drug speed Vm and pressure stretch pressure Pc1 is inputted to pressure stretch machine, Pc1=Pc+DP, is pressed 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) second time point P2, V2 and Vm, Pc data are contrasted, 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 performed 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, it can realize not against empirical data and artificial experience, in propellant powder pressure stretch process
In in real time using the pressure stretch data progress dynamic calculation currently obtained, 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, can according to existing related data obtain needed for data initial value.With
Prior art is compared, and for the formula of any propellant powder, can provide the matching of initial pressure stretch technological parameter and drug speed
Numerical value.
(2) correction algorithm of surrounding time point data is used, 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, the True Data that this can be made full use of to test
It is modified, precision is higher.
(3) using the nonlinear factor of different spice characteristics, calculating can be modified 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 of real-time data point is used, ensures that initial input value can obtain in certain scope
Obtain appropriate technological parameter.Compared with prior art, even if the deviation of initial input value and desired value is larger, can also ensure
Obtain appropriate pressure stretch technological parameter.
Brief description of the drawings
Fig. 1 is propellant powder pressure stretch technological parameter dynamic calculating step schematic diagram.
Embodiment
The embodiment 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, external diameter etc. is established；
(2) input gun propellant formulation and target drug speed 25mm/s, gun propellant formulation are 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 about 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) measurement drug speed V and corresponding pressure stretch pressure value P value are as follows in real time：P=10MPa, V=15mm/s；
(5) first time point P, V and Vm, Pc data are contrasted, there is DP=P1 × (Vm-V1)/V1 × y
DP be pressure adjust amplitude, P1 be first time point pressure stretch pressure, V1 be first time point drug speed, y
For nonlinear factor, determined by the formula and spice property of different propellant powder, typically take 0.5-0.8.
The formula propellant powder takes y=0.5, calculates to obtain DP=3.33MPa.
(6) calculated using equation below：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) second time point P, V and Vm, Pc data are contrasted, there is DP=P2 × (Vm-V2)/V2 × y
It is computed obtaining DP=2.59MPa
(9) calculated using equation below：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 performed for later every bit；
(11) after experience N steps (N >=1), PcN=18MPa, Vm=25mm/s
It is now the pressure stretch technological parameter for meeting target drug speed Vm.
For the propellant powder of the formula, using above calculation procedure, after N is walked (N >=1), it is calculated and meets mesh
Mark medicine speed Vm pressure stretch technological parameter, 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, dynamic calculation is carried out using the pressure stretch data currently obtained in real time 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, calculation procedure are as follows：
(1) propellant powder pressure stretch technological parameter database is established；
(2) gun propellant formulation and target drug speed Vm are inputted, database is inquired about 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) first time point P1, V1 and Vm, Pc data are contrasted, have DP=P1 × (Vm-V1)/V1 × y, DP to be adjusted for pressure
View 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) second time point P2, V2 and Vm, Pc data are contrasted, 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 performed for later every bit；
(11) after experience N steps (N >=1), the pressure stretch technological parameter for meeting target drug speed Vm is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729091.6A CN107353170B (en) | 2017-08-23 | 2017-08-23 | A kind of Dynamic calculation method of propellant powder pressure stretch technological parameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710729091.6A CN107353170B (en) | 2017-08-23 | 2017-08-23 | A kind of Dynamic calculation method of propellant powder pressure stretch technological parameter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107353170A true CN107353170A (en) | 2017-11-17 |
| CN107353170B CN107353170B (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710729091.6A Expired - Fee Related 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110688771A (en) * | 2019-10-12 | 2020-01-14 | 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 not_active Expired - Fee Related
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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110688771A (en) * | 2019-10-12 | 2020-01-14 | 中北大学 | Method for calculating combustion performance of flaky multilayer propellant based on osmotic diffusion |
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| Publication number | Publication date |
|---|---|
| CN107353170B (en) | 2018-10-12 |
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Granted publication date: 20181012 |