CN112253330A - Forming device for freely filling silver-embedded wire into explosive column and using method thereof - Google Patents
Forming device for freely filling silver-embedded wire into explosive column and using method thereof Download PDFInfo
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- CN112253330A CN112253330A CN202010889220.XA CN202010889220A CN112253330A CN 112253330 A CN112253330 A CN 112253330A CN 202010889220 A CN202010889220 A CN 202010889220A CN 112253330 A CN112253330 A CN 112253330A
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- silver wire
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/08—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using solid propellants
- F02K9/24—Charging rocket engines with solid propellants; Methods or apparatus specially adapted for working solid propellant charges
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Abstract
The invention provides a forming device for freely filling silver-embedded wires into a grain and a using method thereof, wherein the device comprises: a casting mould, a coating sleeve (11), a silver wire fixing plate (4), a special screw, a silver wire (9), a tuner, a pattern plate (6), a spray head (7) and a screw rod (5); a coating sleeve (11) coated with an adhesive is placed in the casting mould; the silver wire fixing plate (4) is arranged at the end part of the upper die (3), and two ends of the silver wire (9) are respectively fixed on the bottom die (1) and the silver wire fixing plate (4) through special screws; the tuner is used for detecting the tightness of the silver wire (9); the silver wire fixing plate (4) is connected with the flower plate (6) and the spray head (7) through the screw rod (5), and the flower plate (6) is installed at the port of the spray head (7). The invention avoids the quality problems of fracture, bending and deviation of the silver wire in the silver-embedded wire freely-filled charge column, and ensures the formation of the silver-embedded wire freely-filled charge column.
Description
Technical Field
The invention relates to a forming device for freely filling a grain and a using method thereof.
Background
For a solid rocket engine, a free filling structure is a charging form with high filling coefficient, and different from direct casting molding (wall-attached casting) in an engine shell, a charge column is filled into the engine in a filling mode, the head of the charge column is fixedly bonded with a front end socket of the shell, and the rest part is in a free state. Because the explosive columns are independently cast and molded, stress strain generated by solidifying and cooling the explosive columns does not need to be considered, the solid explosive columns can be directly adopted for filling, and the mass ratio of the engine can be effectively improved.
The combustion performance of the solid propellant is one of the important performances of the solid propellant, mainly focuses on the combustion speed and the performance indexes related to the combustion speed, and has the following specific requirements: a) the combustion is stable in the working pressure range of the engine, and the combustion speed and the pressure of the combustion chamber do not change uncontrollably along with time, so that the working safety of the engine is ensured; b) the adjustable range of the burning speed is wide so as to meet the requirements of different use purposes; c) the combustion speed fluctuation caused by formulation factors, propellant manufacturing process factors and the like is small so as to reduce the thrust deviation; d) the influence of the initial temperature and the pressure of the propellant on the burning speed is small, so that the environment-adapting capability of the weapon is improved, and the sufficient hit precision is ensured; e) the solid propellant has strong high-temperature and high-speed airflow scouring resistance in the combustion chamber and has predictable and reproducible erosion combustion characteristics.
The main technical approaches for improving the burning rate of the solid propellant are as follows: changing the composition of the propellant (mainly the type of oxidizer and binder); adjusting the dosage, granularity and gradation of the oxidant, and adopting a porous oxidant; selecting a proper combustion speed regulator; embedded metal wires or metal fibers; reasonable combination of the above approaches. Therefore, the silver wire is embedded in the freely-filled grain, so that the burning speed of the propellant along the silver wire can be greatly improved. However, in the preparation process of freely filling the embedded silver wire into the grain, the adopted silver wire has the specification of phi 0.25mm and has better ductility (the elongation at break is 8-22%), and the phenomena of silver wire fracture, bending and deviation are easy to occur in the preparation process of the grain. The silver wire fracture directly leads to the powder column to scrap the processing, and silver wire bending and skew can influence the powder column during operation along the wire combustion deviation design, directly reduces engine operational reliability, even directly burns out or explodes in work.
Disclosure of Invention
The invention aims to solve the problems, and provides a forming device for a silver-embedded wire free-filling grain and a using method thereof, which are used for solving the quality problems of fracture, bending and deviation of the silver wire in the silver-embedded wire free-filling grain and ensuring the forming of the silver-embedded wire free-filling grain.
In order to solve the technical problems, the solution provided by the invention is as follows: a forming device for freely filling a grain with silver-embedded wires comprises: the device comprises a casting mould, a coating sleeve, a silver wire fixing plate, a special screw, a silver wire, a tuner, a pattern plate, a spray head and a screw rod;
the casting mold comprises a bottom mold, a middle mold and an upper mold, the bottom mold, the middle mold and the upper mold are sequentially connected through flanges, and a coating sleeve coated with an adhesive is placed in the casting mold;
the silver wire fixing plate is arranged at the end part of the upper die, two ends of the silver wire are respectively fixed on the bottom die and the silver wire fixing plate through special screws, and the silver wires are distributed along the circumferential direction by taking the center of a reference circle with a certain diameter in the end surface of the silver wire fixing plate as a reference;
the tuner is used for detecting the tightness of the silver wire and adjusting the length of the specific screw according to the detection result, so that the tightness detection result of the silver wire is within the process requirement range;
the silver wire fixing plate is connected with the flower plate and the sprayer through the screw rod, the flower plate is installed at the port of the sprayer, the flower plate is used for dividing propellant slurry which is not degassed into a plurality of fine strips of the propellant slurry under the vacuum condition, and the sprayer is used for guiding the propellant slurry.
The bottom die, the middle die and the upper die are all cylindrical, the bottom die, the middle die and the upper die are coaxially installed, and the end cover of the bottom die is provided with silver wire installation through holes according to requirements.
The silver wire fixing plate is cylindrical, and the end cover is provided with silver wire mounting through holes according to requirements.
The diameter of the silver wire is phi 0.25 mm.
The tone tuning device is used for detecting the tightness of the silver wire after being threaded, the tone tuning device is clamped on a special screw with the silver wire fixing plate fixing the silver wire, the silver wire is poked and bounced through fingers, the pitch of the tone tuning device is read, the length of the special screw is adjusted according to the detection result, and finally the detection result of the tone tuning device is within the process requirement range.
The pattern plate is disc-shaped, a plurality of circles of pattern plate holes are uniformly distributed on the pattern plate along the circumferential direction, and the value range of the aperture of the pattern plate is phi 3.5 mm-phi 4.5 mm.
The use method of the forming device for freely filling the silver-embedded wire with the explosive column comprises the following steps:
firstly, connecting a bottom die, a middle die and an upper die through flanges to form a casting die, placing a coating sleeve coated with an adhesive into the casting die, and connecting the casting die with a silver wire fixing plate according to a positioning requirement;
secondly, threading silver wires, and fixing the silver wires on the bottom die and the silver wire fixing plate respectively by using special screws;
clamping the tone tuning device on the special screw, poking and bouncing the silver wire through fingers, reading the pitch of the tone tuning device, adjusting the length of the special screw by controlling the pitch of the tone tuning device, clamping the tone tuning device on the special screw again, poking and bouncing the silver wire, and reading the pitch of the tone tuning device until the pitch is within the process requirement range;
connecting the silver wire fixing plate, the flower plate and the spray head by using a screw rod, completing pouring assembly according to requirements, and pouring propellant slurry into a coating sleeve coated with an adhesive through the spray head and the flower plate according to process requirements;
and step five, after the pouring is finished, putting the explosive column and the pouring mold together under the set temperature condition, curing according to the requirement, and demolding and shaping after the curing is finished to obtain the silver-embedded wire freely-filled explosive column.
Compared with the prior art, the invention has the advantages that:
because the invention adopts the forming device which is embedded with silver wires and freely loads the grain, compared with the prior art, the invention has the advantages and the practical production effect that: through the application of the silver-embedded wire free-filling grain forming device, the quality problems of breakage, bending or deviation of the silver wires in the silver-embedded wire free-filling grain can be avoided, the quality of the silver-embedded wire free-filling grain is ensured, and the working reliability of the engine is improved.
Drawings
FIG. 1 is a schematic structural diagram of a forming device for freely filling a grain with silver-embedded wires according to the present invention;
FIG. 2 is a schematic view of the structure of the card of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 and 2, a forming device for freely filling a grain with silver-embedded wires comprises: the device comprises a casting mold (comprising a bottom mold 1, a middle mold 2 and an upper mold 3), a coating sleeve, a silver wire fixing plate 4, M3 multiplied by 30 screws 8, M3 multiplied by 12 screws 10, silver wires 9, a tuner, a pattern plate 6 and a spray head assembly (consisting of a screw rod 5 and a spray head 7).
The pouring mold comprises a bottom mold 1, a middle mold 2 and an upper mold 3, the bottom mold 1, the middle mold 2 and the upper mold 3 are sequentially connected through flanges, a coating sleeve 11 coated with an adhesive is placed in the pouring mold, and the middle mold 2 and the upper mold 3 are segmented to be used for freely filling the length control of the explosive columns.
The coating sleeve 11 is used for heat insulation protection of the freely filled grain.
The silver wire fixing plate 4 is arranged at the end part of the upper die 3, two ends of the silver wire 9 are respectively fixed on the bottom die 1 and the silver wire fixing plate 4, and the silver wires 9 are circumferentially distributed by taking the center of a reference circle with a certain diameter in the end surface of the silver wire fixing plate 4 as a reference;
the special screws are used for connecting and fixing the silver wires 9 with the bottom die 1 and the silver wire fixing plate 4, and the common specifications of the special screws are M3 multiplied by 12 and M3 multiplied by 30.
The silver wires 9 are embedded into the propellant to improve the burning rate of the propellant, and the common specification is phi 0.25 mm.
The tuner is used for detecting the tightness of the silver wire 9, and the length of the screw is adjusted according to the detection result, so that the detection result of the silver wire is within the process requirement range.
The flower plate 6 is used for dividing the propellant slurry which is not degassed into a plurality of fine strips of the propellant slurry under the vacuum condition, and is beneficial to discharging bubbles in the propellant slurry strips. The spray head assembly is used for introducing propellant slurry.
The bottom die 1 is provided with through holes with the diameter of 3.2mm according to the design requirement, and the through holes are used for fixing and positioning the silver wires 9 on the bottom die 1.
The silver wire fixing plate 4 is provided with through holes with the diameter of 3.2mm according to the design requirement, and the through holes are used for fixing and positioning the silver wires 9 on the silver wire fixing plate 4.
The coating sleeve 11 coated with the adhesive is placed in a casting mold, and the silver wire fixing plate 4 is installed according to the positioning requirement.
The specially-made screws are used for connecting and fixing the penetrated silver wires 9 with the bottom die 1 and the silver wire fixing plate 4, wherein the bottom die adopts screws 10 with the diameter of M3 multiplied by 12mm, and the silver wire fixing plate adopts screws 8 with the diameter of M3 multiplied by 30 mm.
The silver wire 9 is used for being embedded into the propellant to improve the burning rate of the propellant, and the diameter of the common specification is phi 0.25 mm. If the quality problems of fracture, bending and deviation of the silver wire 9 in the charge are caused, the charge is directly scrapped due to the fracture of the silver wire, the deflection design of combustion of the silver wire during the charge working can be influenced due to the bending and the deviation of the silver wire, the working reliability of the engine is directly reduced, and even the engine is directly burnt through or exploded during the working.
The tuner is used for detecting the tightness of the threaded silver wire 9, the tuner is clamped on a special screw of the silver wire fixing plate 4 for fixing the silver wire 9, the silver wire 9 is poked and bounced through fingers, the pitch of the tuner is read, the length of the special screw is adjusted according to the detection result, and finally the detection result of the tuner is within the process requirement range.
The pattern plate 6 is used for dividing the propellant slurry which is not degassed into a plurality of slurry strips under the vacuum condition, so that the bubbles in the slurry strips can be discharged conveniently; on the other hand, the position of the silver wire required by design is taken as the boundary line of the pattern plate, so that the flow of the internal and external slurry led into the boundary line from the spray head assembly is kept balanced. The pattern plate 6 is disc-shaped, a plurality of circles of pattern plate holes are uniformly distributed on the pattern plate 6 along the circumferential direction, the propellant slurry processing performance is combined, and the common specification of the aperture of the pattern plate is phi 3.5 mm-phi 4.5 mm.
The use method of the forming device comprises the following steps:
the method comprises the steps of connecting the dies at all sections by flanges, placing a coating sleeve 11 coated with an adhesive into a casting die, connecting the casting die with a silver wire fixing plate 4 according to the positioning requirement, penetrating a silver wire 9 by using a special tool, fixing the silver wire 9 on a bottom die 1 and the silver wire fixing plate 4 by using a special screw respectively, clamping a tuner on the special screw, poking and bouncing the silver wire 9 by using fingers, reading the pitch of the tuner, adjusting the length of the special screw by controlling the pitch of the tuner, clamping the tuner on the special screw again, poking and bouncing the silver wire 9, reading the pitch of the tuner until the pitch is within the process requirement range, connecting the silver wire fixing plate 4 with a flower plate 6 and a spray head 7 by using a screw rod 5, completing casting and assembling according to the requirement, pouring propellant slurry into the coating sleeve 11 coated with the adhesive through the spray head 7 and the flower plate 6 according to the process requirement, placing the casting mold containing the propellant slurry into a certain temperature condition to be cured for a certain time according to the requirement after the casting is completed, and demolding and shaping after curing is finished, so as to prepare the silver-embedded wire freely-filled grain meeting the design requirement.
The forming device is applied to models, the operability and the producibility of the forming device are verified in model application, the quality of the prepared silver-embedded wire freely-filled grain meets the technical acceptance requirements, and the performance of the engine meets the design requirements through multiple ejection tests and flight test examinations of the engine.
Parts of the invention not described in detail are known to the person skilled in the art.
Claims (7)
1. The utility model provides a forming device that silver-embedded silk freely loads grain which characterized in that includes: a casting mould, a coating sleeve (11), a silver wire fixing plate (4), a special screw, a silver wire (9), a tuner, a pattern plate (6), a spray head (7) and a screw rod (5);
the casting mold comprises a bottom mold (1), a middle mold (2) and an upper mold (3), the bottom mold (1), the middle mold (2) and the upper mold (3) are sequentially connected through flanges, and a coating sleeve (11) coated with an adhesive is placed in the casting mold;
the silver wire fixing plate (4) is installed at the end part of the upper die (3), two ends of a silver wire (9) are respectively fixed on the bottom die (1) and the silver wire fixing plate (4) through special screws, and the silver wires (9) are distributed along the circumferential direction by taking the center of a reference circle with a set diameter in the end face of the silver wire fixing plate (4) as a reference;
the tuner is used for detecting the tightness of the silver wire (9), and adjusting the length of a specific screw according to a detection result, so that the tightness detection result of the silver wire (9) is within a process requirement range;
the silver wire fixing plate (4) is connected with the flower plate (6) and the spray head (7) through the screw rod (5), the flower plate (6) is installed at the port of the spray head (7), the flower plate (6) is used for dividing propellant slurry which is not degassed into a plurality of fine strips of the propellant slurry under the vacuum condition, and the spray head (7) is used for leading the propellant slurry in.
2. The forming device for freely filling the embedded silver wire into the explosive column according to claim 1, wherein the bottom die (1), the middle die (2) and the upper die (3) are all cylindrical, the bottom die (1), the middle die (2) and the upper die (3) are coaxially installed, and silver wire installation through holes are arranged on an end cover of the bottom die (1) according to requirements.
3. The forming device of the embedded silver wire free-packed grain as claimed in claim 2, wherein the silver wire fixing plate (4) is cylindrical, and the end cap is provided with the silver wire mounting through holes according to the requirement.
4. The apparatus for forming a silver-embedded wire freely-packed charge column as claimed in claim 3, wherein the diameter of the silver wire (9) is 0.25 mm.
5. The forming device for the silver-embedded wire free-filling grain as claimed in claim 4, wherein the tuner is used for detecting the tightness of the silver wire (9) after threading, the tuner is clamped on a special screw for fixing the silver wire (9) on the silver wire fixing plate (4), the silver wire (9) is poked and shot by fingers, the pitch of the tuner is read, the length of the special screw is adjusted according to the detection result, and finally the detection result of the tuner is within the process requirement range.
6. The forming device of the silver-embedded thread free-packed grain as claimed in claim 5, wherein the pattern plate (6) is disc-shaped, a plurality of circles of pattern plate holes are uniformly distributed on the pattern plate (6) along the circumferential direction, and the aperture of the pattern plate ranges from phi 3.5mm to phi 4.5 mm.
7. The use method of the forming device for freely filling the silver-embedded wire with the explosive column according to any one of claims 1 to 6, characterized by comprising the following steps:
firstly, a bottom die (1), a middle die (2) and an upper die (3) are sequentially connected through flanges to form a casting die, a coating sleeve (11) coated with an adhesive is placed in the casting die, and the casting die is connected with a silver wire fixing plate (4) according to the positioning requirement;
secondly, threading silver wires (9), and fixing the silver wires (9) on the bottom die (1) and the silver wire fixing plate (4) by using special screws respectively;
clamping the tuner on the special screw, poking and bouncing the silver wire (9) through fingers, reading the pitch of the tuner, adjusting the length of the special screw by controlling the pitch of the tuner, clamping the tuner on the special screw again, poking and bouncing the silver wire (9), and reading the pitch of the tuner until the pitch is within the process requirement range;
connecting the silver wire fixing plate (4), the flower plate (6) and the spray head (7) by using a screw (5), completing pouring assembly according to requirements, and then pouring propellant slurry into the coating sleeve (11) coated with the adhesive through the spray head (7) and the flower plate (6) according to process requirements;
and step five, after the pouring is finished, putting the explosive column and the pouring mold together under the set temperature condition, curing according to the requirement, and demolding and shaping after the curing is finished to obtain the silver-embedded wire freely-filled explosive column.
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| CN202010889220.XA CN112253330B (en) | 2020-08-28 | 2020-08-28 | Forming device for freely filling silver-embedded wire into explosive column and using method thereof |
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| CN202010889220.XA CN112253330B (en) | 2020-08-28 | 2020-08-28 | Forming device for freely filling silver-embedded wire into explosive column and using method thereof |
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| CN112253330A true CN112253330A (en) | 2021-01-22 |
| CN112253330B CN112253330B (en) | 2022-04-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114382611A (en) * | 2021-12-10 | 2022-04-22 | 湖北三江航天江河化工科技有限公司 | Preparation method of freely-filled metal wire embedded explosive column |
| CN114539008A (en) * | 2021-11-16 | 2022-05-27 | 上海新力动力设备研究所 | Prestressed silver wire fixing support and forming method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114539008A (en) * | 2021-11-16 | 2022-05-27 | 上海新力动力设备研究所 | Prestressed silver wire fixing support and forming method |
| CN114382611A (en) * | 2021-12-10 | 2022-04-22 | 湖北三江航天江河化工科技有限公司 | Preparation method of freely-filled metal wire embedded explosive column |
| CN114382611B (en) * | 2021-12-10 | 2023-02-03 | 湖北三江航天江河化工科技有限公司 | Preparation method of freely-filled metal wire embedded explosive column |
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| CN112253330B (en) | 2022-04-12 |
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