CN115853674A - Ring-shaped igniter for double-pulse engine - Google Patents
Ring-shaped igniter for double-pulse engine Download PDFInfo
- Publication number
- CN115853674A CN115853674A CN202211600163.4A CN202211600163A CN115853674A CN 115853674 A CN115853674 A CN 115853674A CN 202211600163 A CN202211600163 A CN 202211600163A CN 115853674 A CN115853674 A CN 115853674A
- Authority
- CN
- China
- Prior art keywords
- ignition
- igniter
- engine
- ring
- annular
- 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.)
- Pending
Links
Images
Landscapes
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention belongs to the technical field of solid rocket engines, and particularly relates to an annular igniter for a double-pulse engine. The igniter acts through the action of the electric energy and the ignition tube, the produced flame quickly ignites the ignition charge, the high-temperature gas generated by the ignition charge column combustion flows out through the spray holes under the action of the internal pressure of the igniter to form a high-temperature gas jet flow with a certain length, the high-temperature gas jet flow forms a certain ignition pressure in the rocket engine, the engine charge is reliably ignited, and the igniter has a stable working curve and small fluctuation. The igniter can be suitable for a metal diaphragm type double-pulse engine, the head ignition function is realized, and the hidden danger of igniting impact and crushing explosive to the explosive charging structure is avoided. The invention has the advantages of high space utilization rate, compact structure, safety, reliability and stronger engineering application value.
Description
Technical Field
The invention belongs to the technical field of solid rocket engines, and particularly relates to an annular igniter for a double-pulse engine, which is particularly applied to a solid rocket engine ignition device adopting a metal diaphragm type isolation device.
Background
The double-pulse engine divides a combustion chamber of the solid engine into two parts by using an isolation device, performs two-time starting and shutdown, reasonably distributes thrust and pulse interval time, realizes optimal control of a missile flight trajectory and optimal management of engine energy, and comprehensively improves the performance of various tactical missile systems. The key of the double-pulse engine for realizing shutdown and startup is the design of an ignition device of each pulse, one ignition scheme is that an igniter is fixed in a rear cover of a spray pipe to realize tail ignition, and for the pulse engine with a larger engine length diameter and a larger ignition free volume, the problems of ignition delay, no ignition and the like are easy to occur, and the other ignition scheme is that the igniter is fixed between two pulses to realize head ignition.
Disclosure of Invention
Technical problem to be solved
The technical problem to be solved by the invention is as follows: how to provide a metal diaphragm type double pulse engine uses ring shape point firearm, satisfies pulse engine ignition requirement.
(II) technical scheme
In order to solve the above-described technical problem, the present invention provides a ring igniter for a double pulse engine, the ring igniter including: the box comprises a box bottom 1, a box cover 6, an ignition powder column 3, an aluminum foil 5, an electric ignition tube 7, a compression screw 2 and a fixing screw 4;
the box bottom 1 is made of hard aluminum alloy and is designed into an annular structure, the height of an inner annular groove is equal to that of the ignition powder column 3, and meanwhile, the inner annular wall surface is provided with a flame spray hole 14 to realize directional injection of ignition flame;
the box bottom 1 and the box cover 6 are connected together to form an annular charging space;
the ignition powder columns 3 are arranged in an annular shape, the bottom ends of the ignition powder columns 3 are bonded and fixed in an inner annular groove of the box bottom 1, and an annular cushion pad is arranged at the top end and fixed in an annular space through a box cover 6;
the electric ignition tube 7 is fixed in the annular arrangement of the ignition charge columns 3, and a lead of the electric ignition tube 7 is led out from a hole of the box cover 6 and is sealed and fixed by epoxy glue;
an igniter structure is sealed by an aluminum foil 5, so that dust and moisture are prevented;
the box bottom 1, the ignition powder column 3 and the box cover 6 are connected into a whole by the compression screw 2 and the fixing screw 4, and the relative positions are ensured.
The ignition charge columns 3 are glued in the box cover 6 by using an adhesive, and a certain gap is formed between every two adjacent ignition charge columns 3 to facilitate flame propagation.
Wherein, the diameter and the number of the flame spray holes 14 are determined by the ignition pressure calculation.
After the annular igniter is assembled, a lead connected with the electric ignition tube 7 is led out of the box cover 6, the lead is sealed and fixed by epoxy glue at the position of the lead, and whether the lead is conducted or not is measured.
Wherein, the aluminum foil 5 is wound and bonded on the inner ring wall surface of the box bottom 1 to realize the sealing of the igniter.
The width and the height of the inner ring of the box bottom 1 are slightly larger than the diameter and the height of the ignition charge column 3, so that the ignition charge column 3 and the electric ignition tube 7 can be completely placed.
The box bottom 1 and the box cover 6 are made of 2A12-4 aluminum alloy which is fusible at high temperature, so that the igniter can be burnt during the working process of the engine.
Wherein, the compression screw 2 and the fixing screw 4 adopt high-strength alloy steel.
Wherein, the electric ignition tube 7 is a standard product.
The box cover 6 is formed by machining, and the front surface 61 and the side surface 62 of the box cover are cooperatively compressed and used for fixing the powder columns;
the ignition powder column 3 is formed by pressing a mould, the outer diameter of the powder column is slightly smaller than the size of the assembly surface of the box bottom 1, and the height of the powder column is slightly lower than the height of the inner ring of the box bottom.
(III) advantageous effects
In the annular igniter structure, the igniter is fixed between two pulses to realize head ignition, the structure can utilize a metal isolating device as a fixed base, the igniter is fixed by a screw, the head ignition of an engine is realized, meanwhile, the annular channel does not influence the work of a secondary engine, and the annular igniter structure has the advantages of simple structure, reliable ignition, small size, capability of being burnt and directionally ignited after work, and the like.
Compared with the prior art, the invention has the technical effects that:
(1) An annular igniter used for a metal diaphragm type pulse engine is designed, is fixed on an isolating device of a two-stage engine to realize the head ignition of the one-stage engine, can improve the ignition reliability, has simple structure and high space utilization rate, can be ablated after work,
the directional ignition meets the requirements of engineering application.
(2) The thin aluminum foil is wound, tightly adhered and bonded on the wall surface of the inner ring of the box cover, so that the sealing of the flame spray hole of the igniter is realized.
(3) The ignition powder columns are arranged annularly and in a clearance mode, so that the combustion area of the ignition powder columns is increased, and the ignition reliability is improved.
(4) The box bottom, the box cover and the ignition powder columns are fixed through the two rows of screws, and the structural reliability is improved.
Drawings
FIGS. 1a and 1b are schematic views of a ring igniter configuration.
Fig. 2a and 2b are schematic views of the bottom structure of the case.
FIG. 3a and FIG. 3b are schematic views of the lid structure
Fig. 4 is a schematic view of the structure of the ignition charge pillar.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
In order to solve the above-described technical problem, the present invention provides a ring igniter for a double pulse engine, the ring igniter including: the box comprises a box bottom 1, a box cover 6, an ignition powder column 3, an aluminum foil 5, an electric ignition tube 7, a compression screw 2 and a fixing screw 4;
the box bottom 1 is made of hard aluminum alloy and is designed into an annular structure, the height of an inner annular groove (without wall thickness) is equal to that of the ignition powder column 3, and meanwhile, the wall surface of the inner annular groove is provided with a flame spray hole 14 to realize the directional injection of ignition flame;
the box bottom 1 and the box cover 6 are connected together to form an annular charging space;
the ignition powder columns 3 are arranged in an annular shape, the bottom ends of the ignition powder columns 3 are bonded and fixed in an inner annular groove of the box bottom 1, and an annular cushion pad is arranged at the top end and fixed in an annular space through a box cover 6;
the electric ignition tube 7 is fixed in the annular arrangement of the ignition charge columns 3, and a lead of the electric ignition tube 7 is led out from a hole of the box cover 6 and is sealed and fixed by epoxy glue;
an igniter structure is sealed by an aluminum foil 5, so that dust and moisture are prevented;
the box bottom 1, the ignition powder column 3 and the box cover 6 are connected into a whole by the compression screw 2 and the fixing screw 4, and the relative positions are ensured.
The ignition charge columns 3 are glued in the box cover 6 by using an adhesive, and a certain gap is formed between every two adjacent ignition charge columns 3 to facilitate flame propagation.
The diameter and the number of the fire holes 14 are determined by calculating ignition pressure.
After the annular igniter is assembled, a lead connected with the electric ignition tube 7 is led out of the box cover 6, the lead hole is sealed and fixed by epoxy glue, and whether the lead is conducted or not is measured.
Wherein, the aluminum foil 5 is wound and bonded on the inner ring wall surface of the box bottom 1 to realize the sealing of the igniter.
The width and the height of the inner ring of the box bottom 1 are slightly larger than the diameter and the height of the ignition charge column 3, so that the ignition charge column 3 and the electric ignition tube 7 can be completely placed.
The box bottom 1 and the box cover 6 are made of high-temperature fusible 2A12-4 aluminum alloy, so that the igniter can be fused in the working process of the engine.
Wherein, the compression screw 2 and the fixing screw 4 adopt standard parts of high-strength alloy steel.
Wherein, the electric ignition tube 7 is a standard product.
The box cover 6 is formed by machining, and the front surface 61 and the side surface 62 of the box cover are cooperatively compressed and used for fixing the powder columns;
the ignition powder column 3 is formed by pressing a mould, the outer diameter of the powder column is slightly smaller than the size of the assembly surface of the box bottom 1, and the height of the powder column is slightly lower than the height of the inner ring of the box bottom.
Therefore, the primary igniter is designed into a ring shape, the primary engine works, and the ring-shaped channel of the igniter does not influence the work of the secondary engine.
Example 1
In a preferred embodiment of the invention, shown in FIGS. 1a and 1b, the ring igniter comprises: the box comprises a box bottom 1, a box cover 6, an ignition powder column 3, an aluminum foil 5, an electric ignition tube 7, a compression screw 2 and a fixing screw 4, wherein the box bottom 1 and the box cover 6 are both made of 2A12-4 aluminum alloy, the compression screw 2 and the fixing screw 4 are made of high-strength alloy steel, the electric ignition tube 7 is a standard product, and the compression screw 2 and the fixing screw 4 are made of standard parts. An igniter structure is sealed by an aluminum foil 5, ignition powder columns 3 are arranged in an annular mode, and the bottom ends of the powder columns are fixedly bonded in an inner annular groove of a box bottom 1; the electric ignition tube 7 is fixed in the annular arrangement of the ignition charge column 3, and a lead of the electric ignition tube 7 is led out from a hole of the box cover 6 and is sealed and fixed by epoxy glue; the box bottom 1, the ignition powder column 3 and the box cover 6 are connected into a whole by the compression screw 2 and the fixing screw 4, and the relative positions are ensured.
According to fig. 2a and 2b, in the preferred embodiment of the invention, the case bottom 1 is machined, the holes 11 are igniter set screw holes, the annular igniter is fixed on the isolation device, the holes 12 are compression screw holes, the holes 13 are set screw holes, the holes 14 are fire-blasting holes, directional ignition is realized, ignition impact on the charge surface is avoided, and the diameter and the number of the fire-blasting holes are determined by the ignition pressure.
Referring to figures 3a and 3b, in the preferred embodiment of the invention, the lid 6 is machined so that the front 61 and side 62 of the lid cooperate to hold and secure the charge.
In the preferred embodiment of the invention, as shown in fig. 4, the ignition charge 3 is formed by pressing with a die, the outer diameter of the charge is slightly smaller than the size of the mounting surface of the case bottom, and the height of the charge is slightly lower than the height of the inner ring of the case bottom. The ignition powder columns are arranged in annular gaps, and the bottom ends of the ignition powder columns are fixedly bonded in the box bottom.
The annular igniter for the double-pulse engine provided by the preferred embodiment of the invention has been successfully verified by a plurality of tests, and the annular igniter provided by the invention can meet the reliability requirement of a metal diaphragm type double-pulse engine in the test.
To sum up, the invention belongs to the technical field of solid rocket engines, and particularly relates to an annular igniter for a double-pulse engine. The box bottom is of an annular structure and is connected with the box cover through a compression screw and a fixing screw to form an annular space for placing the ignition charge column and the electric ignition tube, and the width and the height of the annular space are slightly larger than the diameter and the height of the ignition charge column; the ignition powder columns are arranged in an annular gap, the bottom ends of the powder columns are bonded in the box bottom, and annular cushion pads are arranged at the top ends of the powder columns and are compressed and fixed through the box cover; the inner ring wall surface is provided with flame holes, and the diameter and the number of the flame holes are determined by ignition pressure; the aluminum foil is wound and bonded on the inner ring surface of the box bottom in a ring shape to realize the sealing of the flame-throwing hole; the electric igniters are fixed in the annular arrangement of the ignition charge columns, and the wires of the igniters are led out from the box cover holes and sealed and fixed by epoxy glue. The igniter acts through the action of the electric energy and the action of the fire tube, the produced flame quickly ignites the ignition charge, high-temperature gas generated by burning the ignition charge column flows out through the spray holes under the action of the internal pressure of the igniter to form high-temperature gas jet flow with a certain length, the high-temperature gas jet flow forms a certain ignition pressure in the rocket engine, the engine charge is reliably ignited, and the igniter has a stable working curve and small fluctuation. The igniter can be suitable for a metal diaphragm type double-pulse engine, the head ignition function is realized, and the hidden danger of igniting impact and crushing explosive to the explosive charging structure is avoided. The invention has the advantages of high space utilization rate, compact structure, safety, reliability and stronger engineering application value.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A ring igniter for a dual pulse engine, the ring igniter comprising: the box comprises a box bottom (1), a box cover (6), an ignition powder column (3), an aluminum foil (5), an electric ignition tube (7), a compression screw (2) and a fixing screw (4);
the box bottom (1) is made of hard aluminum alloy and is designed into an annular structure, the height of an inner annular groove is equal to that of the ignition powder column (3), and meanwhile, the wall surface of the inner annular groove is provided with a flame spray hole (14) to realize directional injection of ignition flame;
the box bottom (1) and the box cover (6) are connected together to form an annular charging space;
the ignition powder columns (3) are arranged in an annular shape, the bottom ends of the ignition powder columns (3) are bonded and fixed in an inner annular groove of the box bottom (1), an annular cushion pad is arranged at the top end of the ignition powder columns, and the ignition powder columns are fixed in an annular space through a box cover (6);
the electric ignition tube (7) is fixed in the annular arrangement of the ignition charge columns (3), and a lead of the electric ignition tube (7) is led out from a hole of the box cover (6) and is sealed and fixed by epoxy glue;
an igniter structure is sealed by an aluminum foil (5), so that the igniter structure is dustproof and moistureproof;
the box bottom (1), the ignition powder column (3) and the box cover (6) are connected into a whole by the compression screw (2) and the fixing screw (4), and the relative positions are ensured.
2. The ring igniter for dipulse engine as claimed in claim 1, wherein said ignition charge (3) is bonded in said cap (6) by means of an adhesive, and a gap is provided between adjacent ignition charges (3) to facilitate flame propagation.
3. The ring igniter for a dipulse engine as claimed in claim 1, wherein the diameter and number of said flame ports (14) are determined by ignition pressure calculation.
4. The ring igniter of claim 1, wherein after the ring igniter is assembled, the lead wire connected to the squib (7) is drawn out of the cap (6) and sealed and fixed at the lead-out hole by epoxy glue, and whether or not the lead wire is conducted is measured.
5. The ring igniter for the double pulse engine as claimed in claim 1, wherein the aluminum foil (5) is wound and bonded to the inner circumferential wall surface of the case bottom (1) to achieve igniter sealing.
6. The ring igniter for a dipulse engine as claimed in claim 1, wherein the width and height of the inner ring of said case bottom (1) are set to be slightly larger than the diameter and height of the ignition charge (3) so as to be able to completely place the ignition charge (3) and the electric squib (7).
7. The ring igniter for the double-pulse engine as claimed in claim 1, wherein the materials of the box bottom (1) and the box cover (6) are 2A12-4 aluminum alloy which is high-temperature and fusible, so that the igniter can be burnt and melted in the engine working process.
8. Ring igniter for double pulse engines according to claim 1, characterized in that the compression screws (2) and the fixing screws (4) are made of high-strength alloy steel.
9. Ring igniter for a double pulse engine according to claim 1, characterised in that the electropyrotechnic tube (7) is of the standard type.
10. The ring igniter for a dipulse engine as claimed in claim 1, wherein said cap (6) is machined, the front surface (61) and the side surface (62) of the cap co-operating to compress and fix the ignition charge;
the ignition powder column (3) is formed by pressing a mould, the outer diameter of the powder column is slightly smaller than the size of the assembly surface of the box bottom (1), and the height of the powder column is slightly lower than the height of the inner ring of the box bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211600163.4A CN115853674A (en) | 2022-12-13 | 2022-12-13 | Ring-shaped igniter for double-pulse engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211600163.4A CN115853674A (en) | 2022-12-13 | 2022-12-13 | Ring-shaped igniter for double-pulse engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115853674A true CN115853674A (en) | 2023-03-28 |
Family
ID=85672555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211600163.4A Pending CN115853674A (en) | 2022-12-13 | 2022-12-13 | Ring-shaped igniter for double-pulse engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115853674A (en) |
-
2022
- 2022-12-13 CN CN202211600163.4A patent/CN115853674A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107269424B (en) | Secondary ignition structure of solid rocket engine | |
| WO1989001601A1 (en) | An ignition system and a method for the initiation thereof | |
| CN111734526B (en) | Firer actuator adopting low-detonation-velocity explosive charging to reduce subsidiary impact and pollution | |
| CN104791135B (en) | Solid-liquid rocket lighter | |
| US11173868B2 (en) | Gas generator | |
| US4807532A (en) | Base bleed unit | |
| US20190176745A1 (en) | Gas generator | |
| US20160115905A1 (en) | Two-pulse gas generator and operation method thereof | |
| CN101825419A (en) | Exploding device with multi-varying section and detonator applying same | |
| CN111305973B (en) | Small solid rocket engine ignition device | |
| CN115853674A (en) | Ring-shaped igniter for double-pulse engine | |
| US4282814A (en) | Dual-end warhead initiation system | |
| CN104100411B (en) | A kind of double pulsing gasifier section of parallel chamber structure | |
| CN108639391B (en) | Gas generator for rapid actuation | |
| US4711177A (en) | Auxiliary booster | |
| JP4619813B2 (en) | Two-stage thrust rocket motor | |
| CN113606057A (en) | Axial sliding type partition plate suitable for multi-pulse solid rocket engine | |
| RU2400693C1 (en) | Electric igniter | |
| US3138927A (en) | Gas generator | |
| CN103499253B (en) | A kind of Miniature detonator of low firing voltage | |
| CN116220944B (en) | Solid engine and rocket | |
| CN103499252B (en) | The Miniature detonator that a kind of low firing voltage and high-power export | |
| CN103499254B (en) | A kind of Miniature detonator of low firing voltage | |
| CN221349885U (en) | Explosion-proof type detonating device and initiating explosive device | |
| CN213799558U (en) | Pyrotechnic gas generator for safety airbag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |