CN220955855U - Solid engine ignition device integrated with pressure measuring interface - Google Patents
Solid engine ignition device integrated with pressure measuring interface Download PDFInfo
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- CN220955855U CN220955855U CN202323056253.4U CN202323056253U CN220955855U CN 220955855 U CN220955855 U CN 220955855U CN 202323056253 U CN202323056253 U CN 202323056253U CN 220955855 U CN220955855 U CN 220955855U
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- ignition
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- accommodating cavity
- pressure measuring
- channel
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- 239000007787 solid Substances 0.000 title claims abstract description 70
- 239000000843 powder Substances 0.000 claims abstract description 69
- 238000002485 combustion reaction Methods 0.000 claims description 29
- 238000007789 sealing Methods 0.000 claims description 10
- 238000009530 blood pressure measurement Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 208000031872 Body Remains Diseases 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The application relates to the field of solid engines, in particular to a solid engine ignition device integrated with a pressure measuring interface, which comprises: the ignition device comprises an ignition device body, a cable interface, a pressure measuring channel, an ignition powder box, a tube body, an ignition powder ring and a pressure measuring interface. The application can reduce the structural weight of the solid engine, simplify the processing technology of the solid engine and reduce the production cost of the solid engine.
Description
Technical Field
The application relates to the field of solid engines, in particular to a solid engine ignition device integrated with a pressure measuring interface.
Background
The igniter is used as a starting device of the solid rocket engine, when receiving ignition current, the ignition head heats the heat-sensitive bridge wire to ignite the heat-sensitive powder, the flame of the heat-sensitive powder ignites the reinforcing powder, the reinforcing powder ignites the ignition powder, the ignition powder burns rapidly to generate high-temperature high-pressure gas to fill the combustion chamber inner cavity of the solid rocket engine, high-temperature fuel gas contacts with the powder surface of the main powder column in the combustion chamber inner cavity, heat is transferred to the main powder column through convection, heat conduction and radiation, the main powder column is ignited, the blocking cover for closing the combustion chamber inner cavity is exploded and opened simultaneously, fuel gas in the combustion chamber inner cavity is sprayed out through the spray pipe to generate thrust, at the moment, under ultrahigh internal pressure load, if leakage occurs at other parts except the spray pipe, engine faults are instantaneously caused, serious consequences are caused, and strict airtight detection can be carried out after the assembly of each solid rocket engine.
However, the conventional igniter is fixed on the front end enclosure of the combustion chamber of the solid rocket engine through threaded connection, and the airtight detection interface for airtight detection is also positioned at the front end enclosure of the combustion chamber of the solid rocket engine.
Therefore, how to reduce the structural weight of the solid rocket engine and reduce the processing difficulty and the production cost of the solid rocket engine is a technical problem which needs to be solved by the technicians in the field at present.
Disclosure of utility model
The application provides a solid engine ignition device integrated with a pressure measuring interface, which is used for reducing the structural weight of a solid engine, simplifying the processing technology of the solid engine and reducing the production cost of the solid engine.
In order to solve the technical problems, the application provides the following technical scheme:
A solid engine ignition integrated with a pressure tap, comprising: the ignition device comprises an ignition device body, a cable interface, a pressure measuring channel, an ignition powder box, a tube body, an ignition powder ring and a pressure measuring interface; wherein, the ignition device body is internally provided with an ignition channel and an ignition cartridge accommodating cavity; the front end of the ignition channel extends forwards to penetrate to the outside, the rear end of the ignition channel extends backwards to be communicated to the front end of the ignition box accommodating cavity, and an ignition head thermosensitive bridge wire, a thermosensitive powder and an ignition reinforcing powder are sequentially arranged in the ignition channel from front to back; the rear end of the ignition powder box accommodating cavity extends backwards to penetrate through the rear end of the ignition device body, and the ignition powder box is arranged in the ignition powder box accommodating cavity; the cable interface is provided with a through cable channel for passing through and fixing the ignition cable, and is fixed on the outer surface of the ignition device body, and the cable channel is communicated with the front end of the ignition channel; the inner part of the tube body is provided with an ignition powder ring accommodating cavity, and the side wall of the tube body is provided with an ignition hole communicated with the ignition powder ring accommodating cavity and the outside; the front end of the ignition powder ring accommodating cavity extends forwards to penetrate the front end of the pipe body, and the ignition powder ring is arranged in the ignition powder ring accommodating cavity; the front end of the tube body is fixedly connected with the rear end of the ignition device body, and the ignition charge ring accommodating cavity is communicated with the ignition charge box accommodating cavity; the ignition device body is used for being inserted into an ignition device assembly hole on a front sealing head of a combustion chamber of the solid engine, and the pipe body extends into the combustion chamber of the solid engine; the pressure measuring channel penetrates through the ignition device body from front to back, and the rear end of the pressure measuring channel is used for being communicated to the combustion chamber of the solid engine; the pressure measuring interface is provided with a through pipeline channel for passing through and fixing the pressure measuring pipeline, and is fixed on the outer surface of the ignition device body, and the pipeline channel is communicated with the front end of the pressure measuring channel.
The solid engine ignition device with integrated pressure tap as described above, wherein the wall thickness of the tube body preferably gradually decreases from front to back.
The solid engine ignition integrated with the pressure tap as described above, wherein it is preferable that the front end of the ignition passage communicates from the side wall of the ignition body to the outside.
The solid engine ignition device integrated with the pressure measurement interface as described above, wherein preferably, the part, close to the rear end, of the outer side wall of the ignition device body is provided with a connecting external thread, the part, close to the front end, of the inner side wall of the pipe body is provided with a connecting internal thread, and the front end of the pipe body is fixedly connected with the rear end of the ignition device body by matching the connecting internal thread of the pipe body with the connecting external thread of the ignition device body.
The solid engine ignition device integrated with the pressure measuring interface as described above, wherein preferably, the part, close to the middle, of the outer side wall of the ignition device body is provided with a fixed external thread, the ignition device assembly hole of the front end enclosure of the combustion chamber is internally provided with a fixed internal thread, and the fixed connection between the ignition device body and the front end enclosure of the combustion chamber is realized through the fixed external thread of the ignition device body and the fixed internal thread in the ignition device assembly hole.
The solid engine ignition device integrated with the pressure measuring interface as described above, wherein it is preferable that a portion of the outer side wall of the ignition device body near the middle is thicker than a portion of the outer side wall of the ignition device body near the rear end so that a stepped surface is formed between the portion of the outer side wall of the ignition device body near the middle and the portion of the outer side wall of the ignition device body near the rear end.
The solid engine ignition integrated with the pressure tap as described above, wherein the step surface is preferably perpendicular to the outer sidewall of the ignition body.
The solid engine ignition integrated with the pressure tap as described above, wherein it is preferable that the front end of the pressure tap extends forward through the front end of the ignition body, and the rear end of the pressure tap extends rearward through a stepped surface between a portion of the outer side wall of the ignition body near the middle and a portion of the outer side wall of the ignition body near the rear end.
A solid engine ignition integrated with a pressure tap as described above, wherein preferably further comprises: a baffle and a sealing membrane; the baffle plate is provided with a through hole which penetrates through the front and the rear, is arranged in the ignition powder box accommodating cavity, is positioned at the rear end of the ignition powder box and is used for fixing the fixed point of the ignition powder box; the sealing diaphragm is positioned between the rear end of the baffle plate and the front end of the ignition charge ring so as to ensure the sealing in the tube body.
The solid engine ignition device integrated with the pressure measuring interface as described above, wherein it is preferable that the ignition charge ring accommodating cavity of the tube body is internally provided with a plurality of ignition charge rings from front to back in sequence, and a buffer cotton sheet is arranged between two adjacent ignition charge rings for separating the adjacent ignition charge rings.
Against the background art, the application provides
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a front view of a solid engine ignition device with an integrated pressure tap provided by the present application;
fig. 2 is a left side view of the solid engine ignition device with integrated pressure tap provided by the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. In addition, spatial relationship terms such as "upper", "lower", "left", "right", "front", "rear", and the like are used for convenience of description to explain a positional relationship between two components. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.
As shown in fig. 1, the present application provides a solid engine ignition device integrated with a pressure measurement interface, comprising: the ignition device comprises an ignition device body 1 (for example, high-quality alloy steel is adopted), a cable connector 2, a pressure measuring channel 3, an ignition powder box 4, a tube body 7 (for example, hard aluminum alloy is adopted), an ignition powder ring 8 and a pressure measuring connector 10.
Wherein, the ignition device body 1 is internally provided with an ignition channel and an ignition cartridge accommodating cavity; the front end of the ignition channel extends forwards to penetrate to the outside, the rear end of the ignition channel extends backwards to be communicated to the front end of the ignition box accommodating cavity, and an ignition head thermosensitive bridge wire, a thermosensitive powder and an ignition reinforcing powder are sequentially arranged in the ignition channel from front to back; the rear end of the ignition cartridge accommodating chamber extends rearward through the rear end of the ignition device body 1, and the ignition cartridge 4 is mounted into the ignition cartridge accommodating chamber. Optionally, the width of the ignition cartridge receiving cavity is wider than the width of the ignition channel. Still alternatively, the front end of the ignition passage communicates from the side wall of the ignition device body 1 to the outside.
The cable interface 2 has a through cable passage for passing through and fixing the ignition cable, and the cable interface 2 is fixed to the outer surface of the ignition device body 1, the cable passage communicates with the front end of the ignition passage so that the ignition cable can extend to the ignition passage, and when the ignition current of the ignition cable is received, the ignition head heat-sensitive bridge wire heats to ignite the heat-sensitive powder, the flame of the heat-sensitive powder ignites the reinforcing powder, and the reinforcing powder ignites the ignition powder particles of the ignition powder box 4.
The tube body 7 is internally provided with an ignition charge ring accommodating cavity; the front end of the ignition powder ring accommodating cavity extends forwards to penetrate the front end of the pipe body 7, and the ignition powder ring 8 is arranged in the ignition powder ring accommodating cavity; and the front end of the tube body 7 is fixedly connected with the rear end of the ignition device body 1, and the ignition powder ring accommodating cavity is communicated with the ignition powder box accommodating cavity, so that high-temperature and high-pressure gas is generated by the ignition powder particles of the ignition powder box 4, and the ignition powder ring 8 is ignited. Optionally, the part of the outer side wall of the ignition device body 1 near the rear end is provided with a connecting external thread, the part of the inner side wall of the tube body 7 near the front end is provided with a connecting internal thread, and the front end of the tube body 7 is fixedly connected with the rear end of the ignition device body 1 through the matching of the connecting internal thread of the tube body 7 and the connecting external thread of the ignition device body 1. In addition, the wall thickness of the tube body 7 gradually decreases from front to back, that is: the pipe body 7 can adopt the design of variable wall thickness, and the pipe body 7 begins to melt from the thin wall position when the solid engine works, avoids the condition that the thrust fluctuation of the solid engine is caused by the flying-out of the pipe body 7 from the middle fusing.
The ignition device assembly hole is formed in the front end enclosure of the combustion chamber of the solid engine, the ignition device body 1 is used for being inserted and fixed into the ignition device assembly hole, the pipe body 7 stretches into the combustion chamber of the solid engine, in addition, the side wall of the pipe body 7 is provided with an ignition hole communicated with the ignition powder ring accommodating cavity and the outside, high-temperature fuel gas is generated after the ignition powder ring 8 is ignited, and the ignition powder enters the combustion chamber of the solid engine through the ignition hole in the pipe body 7 to ignite main charges arranged in the combustion chamber. Optionally, a part, close to the middle, of the outer side wall of the ignition device body 1 is provided with a fixed external thread, an ignition device assembly hole of the front end enclosure of the combustion chamber is internally provided with a fixed internal thread, and the ignition device body 1 is fixedly connected with the front end enclosure of the combustion chamber through the fixed external thread of the ignition device body 1 and the fixed internal thread in the ignition device assembly hole. Still alternatively, the portion of the outer side wall of the ignition device body 1 near the middle is thicker than the portion of the outer side wall of the ignition device body 1 near the rear end, so that a step surface is formed between the portion of the outer side wall of the ignition device body 1 near the middle and the portion of the outer side wall of the ignition device body 1 near the rear end, so that the portion of the outer side wall of the ignition device body 1 near the rear end extends completely into the combustion chamber of the solid engine. Alternatively, the step surface is perpendicular to the outer side wall of the ignition device body 1.
In addition, the ignition device body 1 is further provided with a pressure measuring channel 3 which is communicated with the combustion chamber of the solid engine in a front-back mode, and the rear end of the pressure measuring channel 3 is used for being communicated with the combustion chamber of the solid engine, so that gas can be filled into the combustion chamber of the solid engine through the pressure measuring channel 3 when the solid engine is subjected to airtight detection, and the gas pressure in the combustion chamber of the solid engine can be transmitted to an external pressure sensor through the pressure measuring channel 3 when the solid engine is subjected to pressure measurement in a ground test. Optionally, the front end of the pressure measuring channel 3 extends forward through the front end of the ignition body 1, and the rear end of the pressure measuring channel 3 extends rearward through a step surface between a portion of the outer side wall of the ignition body 1 near the middle and a portion of the outer side wall of the ignition body 1 near the rear end. Optionally, the rear end of the pressure measuring channel 3 is close to the portion of the outer side wall of the ignition device body 1 close to the rear end, so that the rear end of the pressure measuring channel 3 is communicated into the combustion chamber of the solid engine.
The pressure tap 10 has a through line passage for passing through and fixing the pressure tap 10, and the pressure tap 10 is fixed to the outer surface of the ignition body 1, the line passage communicating with the front end of the pressure passage 3, thereby transmitting pressure to an external pressure sensor through the line passage to achieve airtight detection or pressure test.
On the basis, the solid engine ignition device integrated with the pressure measurement interface further comprises: a baffle 5 and a sealing membrane 6; the baffle plate 5 is provided with a through hole which penetrates through the front and the rear, and the baffle plate 5 is arranged in the ignition cartridge accommodating cavity and positioned at the rear end of the ignition cartridge 4 and is used for fixedly fixing the ignition cartridge 4; the sealing membrane 6 is located between the rear end of the baffle 5 and the front end of the ignition charge ring 8, thereby ensuring a seal within the tube 7.
In addition, a plurality of ignition powder rings 8 are installed in proper order from front to back in the ignition powder ring accommodation cavity of the tube body 7, and a buffer cotton sheet 9 is arranged between two adjacent ignition powder rings 8 and used for separating the adjacent ignition powder rings 8, so that accidental ignition caused by mutual friction between the ignition powder rings 8 during vibration test is avoided, and meanwhile, a buffer effect is also achieved, and the ignition powder rings 8 are prevented from being broken.
According to the application, the pressure measuring channel for airtight detection and pressure detection is integrated on the solid engine ignition device, so that the pressure measuring hole and the air-tightness detection hole do not need to be designed on the front end socket of the combustion chamber of the solid engine, the structural weight of the solid engine is further reduced, the processing technology of the solid engine is simplified, and the production cost of the solid engine is reduced; in addition, the tube body adopts a wall thickness-variable design, namely the wall thickness of the tube body is gradually reduced from front to back, so that thrust fluctuation of a solid engine caused by flying out of molten state tube body remains of the ignition device is avoided; in addition, the application is applicable to medium and large solid engines.
It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. A solid engine ignition device integrated with a pressure tap, comprising: the ignition device comprises an ignition device body, a cable interface, a pressure measuring channel, an ignition powder box, a tube body, an ignition powder ring and a pressure measuring interface;
Wherein, the ignition device body is internally provided with an ignition channel and an ignition cartridge accommodating cavity; the front end of the ignition channel extends forwards to penetrate to the outside, the rear end of the ignition channel extends backwards to be communicated to the front end of the ignition box accommodating cavity, and an ignition head thermosensitive bridge wire, a thermosensitive powder and an ignition reinforcing powder are sequentially arranged in the ignition channel from front to back; the rear end of the ignition powder box accommodating cavity extends backwards to penetrate through the rear end of the ignition device body, and the ignition powder box is arranged in the ignition powder box accommodating cavity;
The cable interface is provided with a through cable channel for passing through and fixing the ignition cable, and is fixed on the outer surface of the ignition device body, and the cable channel is communicated with the front end of the ignition channel;
The inner part of the tube body is provided with an ignition powder ring accommodating cavity, and the side wall of the tube body is provided with an ignition hole communicated with the ignition powder ring accommodating cavity and the outside; the front end of the ignition powder ring accommodating cavity extends forwards to penetrate the front end of the pipe body, and the ignition powder ring is arranged in the ignition powder ring accommodating cavity; the front end of the tube body is fixedly connected with the rear end of the ignition device body, and the ignition charge ring accommodating cavity is communicated with the ignition charge box accommodating cavity;
The ignition device body is used for being inserted into an ignition device assembly hole on a front sealing head of a combustion chamber of the solid engine, and the pipe body extends into the combustion chamber of the solid engine;
the pressure measuring channel penetrates through the ignition device body from front to back, and the rear end of the pressure measuring channel is used for being communicated to the combustion chamber of the solid engine;
the pressure measuring interface is provided with a through pipeline channel for passing through and fixing the pressure measuring pipeline, and is fixed on the outer surface of the ignition device body, and the pipeline channel is communicated with the front end of the pressure measuring channel.
2. The solid state engine ignition integrated with a pressure tap of claim 1 wherein the wall thickness of the tube body tapers from front to back.
3. The solid state engine ignition apparatus of claim 1 or 2, wherein the front end of the ignition passage communicates from the side wall of the ignition apparatus body to the outside.
4. The solid engine ignition apparatus of the integrated pressure measurement interface according to claim 1 or 2, wherein the portion of the outer side wall of the ignition apparatus body near the rear end has a connecting external thread, the portion of the inner side wall of the pipe body near the front end has a connecting internal thread, and the front end of the pipe body is fixedly connected with the rear end of the ignition apparatus body by the cooperation of the connecting internal thread of the pipe body and the connecting external thread of the ignition apparatus body.
5. The solid engine ignition apparatus integrated with the pressure measurement interface according to claim 4, wherein the part, close to the middle, of the outer side wall of the ignition apparatus body is provided with a fixed external thread, the ignition apparatus assembly hole of the front end enclosure of the combustion chamber is internally provided with a fixed internal thread, and the fixed connection between the ignition apparatus body and the front end enclosure of the combustion chamber is realized through the fixed external thread of the ignition apparatus body and the fixed internal thread in the ignition apparatus assembly hole.
6. The solid state engine ignition apparatus of integrated pressure tap of claim 5 wherein the portion of the outer sidewall of the ignition apparatus body near the middle is thicker than the portion of the outer sidewall of the ignition apparatus body near the rear end such that a step surface is formed between the portion of the outer sidewall of the ignition apparatus body near the middle and the portion of the outer sidewall of the ignition apparatus body near the rear end.
7. The solid state engine ignition integrated with a pressure tap of claim 6 wherein the step surface is perpendicular to the outer sidewall of the ignition body.
8. The solid engine ignition apparatus of claim 6, wherein the front end of the pressure measuring channel extends forwardly through the front end of the ignition body, and the rear end of the pressure measuring channel extends rearwardly through a stepped surface between a portion of the outer sidewall of the ignition body proximate the middle and a portion of the outer sidewall of the ignition body proximate the rear end.
9. The solid state engine ignition integrated with a pressure tap of claim 1 or 2, further comprising: a baffle and a sealing membrane;
The baffle plate is provided with a through hole which penetrates through the front and the rear, is arranged in the ignition powder box accommodating cavity, is positioned at the rear end of the ignition powder box and is used for fixing the fixed point of the ignition powder box;
The sealing diaphragm is positioned between the rear end of the baffle plate and the front end of the ignition charge ring so as to ensure the sealing in the tube body.
10. The solid engine ignition apparatus of the integrated pressure measurement interface according to claim 1 or 2, wherein a plurality of ignition charge rings are sequentially installed in the ignition charge ring accommodating cavity of the pipe body from front to back, and a buffer cotton sheet is arranged between two adjacent ignition charge rings for separating the adjacent ignition charge rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323056253.4U CN220955855U (en) | 2023-11-10 | 2023-11-10 | Solid engine ignition device integrated with pressure measuring interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323056253.4U CN220955855U (en) | 2023-11-10 | 2023-11-10 | Solid engine ignition device integrated with pressure measuring interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220955855U true CN220955855U (en) | 2024-05-14 |
Family
ID=91021616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323056253.4U Active CN220955855U (en) | 2023-11-10 | 2023-11-10 | Solid engine ignition device integrated with pressure measuring interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220955855U (en) |
-
2023
- 2023-11-10 CN CN202323056253.4U patent/CN220955855U/en active Active
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