CN109736964B - Sliding throwable throat adjustable spray pipe - Google Patents
Sliding throwable throat adjustable spray pipe Download PDFInfo
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- CN109736964B CN109736964B CN201811494245.9A CN201811494245A CN109736964B CN 109736964 B CN109736964 B CN 109736964B CN 201811494245 A CN201811494245 A CN 201811494245A CN 109736964 B CN109736964 B CN 109736964B
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Abstract
A sliding throwable throat adjustable nozzle relates to the technical field of ramjet engines; the device comprises a throat liner component, a supporting slide rail, a supporting block, a boosting bullet, a clamping ring, a nozzle body and a clamping ring locker; wherein, the nozzle body is a hollow cylinder structure which is horizontally arranged; the supporting slide rail is coaxially and fixedly arranged at the outlet end of the spray pipe body; the throat insert component is arranged on the track inside the supporting slide rail, so that the throat insert component can horizontally move along the axial direction of the supporting slide rail; the supporting block is fixedly arranged on the inner side wall of the throat liner component; the boosting bullet extends into the spray pipe body from the axial inlet end of the spray pipe body, and the bullet head of the boosting bullet is in contact with the throat liner assembly through the supporting block; the snap ring locker is disposed in the inner wall of the spout body; the clamping ring is fixedly arranged on the inner wall of the spray pipe body, and the position of the clamping ring corresponds to the clamping ring locking device; the invention realizes the requirement of large regulation ratio which can be met by the conventional fish scale adjustable spray pipe.
Description
Technical Field
The invention relates to the technical field of ramjet engines, in particular to a sliding throwable throat adjustable nozzle.
Background
The ramjet engine works in a multi-working-condition high-Mach number environment, the jet pipe is required to work in a large pressure drop ratio range and can adapt to large-amplitude change of flow, and therefore the throat part of the jet pipe can be effectively adjusted according to changes of flight states and engine working states. With the continuous improvement of the requirement on the performance of the engine, the requirement on the adjustment ratio of the throat part of the adjustable jet pipe of the engine is higher and higher.
And, along with the development of the ramjet, the ramjet combustion chamber and boosting bullet integration are constantly deepened, and the boosting bullet dives into the ramjet combustion chamber and is a main compression space technical approach, and its nozzle throat needs to satisfy three throat stations: and (3) installing the operation process of the throat station (maximum throat) → small throat station (minimum throat) → large throat station (second maximum throat). In order to meet the requirement that the boosting bomb smoothly submerges into the combustion chamber of the ramjet engine, the diameter of the throat part of the spray pipe of the ramjet engine can be as large as possible when the boosting bomb is initially installed, and the requirement of the adjustable spray pipe throat part adjusting ratio of the ramjet engine is further increased.
The large nozzle throat regulation ratio makes the design of the scale-adjustable nozzle difficult, and the scale-adjustable nozzle with the large regulation ratio has the problem of excessive staggered interference of the scale when the scale-adjustable nozzle with the large regulation ratio is in a small throat by taking the maximum throat as a design reference; with the smallest throat as the design reference, the problem of separation of the sheet body in the case of a large throat occurs. Thus, for ramjet variable nozzle, a large throat turndown ratio is a design challenge.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides the adjustable spray pipe with the sliding and throwable throat part, and meets the requirement of large regulation ratio which can be met by the conventional adjustable spray pipe with the fish scale.
The above purpose of the invention is realized by the following technical scheme:
a sliding throwable throat adjustable nozzle comprises a throat lining component, a supporting slide rail, a supporting block, a boosting bullet, a clamping ring, a nozzle body, a clamping ring locker and a combustion chamber; wherein, the nozzle body is a hollow cylinder structure which is horizontally arranged; the combustion chamber is coaxially and fixedly arranged at the outlet end of the spray pipe body; the sliding rail is fixedly arranged on the inner wall of the combustion chamber; the throat insert component is arranged on the track inside the supporting slide rail, so that the throat insert component can horizontally move along the axial direction of the supporting slide rail; the supporting block is fixedly arranged on the inner side wall of the throat liner component; gluing the outer wall of the supporting block; the boosting bullet extends into the spray pipe body from the axial inlet end of the spray pipe body, and the bullet head of the boosting bullet is in contact with the throat liner assembly through the supporting block; the snap ring locker is disposed in the inner wall of the spout body; the clamping ring is fixedly arranged on the inner wall of the spray pipe body, and the position of the clamping ring corresponds to the clamping ring locking device.
In the sliding disposable throat adjustable nozzle, the throat insert assembly comprises a large throat insert and a small throat insert; wherein, the small throat liner is in a conical section structure; the large throat insert is sleeved on the outer wall of the small throat insert; the supporting block is fixedly arranged on the inner wall of the small throat insert.
In the sliding disposable throat adjustable nozzle, the outer wall of the large throat insert is of a cylindrical structure; the outer wall of the large throat insert is connected with the supporting slide rail in a sliding manner; the inner wall of the large throat insert is of a double-conical surface structure; one conical surface has the same taper with the outer wall of the small throat insert, and the inner wall of the large throat insert and the outer wall of the small throat insert are installed in a matched mode. The outer wall of the large throat insert is provided with a groove.
In the sliding disposable throat adjustable nozzle, the large throat lining and the small throat lining are bonded through high-temperature melting glue; the outer wall of the large throat insert is provided with a groove.
In the sliding disposable throat adjustable nozzle, the supporting slide rail and the supporting block are made of combustible hard foam materials.
In the adjustable jet pipe with the sliding and jettisonable throat, when the boosting bullet is plugged into the jet pipe body, the head end of the boosting bullet is bonded with the supporting block; the boosting bullet pushes the throat liner assembly to horizontally move along the support slide rail through the support block until the tail end of the boosting bullet is in limit fit with the axial inlet end of the nozzle body, and the assembly is completed.
In the sliding throwable throat adjustable nozzle, when the combustion chamber works, the combustion chamber outputs airflow to the nozzle body; the throat liner assembly and the boosting bullet are pushed by the airflow to move towards the axial inlet end of the spray pipe body along the supporting slide rail; until the throat insert component moves to the position of the clamping ring; the position limitation and stop of the throat insert assembly are realized by locking the clamping ring through the clamping ring locking device; the boosting bullet tears the rubber layer of the supporting block under the pressure difference of external air flow and completely exits from the engine jet pipe.
According to the sliding disposable throat adjustable nozzle, the inner wall of the nozzle body is provided with the elastic sheet; the position of the elastic sheet corresponds to the position of the groove on the outer wall of the large throat insert.
In the sliding disposable throat adjustable nozzle, when the station is switched to a large throat station, the elastic sheet extends out of the inner wall of the nozzle body and is embedded into the groove in the outer wall of the large throat insert, so that the large throat insert is fixed and limited; the heat generated by the working of the combustion chamber melts the high-temperature melting glue between the large throat insert and the small throat insert, the large throat insert is separated from the small throat insert, and meanwhile, the snap ring locking device unlocks the snap ring; the small throat insert and the snap ring are separated from the nozzle body under the pushing of the airflow.
Compared with the prior art, the invention has the following advantages:
(1) the invention can meet the requirement of large regulation ratio which can not be met by the conventional fish scale adjustable spray pipe, so that the ramjet and the booster bomb are highly integrated, the space is saved, and the miniaturization of the ramjet can be realized;
(2) when the combustion chamber works, the retainer ring is locked by the retainer ring locking device to realize the limiting and stopping of the throat insert assembly; the boosting bullet tears the rubber layer of the supporting block under the pressure difference of external airflow and completely exits from the engine spray pipe; the throat insert component is completely reserved, and the boosting and ejecting separation is safely realized;
(3) when the large throat part is switched to a large throat station, the elastic sheet extends out of the inner wall of the nozzle body and is embedded into the groove in the outer wall of the large throat lining, so that the large throat lining is fixed and limited; the large throat insert is separated from the small throat insert, and meanwhile, the clamp ring locking device unlocks the clamp ring; the small throat insert and the snap ring are separated from the nozzle body under the pushing of the airflow; not only the large throat insert is completely reserved, but also the small throat insert and the snap ring are safely separated.
Drawings
FIG. 1 is a schematic view of a variable nozzle of the present invention;
FIG. 2 is a schematic view of the large throat insert of the present invention;
FIG. 3 is a schematic view of the small throat insert of the present invention;
FIG. 4 is a schematic view of the spring plate embedded in the groove of the large throat insert according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples:
the invention provides a sliding throwable throat adjustable spray pipe which can meet the requirement of large regulation ratio which cannot be met by the conventional fish scale adjustable spray pipe, so that a ramjet and a booster bomb are highly integrated, the space is saved, and the miniaturization of the ramjet can be realized.
As shown in fig. 1, which is an overall schematic view of a variable nozzle, it can be known that a sliding disposable throat variable nozzle comprises a throat lining assembly 1, a supporting slide rail 2, a supporting block 3, a boosting bullet 4, a snap ring 5, a nozzle body 6, a snap ring locker 7 and a combustion chamber 8; wherein, the nozzle body 6 is a hollow cylinder structure which is horizontally arranged; the combustion chamber 8 is coaxially and fixedly arranged at the outlet end of the nozzle body 6; the slide rail 2 is fixedly arranged on the inner wall of the combustion chamber 8; the throat insert component 1 is arranged on a track inside the supporting slide rail 2, so that the throat insert component 1 can horizontally move along the axial direction of the supporting slide rail 2; the supporting block 3 is fixedly arranged on the inner side wall of the throat liner component 1; gluing the outer wall of the supporting block 3; the boosting bullet 4 extends into the spray pipe body 6 from the axial inlet end of the spray pipe body 6, and the bullet of the boosting bullet 4 is in contact with the throat liner assembly 1 through the supporting block 3; a snap ring locker 7 is provided in the inner wall of the spout body 6; the snap ring 5 is fixedly mounted on the inner wall of the nozzle body 6, and the position of the snap ring 5 corresponds to the snap ring locker 7. The supporting slide rail 2 and the supporting block 3 are made of combustible hard foam materials. After the engine combustion chamber is ignited to work, the fuel can be burnt out.
As shown in figure 2, the large throat insert is schematic, and as shown in figure 3, the small throat insert is schematic, and as can be seen from the figure, the throat insert component 1 comprises a large throat insert 1-1 and a small throat insert 1-2; wherein, the small throat insert 1-2 is in a conical section structure; the large throat insert 1-1 is sleeved on the outer wall of the small throat insert 1-2; the supporting block 3 is fixedly arranged on the inner wall of the small throat insert 1-2.
Wherein, the outer wall of the large throat insert 1-1 is a cylindrical structure; the outer wall of the large throat insert 1-1 is connected with the supporting slide rail 2 in a sliding way; the inner wall of the large throat insert 1-1 is of a biconical surface structure; one conical surface has the same taper with the outer wall of the small throat insert 1-2, and the matching installation of the inner wall of the large throat insert 1-1 and the outer wall of the small throat insert 1-2 is realized. The outer wall of the large throat insert 1-1 is provided with a groove. The large throat insert 1-1 and the small throat insert 1-2 are bonded through high-temperature melting glue; the glue layer fails when the high-temperature melting glue is heated to over 500 ℃. The outer wall of the large throat insert 1-1 is provided with a groove.
When the boosting bullet 4 is plugged into the spray pipe body 6, the bullet end of the boosting bullet 4 is bonded with the supporting block 3; the boosting bullet 4 pushes the throat insert component 1 to horizontally move along the supporting slide rail 2 through the supporting block 3 until the tail end of the boosting bullet 4 is in limit fit with the axial inlet end of the nozzle body 6, and the assembly is completed.
When the combustion chamber 8 works, the combustion chamber 8 outputs airflow to the nozzle body 6; the throat liner assembly 1 and the boosting bullet 4 are pushed by airflow to move towards the axial inlet end of the nozzle body 6 along the support slide rail 2; until the throat insert component 1 moves to the position of the clamping ring 5; the clamp ring 5 is locked by the clamp ring locking device 7, the clamp ring 5 can prevent the small throat insert from sliding towards the rear of the airflow, and the limiting and stopping of the throat insert component 1 are realized; the boosting bullet 4 tears the rubber layer of the supporting block 3 under the pressure difference of external air flow and completely exits from the engine spray pipe. The nozzle state is now a small throat state.
As shown in fig. 4, which is a schematic view of the spring plate embedded in the groove of the large throat insert, the inner wall of the nozzle body 6 is provided with a spring plate 61; the position of the elastic sheet 61 corresponds to the position of the groove on the outer wall of the large throat insert 1-1. When the station is switched to a large throat position, the elastic sheet 61 extends out of the inner wall of the nozzle body 6 and is embedded into the groove in the outer wall of the large throat insert 1-1, so that the large throat insert 1-1 is fixed and limited; the heat generated by the working of the combustion chamber 8 melts the high-temperature melting glue between the large throat insert 1-1 and the small throat insert 1-2, the large throat insert 1-1 is separated from the small throat insert 1-2, and meanwhile, the clamp ring 5 is unlocked by the clamp ring locking device 7; the small throat insert 1-2 and the snap ring 5 are pushed by the air flow to be separated from the nozzle body 6.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.
Claims (9)
1. The utility model provides a but slip throwing throat adjustable nozzle which characterized in that: the device comprises a throat liner component (1), a supporting slide rail (2), a supporting block (3), a boosting bullet (4), a snap ring (5), a nozzle body (6), a snap ring locker (7) and a combustion chamber (8); wherein the spray pipe body (6) is a hollow cylinder structure which is horizontally placed; the combustion chamber (8) is coaxially and fixedly arranged at the outlet end of the spray pipe body (6); the supporting slide rail (2) is fixedly arranged on the inner wall of the combustion chamber (8); the throat insert component (1) is arranged on a track inside the supporting slide rail (2) to realize that the throat insert component (1) horizontally moves along the axial direction of the supporting slide rail (2); the supporting block (3) is fixedly arranged on the inner side wall of the throat liner component (1); gluing the outer wall of the supporting block (3); the boosting bullet (4) extends into the spray pipe body (6) from the axial inlet end of the spray pipe body (6), and the bullet head of the boosting bullet (4) is in contact with the throat lining component (1) through the supporting block (3); the snap ring locker (7) is arranged in the inner wall of the nozzle body (6); the clamping ring (5) is fixedly arranged on the inner wall of the spray pipe body (6), and the position of the clamping ring (5) corresponds to the clamping ring locking device (7).
2. A sliding disposable throat nozzle as claimed in claim 1, wherein: the throat insert component (1) comprises a large throat insert (1-1) and a small throat insert (1-2); wherein, the small throat insert (1-2) is in a conical section structure; the large throat insert (1-1) is sleeved on the outer wall of the small throat insert (1-2); the supporting block (3) is fixedly arranged on the inner wall of the small throat insert (1-2).
3. A sliding disposable throat nozzle as claimed in claim 2, wherein: the outer wall of the large throat insert (1-1) is of a cylindrical structure; the outer wall of the large throat insert (1-1) is connected with the supporting slide rail (2) in a sliding way; the inner wall of the large throat insert (1-1) is of a double-conical surface structure; one conical surface has the same taper with the outer wall of the small throat insert (1-2), so that the inner wall of the large throat insert (1-1) is matched with the outer wall of the small throat insert (1-2) for installation; the outer wall of the large throat insert (1-1) is provided with a groove.
4. A sliding disposable throat nozzle according to claim 3 wherein: the large throat insert (1-1) and the small throat insert (1-2) are bonded through high-temperature melting glue; the outer wall of the large throat insert (1-1) is provided with a groove.
5. The sliding disposable throat nozzle of claim 4 wherein: the supporting slide rail (2) and the supporting block (3) are made of combustible hard foam materials.
6. The sliding disposable throat nozzle of claim 5 wherein: when the boosting bullet (4) is plugged into the nozzle body (6), the bullet end of the boosting bullet (4) is bonded with the supporting block (3); the boosting bullet (4) pushes the throat insert component (1) to horizontally move along the supporting slide rail (2) through the supporting block (3) until the tail end of the boosting bullet (4) is in limit fit with the axial inlet end of the nozzle body (6), and the assembly is completed.
7. The sliding disposable throat nozzle of claim 6 wherein: when the combustion chamber (8) works, the combustion chamber (8) outputs airflow to the nozzle body (6); the air flow pushes the throat insert assembly (1) and the boosting bullet (4) to move towards the axial inlet end of the nozzle body (6) along the supporting slide rail (2); until the throat insert component (1) moves to the position of the clamping ring (5); the position limitation and stop of the throat insert component (1) are realized by locking the clamping ring (5) through the clamping ring locker (7); the boosting bullet (4) tears the glue layer of the supporting block (3) under the pressure difference of external air flow and completely exits from the engine spray pipe.
8. The sliding disposable throat nozzle of claim 7 wherein: the inner wall of the spray pipe body (6) is provided with an elastic sheet (61); the position of the elastic sheet (61) corresponds to the position of the groove on the outer wall of the large throat insert (1-1).
9. A sliding disposable throat nozzle according to claim 8 wherein: when the station is switched to a large throat position, the elastic sheet (61) extends out of the inner wall of the nozzle body (6) and is embedded into the groove in the outer wall of the large throat insert (1-1) to realize the fixed limit of the large throat insert (1-1); the high-temperature melting glue between the large throat insert (1-1) and the small throat insert (1-2) is melted by the heat generated by the working of the combustion chamber (8), the large throat insert (1-1) is separated from the small throat insert (1-2), and meanwhile, the snap ring locker (7) unlocks the snap ring (5); the small throat insert (1-2) and the snap ring (5) are separated from the nozzle body (6) under the push of airflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494245.9A CN109736964B (en) | 2018-12-07 | 2018-12-07 | Sliding throwable throat adjustable spray pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811494245.9A CN109736964B (en) | 2018-12-07 | 2018-12-07 | Sliding throwable throat adjustable spray pipe |
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| Publication Number | Publication Date |
|---|---|
| CN109736964A CN109736964A (en) | 2019-05-10 |
| CN109736964B true CN109736964B (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811494245.9A Active CN109736964B (en) | 2018-12-07 | 2018-12-07 | Sliding throwable throat adjustable spray pipe |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327886A (en) * | 1972-11-30 | 1982-05-04 | The United States Of America As Represented By The Secretary Of The Navy | Integral rocket ramjet missile |
| US4364530A (en) * | 1980-09-08 | 1982-12-21 | The United States Of America As Represented By The Secretary Of The Navy | Propulsion/control modular booster |
| JPH05180077A (en) * | 1991-12-27 | 1993-07-20 | Nissan Motor Co Ltd | Nozzle structure for ram jet |
| JPH08326604A (en) * | 1995-05-31 | 1996-12-10 | Nissan Motor Co Ltd | Solid rocket engine |
| CN105129096A (en) * | 2015-07-14 | 2015-12-09 | 洛阳大智实业有限公司 | Novel dual-power tandem loitering powerplant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7328571B2 (en) * | 2004-11-29 | 2008-02-12 | United Technologies Corporation | Semi-axisymmetric scramjet flowpath with conformal nozzle |
-
2018
- 2018-12-07 CN CN201811494245.9A patent/CN109736964B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4327886A (en) * | 1972-11-30 | 1982-05-04 | The United States Of America As Represented By The Secretary Of The Navy | Integral rocket ramjet missile |
| US4364530A (en) * | 1980-09-08 | 1982-12-21 | The United States Of America As Represented By The Secretary Of The Navy | Propulsion/control modular booster |
| JPH05180077A (en) * | 1991-12-27 | 1993-07-20 | Nissan Motor Co Ltd | Nozzle structure for ram jet |
| JPH08326604A (en) * | 1995-05-31 | 1996-12-10 | Nissan Motor Co Ltd | Solid rocket engine |
| CN105129096A (en) * | 2015-07-14 | 2015-12-09 | 洛阳大智实业有限公司 | Novel dual-power tandem loitering powerplant |
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| Publication number | Publication date |
|---|---|
| CN109736964A (en) | 2019-05-10 |
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